UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                   FORM N-CSRS

                   CERTIFIED SHAREHOLDER REPORT OF REGISTERED
                         MANAGEMENT INVESTMENT COMPANIES

Investment Company Act file number 811-7356

                   Van Kampen Strategic Sector Municipal Trust
- --------------------------------------------------------------------------------

               (Exact name of registrant as specified in charter)


              1221 Avenue of the Americas, New York, New York 10020
- --------------------------------------------------------------------------------

               (Address of principal executive offices) (Zip code)


                                 Ronald Robison
              1221 Avenue of the Americas, New York, New York 10020
- --------------------------------------------------------------------------------

                     (Name and address of agent for service)

Registrant's telephone number, including area code: 212-762-4000

Date of fiscal year end: 10/31

Date of reporting period: 4/30/05




Item 1. Reports to Shareholders

The Trust's semi-annual report transmitted to shareholders pursuant to
Rule 30e-1 under the Investment Company Act of 1940 is as follows:

       Welcome, Shareholder

       In this report, you'll learn about how your investment in Van Kampen
       Strategic Sector Municipal Trust performed during the semiannual period.
       The portfolio management team will provide an overview of the market
       conditions and discuss some of the factors that affected investment
       performance during the reporting period. In addition, this report
       includes the trust's financial statements and a list of trust investments
       as of April 30, 2005.

       MARKET FORECASTS PROVIDED IN THIS REPORT MAY NOT NECESSARILY COME TO
       PASS. THERE IS NO ASSURANCE THAT THE TRUST WILL ACHIEVE ITS INVESTMENT
       OBJECTIVE. TRUSTS ARE SUBJECT TO MARKET RISK, WHICH IS THE POSSIBILITY
       THAT THE MARKET VALUES OF SECURITIES OWNED BY THE TRUST WILL DECLINE AND
       THAT THE VALUE OF TRUST SHARES MAY THEREFORE BE LESS THAN WHAT YOU PAID
       FOR THEM. ACCORDINGLY, YOU CAN LOSE MONEY INVESTING IN THIS TRUST.

       INCOME MAY SUBJECT CERTAIN INDIVIDUALS TO THE FEDERAL ALTERNATIVE MINIMUM
       TAX (AMT).

<Table>
<Caption>
                                                                    
         ---------------------------------------------------------------------------------------
            NOT FDIC INSURED             OFFER NO BANK GUARANTEE              MAY LOSE VALUE
         ---------------------------------------------------------------------------------------
                   NOT INSURED BY ANY FEDERAL GOVERNMENT AGENCY               NOT A DEPOSIT
         ---------------------------------------------------------------------------------------
</Table>


Performance Summary as of 4/30/05

<Table>
<Caption>
STRATEGIC SECTOR MUNICIPAL TRUST
SYMBOL: VKS
- ------------------------------------------------------------
AVERAGE ANNUAL                      BASED ON      BASED ON
TOTAL RETURNS                         NAV       MARKET PRICE
                                          

Since Inception (1/22/93)             7.08%         5.24%

10-year                               7.70          7.02

5-year                                9.39          9.06

1-year                               10.62          7.82

6-month                               4.10         -0.04
- ------------------------------------------------------------
</Table>

PERFORMANCE DATA QUOTED REPRESENTS PAST PERFORMANCE, WHICH IS NO GUARANTEE OF
FUTURE RESULTS, AND CURRENT PERFORMANCE MAY BE LOWER OR HIGHER THAN THE FIGURES
SHOWN. FOR THE MOST RECENT MONTH-END PERFORMANCE FIGURES, PLEASE VISIT
VANKAMPEN.COM OR SPEAK WITH YOUR FINANCIAL ADVISOR. INVESTMENT RETURNS, NET
ASSET VALUE (NAV) AND COMMON SHARE MARKET PRICE WILL FLUCTUATE AND TRUST SHARES,
WHEN SOLD, MAY BE WORTH MORE OR LESS THAN THEIR ORIGINAL COST.

NAV per share is determined by dividing the value of the trust's portfolio
securities, cash and other assets, less all liabilities, by the total number of
common shares outstanding. The common share market price is the price the market
is willing to pay for shares of the trust at a given time. Common share market
price is influenced by a range of factors, including supply and demand and
market conditions. Total return assumes an investment at the beginning of the
period, reinvestment of all distributions for the period in accordance with the
trust's dividend reinvestment plan, and sale of all shares at the end of the
period.

The Lehman Brothers Municipal Bond Index is a broad-based statistical composite
of municipal bonds. The index does not include any expenses, fees or sales
charges, which would lower performance. The index is unmanaged and should not be
considered an investment. It is not possible to invest directly in an index.

                                                                               1


Trust Report

FOR THE 6-MONTH PERIOD ENDED APRIL 30, 2005

Van Kampen Strategic Sector Municipal Trust is managed by the Adviser's
Municipal Fixed Income team.(1) Current members include Timothy D. Haney and
Robert Wimmel, Vice Presidents of the Adviser; and John Reynoldson, Executive
Director of the Adviser.

MARKET CONDITIONS

The six-month period ended April 30, 2005, was characterized by continued
short-term interest rate increases. As crude oil prices reached record highs,
the prospect of rising inflation also cast a shadow. The Federal Open Market
Committee (the "Fed") raised the federal funds target rate 100 basis points
during the period through a series of four, "measured" 0.25 percent tightenings
to 2.75 percent by the end of April. Although rates in the short and
intermediate areas of the yield curve shifted upward as the Fed tightened, long-
term interest rates fell as buyers did not seem deterred by the prospect of
rising inflation. As a result, the yield curve (the difference between short and
longer-term yields) flattened and the long end of the municipal market handily
outperformed the shorter end.

The municipal market in total posted positive returns during the period, though
it was not uniformly strong. In contrast to the strong showing by longer-term
bonds, shorter-term municipals were hampered by the Fed's tightening and turned
in a flat to slightly negative showing. Within the investment-grade segment of
the market, yield differentials between BBB-rated and AAA-rated municipal
securities were slightly wider, though BBB-rated securities still outperformed
high grades due to their higher coupons, while securities rated below investment
grade strongly outperformed as investors sought out their higher yields.

The Fed's interest rate hikes did not appear to dampen investors' appetites for
municipal bonds, as net inflows into municipal bond funds topped $290 million
during the period. The supply of new issues was modest during the closing months
of 2004 (the first two months of the period) before soaring in the opening
months of 2005 as long-term issuers rushed to bring securities to market in
anticipation of additional interest rate increases in the near term.

(1)Team members may change without notice at any time.
 2


PERFORMANCE ANALYSIS

The trust's return can be calculated based upon either the market price or the
net asset value (NAV) of its shares. NAV per share is determined by dividing the
value of the trust's portfolio securities, cash and other assets, less all
liabilities, by the total number of common shares outstanding, while market
price reflects the supply and demand for the shares. As a result, the two
returns can differ, as they did during the reporting period. On an NAV basis,
the trust outperformed its benchmark index, the Lehman Brothers Municipal Bond
Index. On a market price basis, the trust underperformed its benchmark.

TOTAL RETURNS FOR THE SIX-MONTH PERIOD ENDED APRIL 30, 2005

<Table>
<Caption>
- ----------------------------------------------------------
      BASED ON     BASED ON       LEHMAN BROTHERS
        NAV      MARKET PRICE   MUNICIPAL BOND INDEX
                                         

       4.10%        -0.04%             1.93%
- ----------------------------------------------------------
</Table>

PERFORMANCE DATA QUOTED REPRESENTS PAST PERFORMANCE, WHICH IS NO GUARANTEE OF
FUTURE RESULTS, AND CURRENT PERFORMANCE MAY BE LOWER OR HIGHER THAN THE FIGURES
SHOWN. INVESTMENT RETURN, NET ASSET VALUE AND COMMON SHARE MARKET PRICE WILL
FLUCTUATE AND TRUST SHARES, WHEN SOLD, MAY BE WORTH MORE OR LESS THAN THEIR
ORIGINAL COST. SEE PERFORMANCE SUMMARY FOR ADDITIONAL PERFORMANCE INFORMATION
AND INDEX DEFINITION.

The trust uses leverage to enhance its dividend to common shareholders. The
trust borrows money at short-term rates through the issuance of preferred
shares. The proceeds are reinvested in longer-term securities, taking advantage
of the difference between short- and longer-term rates. The Fed's policy of
raising interest rates throughout the period made the trust's borrowing activity
more expensive. These expenses, however, were more than offset by the positive
performance of the bonds held by the trust.

As part of an ongoing strategy to position the trust for continued increases in
short-term interest rates, we trimmed exposure to bonds with maturities in the
five- to 15-year range. Our strategy also included adding selectively to the
trust's holdings of bonds with longer maturities but moderate interest rate
characteristics. Finally, we kept the trust's duration (a measure of overall
interest-rate sensitivity) below that of its benchmark.

We continued to focus on relative-value trading between liquid, high-quality
securities to capture relative value opportunities identified by our analysts.
The trust's overall credit exposure remained tilted toward higher-quality
securities, with 86 percent of its exposure at the end of the period in bonds
rated AA or better. We took advantage of some compelling opportunities to add
BBB rated securities to the portfolio when our analysts identified securities
with attractive structures and yield characteristics. By the end of the period,
bonds rated BBB represented 9 percent of the portfolio, an allocation which
proved beneficial as the market favored higher-coupon securities.

                                                                               3


The trust's portfolio remained well diversified across the major sectors of the
municipal bond market. At the end of the period, the top three sectors were
general purpose, public building, and water and sewer.

There is no guarantee the security sectors mentioned will continue to perform
well or be held by the trust in the future.

 4


<Table>
<Caption>
RATINGS ALLOCATION AS OF 4/30/05
                                                             
AAA/Aaa                                                          83.1%
AA/Aa                                                             3.2
A/A                                                               1.5
BBB/Baa                                                           8.7
BB/Ba                                                             0.4
B/B                                                               1.1
Non-Rated                                                         2.0

<Caption>
TOP 5 SECTORS AS OF 4/30/05
                                                             
General Purpose                                                  24.5%
Public Building                                                  15.8
Water & Sewer                                                    10.7
Industrial Revenue                                               10.4
Wholesale Electric                                                9.0

<Caption>
SUMMARY OF INVESTMENTS BY STATE CLASSIFICATION AS OF 4/30/05
                                                             
California                                                       13.1%
New York                                                         10.5
New Jersey                                                        6.9
Washington                                                        6.9
Illinois                                                          6.8
Louisiana                                                         6.2
Texas                                                             6.1
Georgia                                                           5.3
Colorado                                                          4.2
Massachusetts                                                     3.8
South Carolina                                                    3.7
Ohio                                                              3.3
Indiana                                                           3.0
Oklahoma                                                          2.9
Alabama                                                           2.8
Michigan                                                          2.3
Mississippi                                                       2.2
Nevada                                                            2.2
Kansas                                                            1.9
North Carolina                                                    1.3
Connecticut                                                       1.3
Tennessee                                                         1.2
Pennsylvania                                                      0.9
Virginia                                                          0.7
Maryland                                                          0.4
New Mexico                                                        0.1
                                                                -----
Total Investments                                               100.0%
</Table>

Subject to change daily. Provided for informational purposes only and should not
be deemed as a recommendation to buy or sell the securities mentioned or
securities in the sectors shown above. Ratings and summary of investments by
state classification are as a percentage of total investments. Sectors are as a
percentage of long-term investments. Securities are classified by sectors that
represent broad groupings of related industries. Van Kampen is a wholly owned
subsidiary of a global securities firm which is engaged in a wide range of
financial services including, for example, securities trading and brokerage
activities, investment banking, research and analysis, financing and financial
advisory services. Rating allocations based upon ratings as issued by Standard
and Poor's and Moody's, respectively.

                                                                               5


FOR MORE INFORMATION ABOUT PORTFOLIO HOLDINGS

       Each Van Kampen trust provides a complete schedule of portfolio holdings
       in its semiannual and annual reports within 60 days of the end of the
       trust's second and fourth fiscal quarters by filing the schedule
       electronically with the Securities and Exchange Commission (SEC). The
       semiannual reports are filed on Form N-CSRS and the annual reports are
       filed on Form N-CSR. Van Kampen also delivers the semiannual and annual
       reports to trust shareholders, and makes these reports available on its
       public Web site, www.vankampen.com. In addition to the semiannual and
       annual reports that Van Kampen delivers to shareholders and makes
       available through the Van Kampen public Web site, each trust files a
       complete schedule of portfolio holdings with the SEC for the trust's
       first and third fiscal quarters on Form N-Q. Van Kampen does not deliver
       the reports for the first and third fiscal quarters to shareholders, nor
       are the reports posted to the Van Kampen public Web site. You may,
       however, obtain the Form N-Q filings (as well as the Form N-CSR and
       N-CSRS filings) by accessing the SEC's Web site, http://www.sec.gov. You
       may also review and copy them at the SEC's Public Reference Room in
       Washington, DC. Information on the operation of the SEC's Public
       Reference Room may be obtained by calling the SEC at 1-800-SEC-0330. You
       can also request copies of these materials, upon payment of a duplicating
       fee, by electronic request at the SEC's e-mail address
       (publicinfo@sec.gov) or by writing the Public Reference section of the
       SEC, Washington, DC 20549-0102.

       You may obtain copies of a trust's fiscal quarter filings by contacting
       Van Kampen Client Relations at 1-800-847-2424.

PROXY VOTING POLICIES AND PROCEDURES AND PROXY VOTING RECORD

       The trust's policies and procedures with respect to the voting of proxies
       relating to the trust's portfolio securities and information on how the
       trust voted proxies relating to portfolio securities during the most
       recent twelve-month period ended June 30 is available without charge,
       upon request, by visiting our Web site at www.vankampen.com. This
       information is also available on the Securities and Exchange Commission's
       Web site at http://www.sec.gov.

 6


VAN KAMPEN STRATEGIC SECTOR MUNICIPAL TRUST

PORTFOLIO OF INVESTMENTS -- APRIL 30, 2005 (UNAUDITED)

<Table>
<Caption>
PAR
AMOUNT
(000)     DESCRIPTION                                      COUPON    MATURITY      VALUE
- --------------------------------------------------------------------------------------------
                                                                    
          MUNICIPAL BONDS  155.6%
          ALABAMA  4.5%
$6,345    Alabama St Muni Elec Auth Pwr Supply Rev Ser A
          (MBIA Insd) (a)................................   5.500%   09/01/19   $  7,170,294
                                                                                ------------

          CALIFORNIA  20.6%
 5,000    Alameda Corridor Transn Auth CA Conv-Cap Apprec
          Sub Lien Ser A Rfdg (AMBAC Insd) (b)...........  0/5.400   10/01/24      3,676,650
 3,330    Anaheim, CA Ctf Partn Anaheim Mem Hosp Assn
          Rfdg (Escrowed to Maturity) (AMBAC Insd).......   5.000    05/15/13      3,388,508
    30    California Rural Home Mtg Fin Auth Single
          Family Mtg Rev Ser C (AMT) (GNMA
          Collateralized)................................   7.800    02/01/28         30,366
 5,110    California St (AMBAC Insd).....................   5.125    10/01/27      5,350,885
 2,000    California St (MBIA Insd)......................   5.000    02/01/32      2,074,540
 2,000    California St Dept Wtr Res Pwr Supply Rev Ser A
          (XLCA Insd)....................................   5.375    05/01/17      2,219,900
 5,000    California St Dept Wtr Res Pwr Supply Rev Ser A
          (MBIA Insd)....................................   5.375    05/01/22      5,547,750
 5,000    Foothill/Eastern Corridor Agy CA Toll Rd Rev
          Conv Cap Apprec Rfdg (b).......................  0/5.800   01/15/20      4,277,950
 2,000    Los Angeles Cnty, CA Pub Wks Fin Auth Rev Sr
          Lien Ser A Rfdg (FSA Insd).....................   5.500    10/01/18      2,294,580
 3,500    Palm Springs, CA Fin Auth Lease Rev Convention
          Ctr Proj Ser A (MBIA Insd).....................   5.500    11/01/35      3,902,185
                                                                                ------------
                                                                                  32,763,314
                                                                                ------------
          COLORADO  4.9%
 1,000    Arapahoe Cnty, CO Cap Impt Tr Fd Hwy Rev E-470
          Proj Ser B (Prerefunded @ 08/31/05)............   7.000    08/31/26      1,044,660
 5,000    Colorado Ed & Cultural Fac Charter Sch Proj
          (XLCA Insd)....................................   5.500    05/01/36      5,471,050
 1,000    Colorado Hlth Fac Auth Rev Hosp Parkview Med
          Ctr Proj.......................................   6.500    09/01/20      1,095,600
   100    Colorado Hsg Fin Auth Single Family Pgm Sr Ser
          C1 (AMT).......................................   7.550    11/01/27        101,963
                                                                                ------------
                                                                                   7,713,273
                                                                                ------------
          CONNECTICUT  2.0%
 1,500    Mashantucket Western Pequot Tribe CT Spl Rev
          Ser A, 144-A Private Placement (c).............   6.400    09/01/11      1,616,760
 1,500    Mashantucket Western Pequot Tribe CT Spl Rev
          Ser A, 144-A Private Placement (Prerefunded @
          09/01/07) (c)..................................   6.400    09/01/11      1,582,020
                                                                                ------------
                                                                                   3,198,780
                                                                                ------------
          GEORGIA  8.3%
 4,000    Augusta, GA Wtr & Swr Rev (FSA Insd) (g).......   5.250    10/01/22      4,336,600
 5,000    Augusta, GA Wtr & Swr Rev (FSA Insd)...........   5.000    10/01/27      5,232,200
</Table>

See Notes to Financial Statements                                              7


VAN KAMPEN STRATEGIC SECTOR MUNICIPAL TRUST

PORTFOLIO OF INVESTMENTS -- APRIL 30, 2005 (UNAUDITED) continued

<Table>
<Caption>
PAR
AMOUNT
(000)     DESCRIPTION                                      COUPON    MATURITY      VALUE
- --------------------------------------------------------------------------------------------
                                                                    
          GEORGIA (CONTINUED)
$1,870    Georgia Muni Elec Auth Pwr Rev Ser A (FGIC
          Insd)..........................................   5.500%   01/01/12   $  2,083,909
 1,425    Georgia Muni Elec Auth Pwr Rev Ser A Rfdg
          (Escrowed to Maturity) (FGIC Insd).............   5.500    01/01/12      1,583,260
                                                                                ------------
                                                                                  13,235,969
                                                                                ------------
          ILLINOIS  10.7%
 2,540    Chicago, IL O'Hare Intl Arpt Rev Second Lien
          Passenger Fac Ser A (AMT) (AMBAC Insd).........   5.375    01/01/32      2,659,863
 1,700    Chicago, IL O'Hare Intl Arpt Spl Fac Rev United
          Airl Proj Ser B Rfdg (AMT) (d) (e).............   5.200    04/01/11        291,380
 5,000    Chicago, IL Proj Ser A Rfdg (MBIA Insd)........   5.500    01/01/38      5,456,800
   950    Chicago, IL Tax Increment Alloc Sub Cent Loop
          Redev Ser A (ACA Insd).........................   6.500    12/01/08      1,043,185
 1,500    Cook Cnty, IL Sch Dist No. 100 Berwyn South
          (FSA Insd) (Escrowed to Maturity)..............   8.100    12/01/15      2,060,610
 5,000    Cook Cnty, IL Ser A (FGIC Insd)................   5.500    11/15/31      5,435,400
                                                                                ------------
                                                                                  16,947,238
                                                                                ------------
          INDIANA  4.7%
 3,065    Allen Cnty, IN War Mem Coliseum Additions Bldg
          Corp Ser A (AMBAC Insd)........................   5.750    11/01/25      3,430,624
 3,505    East Chicago, IN Elem Sch Bldg Corp First Mtg
          Rfdg (AMBAC Insd)..............................   6.250    01/05/16      4,115,185
                                                                                ------------
                                                                                   7,545,809
                                                                                ------------
          KANSAS  3.1%
 1,000    Overland Pk, KS Dev Corp Rev First Tier
          Overland Pk Ser A..............................   7.375    01/01/32      1,095,960
 3,500    Wamego, KS Pollutn Ctl Rev KS Gas & Elec Co
          Proj Rfdg (MBIA Insd)..........................   5.300    06/01/31      3,764,425
                                                                                ------------
                                                                                   4,860,385
                                                                                ------------
          LOUISIANA  9.7%
 7,930    Ernest N Morial New Orleans, LA Exhibit Hall
          Auth Spl Tax Sr Sub Ser A (AMBAC Insd) (a).....   5.250    07/15/18      8,734,102
 2,855    Louisiana St Gas & Fuels Tax Rev Ser A (AMBAC
          Insd)..........................................   5.375    06/01/16      3,153,519
 2,000    New Orleans, LA Rfdg (FGIC Insd)...............   5.500    12/01/21      2,341,140
 1,250    Saint Charles Parish, LA Pollutn Ctl Rev LA Pwr
          & Lt Co Proj (AMT) (FSA Insd)..................   7.500    06/01/21      1,256,412
                                                                                ------------
                                                                                  15,485,173
                                                                                ------------
          MARYLAND  0.7%
 1,000    Maryland St Econ Dev Corp Univ MD College Pk
          Proj...........................................   5.625    06/01/35      1,037,010
                                                                                ------------
</Table>

 8                                             See Notes to Financial Statements


VAN KAMPEN STRATEGIC SECTOR MUNICIPAL TRUST

PORTFOLIO OF INVESTMENTS -- APRIL 30, 2005 (UNAUDITED) continued

<Table>
<Caption>
PAR
AMOUNT
(000)     DESCRIPTION                                      COUPON    MATURITY      VALUE
- --------------------------------------------------------------------------------------------
                                                                    
          MASSACHUSETTS  6.0%
$2,000    Massachusetts St Dev Fin Agy Semass Sys Ser A
          (MBIA Insd)....................................   5.625%   01/01/15   $  2,205,760
 1,705    Massachusetts St Hlth & Ed Fac Auth Rev Vly
          Regl Hlth Sys Ser C (Connie Lee Insd) (a)......   7.000    07/01/09      1,946,411
 5,000    Massachusetts St Wtr Pollutn Abatement Tr Pool
          Pgm Bds Ser 10.................................   5.000    08/01/21      5,381,300
                                                                                ------------
                                                                                   9,533,471
                                                                                ------------
          MICHIGAN  3.6%
 1,000    Kent Hosp Fin Auth MI Rev Met Hosp Proj Ser
          A..............................................   5.250    07/01/30      1,007,770
 4,500    Michigan St Bldg Auth Rev Fac Proj Ser III Rfdg
          (FSA Insd).....................................   5.000    10/15/26      4,699,755
                                                                                ------------
                                                                                   5,707,525
                                                                                ------------
          MISSISSIPPI  3.6%
 2,000    Mississippi Business Fin Corp Sys Energy Res
          Inc Proj.......................................   5.875    04/01/22      2,025,100
 2,560    Mississippi Dev Bk Spl Oblig Cap Proj & Equip
          Acquisition Ser A2 (AMBAC Insd)................   5.000    07/01/24      2,797,517
   490    Mississippi Home Corp Single Family Rev Mtg Ser
          C (AMT) (GNMA Collateralized)..................   7.600    06/01/29        504,034
   185    Mississippi Home Corp Single Family Rev Mtg Ser
          F (AMT) (GNMA Collateralized)..................   7.550    12/01/27        191,077
   147    Mississippi Home Corp Single Family Rev Ser D
          (AMT) (GNMA Collateralized)....................   8.100    12/01/24        147,666
                                                                                ------------
                                                                                   5,665,394
                                                                                ------------
          NEVADA  3.4%
 5,165    Clark Cnty, NV Bd Bk (MBIA Insd)...............   5.000    06/01/32      5,359,204
   115    Nevada Hsg Div Single Family Pgm Mezz Ser E
          (AMT) (FHA/VA Gtd).............................   6.900    10/01/11        116,308
                                                                                ------------
                                                                                   5,475,512
                                                                                ------------
          NEW JERSEY  10.8%
 5,000    Essex Cnty, NJ Impt Auth Rev Cnty Gtd Proj
          Consldtn Rfdg (MBIA Insd)......................   5.125    10/01/19      5,443,950
   700    New Jersey Econ Dev Auth Rev Cigarette Tax.....   5.750    06/15/29        751,044
 2,000    New Jersey Econ Dev Auth Spl Fac Rev
          Continental Airl Inc Proj (AMT)................   6.250    09/15/29      1,623,280
 2,500    New Jersey Econ Dev Auth Wtr Fac Rev NJ Amern
          Wtr Co Inc Proj Ser A (AMT) (FGIC Insd)........   6.875    11/01/34      2,558,050
 6,500    New Jersey Econ Dev Auth Wtr Fac Rev NJ Amern
          Wtr Co Ser A (AMT) (AMBAC Insd)................   5.250    11/01/32      6,844,630
                                                                                ------------
                                                                                  17,220,954
                                                                                ------------
          NEW YORK  16.6%
   970    New York City Indl Dev Agy Civic Fac Rev Touro
          College Proj Ser A (Acquired 06/29/1999, Cost
          $970,000) (f)..................................   6.350    06/01/29      1,000,303
     5    New York City Ser C............................   7.250    08/15/24          5,016
 2,000    New York City Ser G (Prerefunded @ 02/01/06)...   5.750    02/01/14      2,076,240
 5,000    New York City Ser H (MBIA Insd)................   5.250    03/15/14      5,520,300
</Table>

See Notes to Financial Statements                                              9


VAN KAMPEN STRATEGIC SECTOR MUNICIPAL TRUST

PORTFOLIO OF INVESTMENTS -- APRIL 30, 2005 (UNAUDITED) continued

<Table>
<Caption>
PAR
AMOUNT
(000)     DESCRIPTION                                      COUPON    MATURITY      VALUE
- --------------------------------------------------------------------------------------------
                                                                    
          NEW YORK (CONTINUED)
$5,000    New York City Transitional Fin Auth Future Tax
          Sec Ser B......................................   5.000%   08/01/22   $  5,299,600
 4,000    New York City Transitional Fin Auth Future Tax
          Sec Ser D (MBIA Insd)..........................   5.250    02/01/20      4,386,200
 7,500    Sales Tax Asset Rec Ser A (MBIA Insd)..........   5.000    10/15/22      8,076,675
                                                                                ------------
                                                                                  26,364,334
                                                                                ------------
          NORTH CAROLINA  2.1%
 3,000    Charlotte, NC Ctf Part Convention Fac Proj Ser
          A Rfdg.........................................   5.500    08/01/19      3,333,840
                                                                                ------------

          OHIO  5.2%
   385    Akron, OH Ctf Part Akron Muni Baseball Stad
          Proj...........................................   6.500    12/01/07        409,686
 1,000    Cuyahoga Cnty, OH Hosp Fac Rev Canton Inc
          Proj...........................................   7.500    01/01/30      1,124,720
 1,000    Delaware Cnty, OH Hlthcare Fac Rev Mtg Centrum
          at Willow Brook (FHA Gtd) (g)..................   6.550    02/01/35      1,026,170
 1,065    Logan Cnty, OH (MBIA Insd).....................   5.250    12/01/17      1,172,948
 2,045    Marion Cnty, OH Hosp Impt Rev Cmnty Hosp Rfdg
          (a)............................................   6.000    05/15/05      2,046,984
   275    Miami Cnty, OH Hosp Fac Impt Upper Vly Med Ctr
          Ser C Rfdg.....................................   6.000    05/15/06        282,815
 1,195    Ohio Hsg Fin Agy Mtg Rev Residential Ser A-1
          (AMT) (GNMA Collateralized)....................   6.050    09/01/17      1,247,437
   815    Toledo Lucas Cnty, OH Port Auth Northwest OH Bd
          Fd Ser C (AMT).................................   6.000    05/15/11        876,598
                                                                                ------------
                                                                                   8,187,358
                                                                                ------------
          OKLAHOMA  4.6%
 3,905    Jenks, OK Aquarium Auth Rev Rfdg (MBIA Insd)...   5.250    07/01/29      4,243,993
 1,475    Jenks, OK Aquarium Auth Rev Rfdg (MBIA Insd)...   5.250    07/01/33      1,599,520
 1,000    Mc Alester, OK Pub Wks Auth Util Sys Rev Cap
          Apprec (FSA Insd)..............................    *       02/01/31        283,970
 1,000    Tulsa Cnty, OK Pub Fac Auth Cap Impt Rev (AMBAC
          Insd)..........................................   6.250    11/01/22      1,140,730
                                                                                ------------
                                                                                   7,268,213
                                                                                ------------
          PENNSYLVANIA  1.3%
 2,000    Philadelphia, PA Hosp & Higher Ed Fac Auth Hosp
          Rev PA Hosp Rfdg (Escrowed to Maturity)........   6.350    07/01/07      2,134,340
                                                                                ------------

          SOUTH CAROLINA  5.9%
 2,420    Beaufort Cnty, SC Tax Increment New Riv Redev
          Proj Area (MBIA Insd) (a)......................   5.500    06/01/20      2,685,571
 3,000    Medical Univ SC Hosp Auth Fac FHA Insd Mtg Ser
          A Rfdg (MBIA Insd).............................   5.250    08/15/24      3,242,550
 3,365    University SC Univ Revs Ser A (AMBAC Insd).....   5.000    05/01/34      3,512,690
                                                                                ------------
                                                                                   9,440,811
                                                                                ------------
</Table>

 10                                            See Notes to Financial Statements


VAN KAMPEN STRATEGIC SECTOR MUNICIPAL TRUST

PORTFOLIO OF INVESTMENTS -- APRIL 30, 2005 (UNAUDITED) continued

<Table>
<Caption>
PAR
AMOUNT
(000)     DESCRIPTION                                      COUPON    MATURITY      VALUE
- --------------------------------------------------------------------------------------------
                                                                    
          TENNESSEE  1.9%
$1,500    Elizabethton, TN Hlth & Ed Fac Brd Rev Hosp
          First Mtg Ser B Impt & Rfdg....................   8.000%   07/01/33   $  1,788,255
 1,000    Johnson City, TN Hlth & Ed Fac Brd Hosp Rev
          First Mtg MTN Sta Hlth Ser A Rfdg (MBIA
          Insd)..........................................   7.500    07/01/25      1,258,270
                                                                                ------------
                                                                                   3,046,525
                                                                                ------------
          TEXAS  9.6%
 1,190    Brazos Riv Auth TX Pollutn Ctl Rev Adj TXU Elec
          Co Proj Ser C Rfdg (AMT).......................   5.750    05/01/36      1,292,352
 3,000    Dallas, TX Wtrwks & Swr Sys Rev Impt & Rfdg
          (FSA Insd).....................................   5.375    10/01/19      3,305,430
 1,500    Houston, TX Arpt Sys Rev Spl Fac Continental
          Airl Ser B (AMT)...............................   6.125    07/15/17      1,270,680
 3,720    Houston, TX Util Sys Rev First Lien Ser A Rfdg
          (FSA Insd).....................................   5.250    05/15/21      4,032,592
 1,250    Matagorda Cnty, TX Navig Dist No 1 Rev Coll
          Centerpoint Energy Proj Rfdg...................   5.600    03/01/27      1,304,375
 4,000    Wylie, TX Indpt Sch Dist Rfdg (PSF Gtd)........   5.000    08/15/30      4,125,360
                                                                                ------------
                                                                                  15,330,789
                                                                                ------------
          VIRGINIA  1.0%
 1,485    Richmond, VA Indl Dev Auth Govt Fac Rev Bds
          (AMBAC Insd) (a)...............................   5.000    07/15/15      1,644,385
                                                                                ------------

          WASHINGTON  10.8%
 1,000    Grant Cnty, WA Pub Util Dist No 002 Wanapum
          Hydro Elec Rev Ser B Rfdg (AMT) (MBIA Insd)....   5.375    01/01/18      1,064,780
 3,465    Seattle, WA Drain & Wastewater Rev Rfdg (FGIC
          Insd) (a)......................................   5.250    07/01/21      3,755,021
 5,000    Spokane, WA Pub Fac Dist Hotel Motel & Sales
          Use Tax (MBIA Insd)............................   5.250    09/01/33      5,327,550
 2,030    Washington St Pub Pwr Supply Sys Nuclear Proj
          No 3 Rev Ser C Rfdg (MBIA Insd)................    *       07/01/13      1,458,149
 3,380    Washington St Pub Pwr Supply Sys Nuclear Proj
          No 3 Rev Ser C Rfdg (MBIA Insd)................    *       07/01/15      2,181,756
 3,000    Washington St Ser B............................   5.500    05/01/18      3,389,040
                                                                                ------------
                                                                                  17,176,296
                                                                                ------------

TOTAL LONG-TERM INVESTMENTS 155.6%
  (Cost $236,121,674)........................................................   $247,486,992
SHORT-TERM INVESTMENTS  1.8%
  (Cost $2,900,000)..........................................................      2,900,000
                                                                                ------------

TOTAL INVESTMENTS 157.4%
  (Cost $239,021,674)........................................................    250,386,992
</Table>

See Notes to Financial Statements                                             11


VAN KAMPEN STRATEGIC SECTOR MUNICIPAL TRUST

PORTFOLIO OF INVESTMENTS -- APRIL 30, 2005 (UNAUDITED) continued

<Table>
<Caption>

DESCRIPTION                                                                            VALUE
- ------------------------------------------------------------------------------------------------
                                                                        
OTHER ASSETS IN EXCESS OF LIABILITIES  2.4%......................................   $  3,783,400
PREFERRED SHARES (INCLUDING ACCRUED DISTRIBUTIONS)  (59.8%)......................    (95,130,959)
                                                                                    ------------

NET ASSETS APPLICABLE TO COMMON SHARES  100.0%...................................   $159,039,433
                                                                                    ============
</Table>

Percentages are calculated as a percentage of net assets applicable to common
shares.

*   Zero coupon bond

(a) The Trust owns 100% of the bond issuance.

(b) Security is a "step-up" bond where the coupon increases or steps up at a
    predetermined date.

(c) 144A securities are those which are exempt from registration under Rule 144A
    of the Securities Act of 1933, as amended. These securities may only be
    resold in transactions exempt from registration which are normally those
    transactions with qualified institutional buyers.

(d) Issuer has filed for protection in federal bankruptcy court.

(e) Non-income producing security.

(f) These securities are restricted and may be resold only in transactions
    exempt from registration which are normally those transactions with
    qualified institutional buyers. Restricted securities comprise 0.62% of net
    assets applicable to common shares.

(g) All or a portion of these securities have been physically segregated in
    connection with open futures contracts.

ACA--American Capital Access

AMBAC--AMBAC Indemnity Corp.

AMT--Alternative Minimum Tax

Connie Lee--Connie Lee Insurance Co.

FGIC--Financial Guaranty Insurance Co.

FHA--Federal Housing Administration

FHA/VA--Federal Housing Administration/Department of Veterans Affairs

FSA--Financial Security Assurance Inc.

GNMA--Government National Mortgage Association

MBIA--Municipal Bond Investors Assurance Corp.

PSF--Public School Fund

XLCA--XL Capital Assurance Inc.

 12                                            See Notes to Financial Statements


VAN KAMPEN STRATEGIC SECTOR MUNICIPAL TRUST

FINANCIAL STATEMENTS

Statement of Assets and Liabilities
April 30, 2005 (Unaudited)

<Table>
                                                           
ASSETS:
Total Investments (Cost $239,021,674).......................  $250,386,992
Cash........................................................        15,445
Receivables:
  Interest..................................................     3,702,515
  Investments Sold..........................................     1,673,891
  Variation Margin on Futures...............................       122,750
Other.......................................................           531
                                                              ------------
    Total Assets............................................   255,902,124
                                                              ------------
LIABILITIES:
Payables:
  Investments Purchased.....................................     1,271,637
  Investment Advisory Fee...................................       114,074
  Income Distributions--Common Shares.......................        31,732
  Other Affiliates..........................................        10,513
Trustees' Deferred Compensation and Retirement Plans........       251,251
Accrued Expenses............................................        52,525
                                                              ------------
    Total Liabilities.......................................     1,731,732
Preferred Shares (including accrued distributions)..........    95,130,959
                                                              ------------
NET ASSETS APPLICABLE TO COMMON SHARES......................  $159,039,433
                                                              ============
NET ASSET VALUE PER COMMON SHARE ($159,039,433 divided by
  10,806,700 shares outstanding)............................  $      14.72
                                                              ============
NET ASSETS CONSIST OF:
Common Shares ($.01 par value with an unlimited number of
  shares authorized, 10,806,700 shares issued and
  outstanding)..............................................  $    108,067
Paid in Surplus.............................................   146,198,336
Net Unrealized Appreciation.................................    11,079,495
Accumulated Undistributed Net Investment Income.............     1,611,861
Accumulated Net Realized Gain...............................        41,674
                                                              ------------
NET ASSETS APPLICABLE TO COMMON SHARES......................  $159,039,433
                                                              ============
PREFERRED SHARES ($.01 par value, authorized 100,000,000
  shares, 3,800 issued with liquidation preference of
  $25,000 per share)........................................  $ 95,000,000
                                                              ============
NET ASSETS INCLUDING PREFERRED SHARES.......................  $254,039,433
                                                              ============
</Table>

See Notes to Financial Statements                                             13


VAN KAMPEN STRATEGIC SECTOR MUNICIPAL TRUST

FINANCIAL STATEMENTS continued

Statement of Operations
For the Six Months Ended April 30, 2005 (Unaudited)

<Table>
                                                           
INVESTMENT INCOME:
Interest....................................................  $ 6,088,965
                                                              -----------
EXPENSES:
Investment Advisory Fee.....................................      690,437
Preferred Share Maintenance.................................      132,645
Trustees' Fees and Related Expenses.........................       22,729
Legal.......................................................       19,955
Custody.....................................................        8,608
Other.......................................................       78,280
                                                              -----------
    Total Expenses..........................................      952,654
                                                              -----------
NET INVESTMENT INCOME.......................................  $ 5,136,311
                                                              ===========
REALIZED AND UNREALIZED GAIN/LOSS:
Realized Gain/Loss:
  Investments...............................................  $   516,321
  Futures...................................................      723,699
                                                              -----------
Net Realized Gain...........................................    1,240,020
                                                              -----------
Unrealized Appreciation/Depreciation:
  Beginning of the Period...................................   10,914,661
                                                              ===========
  End of the Period:
    Investments.............................................   11,365,318
    Futures.................................................     (285,823)
                                                              -----------
                                                               11,079,495
                                                              -----------
Net Unrealized Appreciation During the Period...............      164,834
                                                              -----------
NET REALIZED AND UNREALIZED GAIN............................  $ 1,404,854
                                                              ===========
DISTRIBUTIONS TO PREFERRED SHAREHOLDERS.....................  $  (843,713)
                                                              ===========
NET INCREASE IN NET ASSETS APPLICABLE TO COMMON SHARES FROM
  OPERATIONS................................................  $ 5,697,452
                                                              ===========
</Table>

 14                                            See Notes to Financial Statements


VAN KAMPEN STRATEGIC SECTOR MUNICIPAL TRUST

FINANCIAL STATEMENTS continued

Statements of Changes in Net Assets (Unaudited)

<Table>
<Caption>
                                                              FOR THE             FOR THE
                                                          SIX MONTHS ENDED       YEAR ENDED
                                                           APRIL 30, 2005     OCTOBER 31, 2004
                                                          ------------------------------------
                                                                        
FROM INVESTMENT ACTIVITIES:
Operations:
Net Investment Income...................................    $  5,136,311        $ 10,110,813
Net Realized Gain.......................................       1,240,020             449,909
Net Unrealized Appreciation During the Period...........         164,834           1,566,217
Distributions to Preferred Shareholders:
  Net Investment Income.................................        (843,713)         (1,087,402)
                                                            ------------        ------------
Change in Net Assets Applicable to Common Shares from
  Operations............................................       5,697,452          11,039,537

Distributions to Common Shareholders:
  Net Investment Income.................................      (4,441,061)         (9,811,477)
                                                            ------------        ------------

NET CHANGE IN NET ASSETS APPLICABLE TO COMMON SHARES
  FROM INVESTMENT ACTIVITIES............................       1,256,391           1,228,060

NET ASSETS APPLICABLE TO COMMON SHARES:
Beginning of the Period.................................     157,783,042         156,554,982
                                                            ------------        ------------
End of the Period (Including accumulated undistributed
  net investment income of $1,611,861 and $1,760,324,
  respectively).........................................    $159,039,433        $157,783,042
                                                            ============        ============
</Table>

See Notes to Financial Statements                                             15


VAN KAMPEN STRATEGIC SECTOR MUNICIPAL TRUST

FINANCIAL HIGHLIGHTS (UNAUDITED)

THE FOLLOWING SCHEDULE PRESENTS FINANCIAL HIGHLIGHTS FOR ONE COMMON SHARE OF THE
TRUST OUTSTANDING THROUGHOUT THE PERIODS INDICATED.

<Table>
<Caption>
                                                            SIX MONTHS
                                                              ENDED
                                                            APRIL 30,     ------------------
                                                               2005        2004       2003
                                                            --------------------------------
                                                                            
NET ASSET VALUE, BEGINNING OF THE PERIOD...................  $ 14.60      $ 14.49    $ 14.44
                                                             -------      -------    -------
  Net Investment Income....................................      .48          .93       1.03
  Net Realized and Unrealized Gain/Loss....................      .13          .19        .10
  Common Share Equivalent of Distributions Paid to
    Preferred Shareholders:
      Net Investment Income................................     (.08)        (.10)      (.09)
                                                             -------      -------    -------
Total from Investment Operations...........................      .53         1.02       1.04
  Distributions Paid to Common Shareholders:
      Net Investment Income................................     (.41)        (.91)      (.99)
                                                             -------      -------    -------
NET ASSET VALUE, END OF THE PERIOD.........................  $ 14.72      $ 14.60    $ 14.49
                                                             =======      =======    =======

Common Share Market Price at End of the Period.............  $ 12.72      $ 13.14    $ 14.10
Total Return (b)...........................................   -0.04%*      -0.36%     10.82%
Net Assets Applicable to Common Shares at End of the Period
  (In millions)............................................  $ 159.0      $ 157.8    $ 156.6
Ratio of Expenses to Average Net Assets Applicable to
  Common Shares (c)........................................    1.21%        1.46%      1.56%
Ratio of Net Investment Income to Average Net Assets
  Applicable to Common Shares (c)..........................    6.55%        6.46%      7.09%
Portfolio Turnover.........................................      12%*         40%        33%

SUPPLEMENTAL RATIOS:
Ratio of Expenses to Average Net Assets Including Preferred
  Shares (c)...............................................     .76%         .91%       .97%
Ratio of Net Investment Income to Average Net Assets
  Applicable to Common Shares (d)..........................    5.47%        5.76%      6.44%

SENIOR SECURITIES:
Total Preferred Shares Outstanding.........................    3,800        3,800      3,800
Asset Coverage Per Preferred Share (e).....................  $66,887      $66,532    $66,202
Involuntary Liquidating Preference Per Preferred Share.....  $25,000      $25,000    $25,000
Average Market Value Per Preferred Share...................  $25,000      $25,000    $25,000
</Table>

*  Non-Annualized

(a)As required, effective November 1, 2001, the Trust has adopted the provisions
   of the AICPA Audit and Accounting Guide for Investment companies and began
   accreting market discount on fixed income securities. The effect of this
   change for the year ended October 31, 2002 was to increase net investment
   income per share by $.03, decrease net realized and unrealized gains and
   losses per share by $.03 and increase the ratio of net investment income to
   average net assets applicable to common shares by .19%. Per share, ratios and
   supplemental data for periods prior to October 31, 2002 have not been
   restated to reflect this change in presentation.

(b)Total return assumes an investment at the common share market price at the
   beginning of the period indicated, reinvestment of all distributions for the
   period in accordance with the Trust's dividend reinvestment plan, and sale of
   all shares at the closing common share market price at the end of the period
   indicated.

(c)Ratios do not reflect the effect of dividend payments to preferred
   shareholders.

(d)Ratios reflect the effect of dividend payments to preferred shareholders.

(e)Calculated by subtracting the Trust's total liabilities (not including the
   preferred shares) from the Trust's total assets and dividing this by the
   number of preferred shares outstanding.

 16


<Table>
<Caption>

YEAR ENDED OCTOBER 31,
- ---------------------------------------------------------------------------------------
     2002 (a)    2001      2000      1999       1998       1997       1996       1995
- ---------------------------------------------------------------------------------------
                                                       
     $ 14.75    $ 13.70   $ 13.14   $ 14.82   $  14.35   $  13.67   $  13.72   $  12.28
     -------    -------   -------   -------   --------   --------   --------   --------
        1.09       1.10      1.07      1.07       1.09       1.10       1.12       1.15
        (.33)       .94       .61     (1.69)       .47        .67       (.07)      1.51
        (.12)      (.28)     (.36)     (.28)      (.31)      (.31)      (.31)      (.34)
     -------    -------   -------   -------   --------   --------   --------   --------
         .64       1.76      1.32      (.90)      1.25       1.46        .74       2.32
        (.95)      (.71)     (.76)     (.78)      (.78)      (.78)      (.79)      (.88)
     -------    -------   -------   -------   --------   --------   --------   --------
     $ 14.44    $ 14.75   $ 13.70   $ 13.14   $  14.82   $  14.35   $  13.67   $  13.72
     =======    =======   =======   =======   ========   ========   ========   ========

     $ 13.66    $ 13.28   $11.250   $11.625   $14.5625   $ 12.750   $ 11.750   $ 11.875
      10.14%     24.99%     3.37%   -15.30%     20.97%     15.55%      5.69%     18.79%
     $ 156.0    $ 159.4   $ 148.0   $ 142.0   $  160.2   $  155.1   $  147.7   $  148.3
       1.54%      1.55%     1.66%     1.64%      1.62%      1.65%      1.67%      1.77%
       7.51%      7.77%     8.07%     7.47%      7.47%      7.89%      8.23%      8.74%
         33%        44%       22%       39%        18%        23%        24%        75%

        .95%       .96%     1.00%     1.01%      1.01%      1.01%      1.01%      1.06%
       6.65%      5.79%     5.38%     5.50%      5.35%      5.67%      5.91%      6.14%

       3,800      3,800     3,800     3,800      1,900      1,900      1,900      1,900
     $66,065    $66,948   $63,958   $62,357   $134,297   $131,631   $127,743   $128,047
     $25,000    $25,000   $25,000   $25,000   $ 50,000   $ 50,000   $ 50,000   $ 50,000
     $25,000    $25,000   $25,000   $25,000   $ 50,000   $ 50,000   $ 50,000   $ 50,000
</Table>

See Notes to Financial Statements                                             17


VAN KAMPEN STRATEGIC SECTOR MUNICIPAL TRUST

NOTES TO FINANCIAL STATEMENTS -- APRIL 30, 2005 (UNAUDITED)

1. SIGNIFICANT ACCOUNTING POLICIES

Van Kampen Strategic Sector Municipal Trust (the "Trust") is registered as a
non-diversified, closed-end management investment company under the Investment
Company Act of 1940 (the "1940 Act"), as amended. The Trust's investment
objective is to seek to provide a high level of current income exempt from
federal income tax, consistent with preservation of capital. The Trust will
invest in a portfolio consisting substantially of municipal obligations from
those market sectors which the Adviser feels will best meet the Trust's
investment objective. The Trust commenced investment operations on January 22,
1993.

    The following is a summary of significant accounting policies consistently
followed by the Trust in the preparation of its financial statements. The
preparation of financial statements in conformity with accounting principles
generally accepted in the United States of America requires management to make
estimates and assumptions that affect the reported amounts of assets and
liabilities and disclosure of contingent assets and liabilities at the date of
the financial statements and the reported amounts of revenues and expenses
during the reporting period. Actual results could differ from those estimates.

A. SECURITY VALUATION Municipal bonds are valued by independent pricing services
or dealers using the mean of the bid and asked prices or, in the absence of
market quotations, at fair value based upon yield data relating to municipal
bonds with similar characteristics and general market conditions. Securities
which are not valued by independent pricing services or dealers are valued at
fair value using procedures established in good faith by the Board of Trustees.
Futures contracts are valued at the settlement price established each day on the
exchange on which they are traded. Short-term securities with remaining
maturities of 60 days or less are valued at amortized cost, which approximates
market value.

B. SECURITY TRANSACTIONS Security transactions are recorded on a trade date
basis. Realized gains and losses are determined on an identified cost basis. The
Trust may purchase and sell securities on a "when-issued" or "delayed delivery"
basis with settlement to occur at a later date. The value of the security so
purchased is subject to market fluctuations during this period. The Trust will
segregate assets with the custodian having an aggregate value at least equal to
the amount of the when-issued or delayed delivery purchase commitments until
payment is made. At April 30, 2005, there were no when-issued or delayed
delivery purchase commitments.

C. INVESTMENT INCOME Interest income is recorded on an accrual basis. Bond
premium is amortized and discount is accreted over the expected life of each
applicable security.

D. FEDERAL INCOME TAXES It is the Trust's policy to comply with the requirements
of Subchapter M of the Internal Revenue Code applicable to regulated investment
companies and to distribute substantially all of its taxable income to its
shareholders. Therefore, no provision for federal income taxes is required.

    The Trust intends to utilize provisions of the federal income tax laws which
allow it to carry a realized capital loss forward for eight years following the
year of the loss and offset such losses against any future realized capital
gains. At October 31, 2004, the Trust had an

 18


VAN KAMPEN STRATEGIC SECTOR MUNICIPAL TRUST

NOTES TO FINANCIAL STATEMENTS -- APRIL 30, 2005 (UNAUDITED) continued

accumulated capital loss carryforward for tax purposes of $1,662,493, which will
expire according to the following schedule.

<Table>
<Caption>
AMOUNT                                                           EXPIRATION
                                                           
$1,185,305..................................................  October 31, 2007
$477,188....................................................  October 31, 2008
</Table>

    At April 30, 2005, the cost and related gross unrealized appreciation and
depreciation are as follows:

<Table>
                                                           
Cost of investments for tax purposes........................  $238,471,045
                                                              ============
Gross tax unrealized appreciation...........................  $ 13,862,236
Gross tax unrealized depreciation...........................    (1,946,289)
                                                              ------------
Net tax unrealized appreciation on investments..............  $ 11,915,947
                                                              ============
</Table>

E. DISTRIBUTION OF INCOME AND GAINS The Trust declares and pays monthly
dividends from net investment income to common shareholders. Net realized gains,
if any, are distributed annually on a pro rata basis to common and preferred
shareholders. Distributions from net realized gains for book purposes may
include short-term capital gains and a portion of futures gains, which are
included as ordinary income for tax purposes.

    The tax character of distributions paid during the year ended October 31,
2004 was as follows:

<Table>
                                                           
Distribution paid from:
  Ordinary Income...........................................  $909,785
  Long-Term Capital Gain....................................       -0-
                                                              --------
                                                              $909,785
                                                              ========
</Table>

    As of October 31, 2004, the components of distributable earnings on a tax
basis were as follows:

<Table>
                                                           
Undistributed ordinary income...............................  $556,810
</Table>

2. INVESTMENT ADVISORY AGREEMENT AND OTHER TRANSACTIONS WITH AFFILIATES

Under the terms of the Trust's Investment Advisory Agreement, Van Kampen Asset
Management (the "Adviser") provides investment advice and facilities to the
Trust for an annual fee payable monthly of .55% of the average daily net assets
of the Trust. Effective November 1, 2004, the investment advisory fee was
reduced from .60% to .55%.

    For the six months ended April 30, 2005, the Trust recognized expenses of
approximately $7,400 representing legal services provided by Skadden, Arps,
Slate, Meagher & Flom (Illinois), counsel to the Trust, of which a trustee of
the Trust is a partner of such firm and he and his law firm provide legal
services as legal counsel to the Trust.

    Under separate Accounting Services and Legal Services agreements, the
Adviser provides accounting and legal services to the Trust. The Adviser
allocates the cost of such services to each trust. For the six months ended
April 30, 2005, the Trust recognized expenses of

                                                                              19


VAN KAMPEN STRATEGIC SECTOR MUNICIPAL TRUST

NOTES TO FINANCIAL STATEMENTS -- APRIL 30, 2005 (UNAUDITED) continued

approximately $19,300 representing Van Kampen Investments Inc.'s or its
affiliates (collectively "Van Kampen") cost of providing accounting and legal
services to the Trust, which are reported as part of "Other" and "Legal"
expenses, respectively, in the Statement of Operations.

    Certain officers and trustees of the Trust are also officers and directors
of Van Kampen. The Trust does not compensate its officers or trustees who are
also officers of Van Kampen.

    The Trust provides deferred compensation and retirement plans for its
trustees who are not officers of Van Kampen. Under the deferred compensation
plan, trustees may elect to defer all or a portion of their compensation to a
later date. Benefits under the retirement plan are payable upon retirement for a
ten-year period and are based upon each trustee's years of service to the Trust.
The maximum annual benefit per trustee under the plan is $2,500.

3. INVESTMENT TRANSACTIONS

During the period, the cost of purchases and proceeds from sales of investments,
excluding short-term investments, were $32,247,584 and $29,119,001,
respectively.

4. DERIVATIVE FINANCIAL INSTRUMENTS

A derivative financial instrument in very general terms refers to a security
whose value is "derived" from the value of an underlying asset, reference rate
or index.

    The Trust may invest up to 15% of its net assets in "inverse floating rate
obligations." The inverse floating rate obligations in which the Trust may
invest are typically created through a division of a fixed-rate municipal
obligation into two separate instruments, a short-term obligation and a
long-term obligation. The interest rate on the short-term obligation is set at
periodic auctions. The interest rate on the long-term obligation which the Trust
may purchase is the rate the issuer would have paid on the fixed-income
obligation, (i) plus the difference between such fixed rate and the rate on the
short-term obligation, if the short-term rate is lower than the fixed rate; or
(ii) minus such difference if the interest rate on the short-term obligation is
higher than the fixed rate. These securities have varying degrees of liquidity
and the market value of such securities generally will fluctuate in response to
changes in market rates of interest to a greater extent than the value of an
equal principal amount of a fixed rate security having similar credit quality,
redemption provisions and maturity. These securities tend to underperform the
market for fixed rate bonds in a rising interest rate environment, but tend to
outperform the market for fixed rate bonds when interest rates decline or remain
relatively stable. Although volatile, inverse floating rate obligations
typically offer the potential for yields exceeding the yields available on fixed
rate bonds with comparable credit quality, coupon, call provisions and maturity.
These securities usually permit the investor to convert the floating rate
security counterpart to a fixed rate (normally adjusted downward), and this
optional conversion feature may provide a partial hedge against rising rates if
exercised at an opportune time.

    In order to seek to manage the interest rate exposure of the Trust's
portfolio in a changing interest rate environment, the Trust may purchase or
sell financial futures contracts or engage in transactions involving interest
rate swaps, caps, floors or collars. The Trust expects to enter into these
transactions primarily as a hedge against anticipated interest rate or
fixed-income market changes, for duration management or for risk management
purposes, but may also enter into these transactions to generate additional
income. All of the Trust's portfolio holdings, including derivative instruments,
are marked to market each day with the

 20


VAN KAMPEN STRATEGIC SECTOR MUNICIPAL TRUST

NOTES TO FINANCIAL STATEMENTS -- APRIL 30, 2005 (UNAUDITED) continued

change in value reflected in the unrealized appreciation/depreciation. Upon
disposition, a realized gain or loss is recognized accordingly, except when
taking delivery of a security underlying a futures contract. In this instance,
the recognition of gain or loss is postponed until the disposal of the security
underlying the futures contract.

    During the period, the Trust invested in futures contracts, a type of
derivative. A futures contract is an agreement involving the delivery of a
particular asset on a specified future date at an agreed upon price. The Trust
generally invests in exchange traded futures on U.S. Treasury Bonds and Notes
and typically closes the contract prior to delivery date. Upon entering into
futures contracts, the Trust maintains an amount of cash or liquid securities
with a value equal to a percentage of the contract amount with either a future
commission merchant pursuant to rules and regulations promulgated under the 1940
Act, as amended, or with its custodian in an account in the broker's name. This
amount is known as initial margin. During the period the futures contract is
open, payments are received from or made to the broker based upon changes in the
value of the contract (the variation margin). The risk of loss associated with a
futures contract is in excess of the variation margin reflected on the Statement
of Assets and Liabilities.

    Transactions in futures contracts for the six months ended April 30, 2005,
were as follows:

<Table>
<Caption>
                                                              CONTRACTS
                                                           
Outstanding at October 31, 2004.............................      642
Futures Opened..............................................    1,206
Futures Closed..............................................   (1,357)
                                                               ------
Outstanding at April 30, 2005...............................      491
                                                               ======
</Table>

    The futures contracts outstanding as of April 30, 2005, and the descriptions
and unrealized appreciation/depreciation are as follows:

<Table>
<Caption>
                                                                            UNREALIZED
                                                                           APPRECIATION/
                                                              CONTRACTS    DEPRECIATION
                                                                     
SHORT CONTRACTS:
U.S. Treasury Notes 5-Year Futures June 2005 (Current
  Notional Value of $108,453 per contract)..................     491         $(285,823)
                                                                 ===         =========
</Table>

5. PREFERRED SHARES

The Trust has outstanding 3,800 Auction Preferred Shares ("APS") in two series.
Series A contains 2,000 shares while Series B contains 1,800 shares. Dividends
are cumulative and the dividend rate for both Series is generally reset every 28
days through an auction process. At April 30, 2005, the average rate in effect
was 2.339%. During the six months ended April 30, 2005, the rates ranged from
1.250% to 2.450%.

    The Trust pays annual fees equivalent to .25% of the preferred share
liquidation value for the remarketing efforts associated with the preferred
auctions. These fees are included as a component of "Preferred Share
Maintenance" expense in the Statement of Operations.

    The APS are redeemable at the option of the Trust in whole or in part at the
liquidation value of $25,000 per share plus accumulated and unpaid dividends.
The Trust is subject to

                                                                              21


VAN KAMPEN STRATEGIC SECTOR MUNICIPAL TRUST

NOTES TO FINANCIAL STATEMENTS -- APRIL 30, 2005 (UNAUDITED) continued

certain asset coverage tests and the APS are subject to mandatory redemption if
the tests are not met.

6. INDEMNIFICATIONS

The Trust enters into contracts that contain a variety of indemnification. The
Trust's maximum exposure under these arrangements is unknown. However, the Trust
has not had prior claims or losses pursuant to these contracts and expects the
risk of loss to be remote.

7. TRUST MERGER

On May 11, 2005, the Trustees of Strategic Sector Municipal Trust ("Target
Trust") announced its intention to merge the Target Trust into Select Sector
Municipal Income Trust ("Acquiring Trust"). The Trustees of each of the trusts
have approved in principal an agreement and plan of reorganization between the
trusts providing for a transfer of assets and liabilities of the Target Trust to
the Acquiring Trust in exchange for shares of beneficial interest of the
Acquiring Trust ( the "Reorganization"). The Reorganization is subject to the
approval by the shareholders of the Target Trust.

 22


VAN KAMPEN STRATEGIC SECTOR MUNICIPAL TRUST

BOARD OF TRUSTEES, OFFICERS AND IMPORTANT ADDRESSES

BOARD OF TRUSTEES

DAVID C. ARCH
JERRY D. CHOATE
ROD DAMMEYER
LINDA HUTTON HEAGY
R. CRAIG KENNEDY
HOWARD J KERR
MITCHELL M. MERIN*
JACK E. NELSON
RICHARD F. POWERS, III*
HUGO F. SONNENSCHEIN
WAYNE W. WHALEN* - Chairman
SUZANNE H. WOOLSEY

OFFICERS

MITCHELL M. MERIN
President and Chief Executive Officer

RONALD E. ROBISON
Executive Vice President and
Principal Executive Officer

JOSEPH J. MCALINDEN
Executive Vice President and
Chief Investment Officer

AMY R. DOBERMAN
Vice President

STEFANIE V. CHANG
Vice President and Secretary

JOHN L. SULLIVAN
Chief Compliance Officer

JAMES W. GARRETT
Chief Financial Officer and Treasurer

INVESTMENT ADVISER

VAN KAMPEN ASSET MANAGEMENT
1221 Avenue of the Americas
New York, New York 10020

CUSTODIAN

STATE STREET BANK
AND TRUST COMPANY
225 Franklin Street
P.O. Box 1713
Boston, Massachusetts 02110

TRANSFER AGENT

EQUISERVE TRUST COMPANY, N.A.
P.O. Box 43011
Providence, Rhode Island 02940-3011

LEGAL COUNSEL

SKADDEN, ARPS, SLATE,
MEAGHER & FLOM LLP
333 West Wacker Drive
Chicago, Illinois 60606

INDEPENDENT AUDITORS

DELOITTE & TOUCHE LLP
180 North Stetson Avenue
Chicago, Illinois 60601

*   "Interested persons" of the Trust, as defined in the Investment Company Act
    of 1940, as amended.
                                                                              23


VAN KAMPEN

AN IMPORTANT NOTICE CONCERNING OUR U.S. PRIVACY POLICY

    We are required by federal law to provide you with a copy of our Privacy
Policy annually.

    The following Policy applies to current and former individual clients of Van
Kampen Investments Inc., Van Kampen Asset Management, Van Kampen Advisors Inc.,
Van Kampen Funds Inc., Van Kampen Investor Services Inc. and Van Kampen Exchange
Corp., as well as current and former individual investors in Van Kampen mutual
funds, unit investment trusts, and related companies.

    This Policy is not applicable to partnerships, corporations, trusts or other
non-individual clients or account holders, nor is this Policy applicable to
individuals who are either beneficiaries of a trust for which we serve as
trustee or participants in an employee benefit plan administered or advised by
us. This Policy is, however, applicable to individuals who select us to be a
custodian of securities or assets in individual retirement accounts, 401(k)
accounts, 529 Educational Savings Accounts, accounts subject to the Uniform
Gifts to Minors Act, or similar accounts.

    Please note that we may amend this Policy at any time, and will inform you
of any changes to this Policy as required by law.

WE RESPECT YOUR PRIVACY

We appreciate that you have provided us with your personal financial
information. We strive to maintain the privacy of such information while we help
you achieve your financial objectives. This Policy describes what non-public
personal information we collect about you, why we collect it, and when we may
share it with others.

    We hope this Policy will help you understand how we collect and share
non-public personal information that we gather about you. Throughout this
Policy, we refer to the non-public information that personally identifies you or
your accounts as "personal information."

1. WHAT PERSONAL INFORMATION DO WE COLLECT ABOUT YOU?

To serve you better and manage our business, it is important that we collect and
maintain accurate information about you. We may obtain this information from
applications and other forms you submit to us, from your dealings with us, from
consumer reporting agencies, from our Web sites and from third parties and other
sources.

    For example:

     --  We may collect information such as your name, address, e-mail address,
         telephone/fax numbers, assets, income and investment objectives through
         applications and other forms you submit to us.

     --  We may obtain information about account balances, your use of
         account(s) and the types of products and services you prefer to receive
         from us through your dealings and transactions with us and other
         sources.

     --  We may obtain information about your creditworthiness and credit
         history from consumer reporting agencies.

     --  We may collect background information from and through third-party
         vendors to verify representations you have made and to comply with
         various regulatory requirements.

     --  If you interact with us through our public and private Web sites, we
         may collect information that you provide directly through online
         communications (such as an e-mail address). We may also collect
         information about your Internet service provider, your domain name,
         your computer's operating system and Web browser, your use of our Web
         sites and your product and service preferences, through the use

                                                             (continued on back)

VAN KAMPEN

AN IMPORTANT NOTICE CONCERNING OUR U.S. PRIVACY POLICY continued

         of "cookies." "Cookies" recognize your computer each time you return to
         one of our sites, and help to improve our sites' content and
         personalize your experience on our sites by, for example, suggesting
         offerings that may interest you. Please consult the Terms of Use of
         these sites for more details on our use of cookies.

2. WHEN DO WE DISCLOSE PERSONAL INFORMATION WE COLLECT ABOUT YOU?

To provide you with the products and services you request, to serve you better
and to manage our business, we may disclose personal information we collect
about you to our affiliated companies and to non-affiliated third parties as
required or permitted by law.

A. INFORMATION WE DISCLOSE TO OUR AFFILIATED COMPANIES. We do not disclose
personal information that we collect about you to our affiliated companies
except to enable them to provide services on our behalf or as otherwise required
or permitted by law.

B. INFORMATION WE DISCLOSE TO THIRD PARTIES. We do not disclose personal
information that we collect about you to non-affiliated third parties except to
enable them to provide services on our behalf, to perform joint marketing
agreements with other financial institutions, or as otherwise required or
permitted by law. For example, some instances where we may disclose information
about you to non-affiliated third parties include: for servicing and processing
transactions, to offer our own products and services, to protect against fraud,
for institutional risk control, to respond to judicial process or to perform
services on our behalf. When we share personal information with these companies,
they are required to limit their use of personal information to the particular
purpose for which it was shared and they are not allowed to share personal
information with others except to fulfill that limited purpose.

3. HOW DO WE PROTECT THE SECURITY AND CONFIDENTIALITY OF PERSONAL INFORMATION WE
COLLECT ABOUT YOU?

We maintain physical, electronic and procedural security measures to help
safeguard the personal information we collect about you. We have internal
policies governing the proper handling of client information. Third parties that
provide support or marketing services on our behalf may also receive personal
information, and we require them to adhere to confidentiality standards with
respect to such information.

Van Kampen Funds Inc.
1 Parkview Plaza, P.O. Box 5555
Oakbrook Terrace, IL 60181-5555
www.vankampen.com

Copyright (C)2005 Van Kampen Funds Inc. All rights reserved.
Member NASD/SIPC.
VKS SAR 6/05 RN05-01286P-Y04/05
                                                   (VAN KAMPEN INVESTMENTS LOGO)


Item 2.   Code of Ethics.

Not applicable for semi-annual reports.

Item 3.   Audit Committee Financial Expert.

Not applicable for semi-annual reports.

Item 4.   Principal Accountant Fees and Services.

Not applicable for semi-annual reports.

Item 5.   Audit Committee of Listed Registrants.

Not applicable for semi-annual reports.

Item 6.   Schedule of Investments.

Please refer to Item #1.

Item 7.   Disclosure of Proxy Voting Policies and Procedures for Closed-End
Management Investment Companies.

Not applicable.

Item 8.   Portfolio Managers of Closed-End Management Investment Companies.

Not applicable.

Item 9.   Purchases of Equity Securities by Closed-End Management Investment
Company and Affiliated Purchasers.

Not applicable.

Item 10.  Submission of Matters to a Vote of Security Holders.

Not applicable.

Item 11.  Controls and Procedures

(a) The Trust's principal executive officer and principal financial officer have
concluded that the Trust's disclosure controls and procedures are sufficient to
ensure that information required to be disclosed by the Trust in this Form N-CSR
was recorded, processed, summarized and reported within the time periods
specified in the Securities and Exchange Commission's rules and forms, based
upon such officers' evaluation of these controls and procedures as of a date
within 90 days of the filing date of the report.

(b) There were no changes in the registrant's internal control over financial
reporting that occurred during the registrant's most recent fiscal half-year
(the registrant's second fiscal half-year in the case of an annual report) that
has materially affected, or is reasonably likely to materially affect, the
registrant's internal control over financial reporting.

Item 12.  Exhibits.

(a)  Code of Ethics - Not applicable for semi-annual reports.

(b)(1) A certification for the Principal Executive Officer of the registrant is
attached hereto as part of EX-99.CERT.
(b)(2) A certification for the Principal Financial Officer of the registrant is
attached hereto as part of EX-99.CERT.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934 and the
Investment Company Act of 1940, the registrant has duly caused this report to be
signed on its behalf by the undersigned, thereunto duly authorized.

(Registrant)  Van Kampen Strategic Sector Municipal Trust

By:   /s/ Ronald E. Robison
     ----------------------
Name: Ronald E. Robison
Title: Principal Executive Officer
Date: June 16, 2005

Pursuant to the requirements of the Securities Exchange Act of 1934 and the
Investment Company Act of 1940, this report has been signed by the following
persons on behalf of the registrant and in the capacities and on the dates
indicated.

By:  /s/ Ronald E. Robison
     ----------------------
Name: Ronald E. Robison
Title: Principal Executive Officer
Date: June 16, 2005

By:  /s/ James W. Garrett
     ----------------------
Name: James W. Garrett
Title: Principal Financial Officer
Date: June 16, 2005