UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM N-CSR CERTIFIED SHAREHOLDER REPORT OF REGISTERED MANAGEMENT INVESTMENT COMPANIES Investment Company Act file number: 811-2715 Exact name of registrant as specified in charter: Delaware Group State Tax-Free Income Trust Address of principal executive offices: 2005 Market Street Philadelphia, PA 19103 Name and address of agent for service: David F. Connor, Esq. 2005 Market Street Philadelphia, PA 19103 Registrant's telephone number, including area code: (800) 523-1918 Date of fiscal year end: February 28 Date of reporting period: August 31, 2006 <page> Item 1. Semiannual Report Delaware Tax-Free Pennsylvania Fund August 31, 2006 Fixed income mutual fund [DELAWARE INVESTMENTS LOGO] [LOGO] POWERED BY RESEARCH(R) Table of contents > Disclosure of Fund expenses .................................................1 > Sector allocation and credit rating breakdown ...............................2 > Statement of net assets .....................................................3 > Statement of operations .....................................................8 > Statements of changes in net assets .........................................9 > Financial highlights .......................................................10 > Notes to financial statements ..............................................13 > Other Fund information .....................................................16 > About the organization .....................................................18 Funds are not FDIC insured and are not guaranteed. It is possible to lose the principal amount invested. Mutual fund advisory services provided by Delaware Management Company, a series of Delaware Management Business Trust, which is a registered investment advisor. (C) 2006 Delaware Distributors, L.P. Disclosure of Fund expenses For the period March 1, 2006 to August 31, 2006 As a shareholder of the Fund, you incur two types of costs: (1) transaction costs, including sales charges (loads) on purchase payments, reinvested dividends, or other distributions; redemption fees; and exchange fees; and (2) ongoing costs, including management fees; distribution and/or service (12b-1) fees; and other Fund expenses. This example is intended to help you understand your ongoing costs (in dollars) of investing in the Fund and to compare these costs with the ongoing costs of investing in other mutual funds. The example is based on an investment of $1,000 invested at the beginning of the period and held for the entire period March 1, 2006 to August 31, 2006. Actual Expenses The first section of the table shown, "Actual Fund Return," provides information about actual account values and actual expenses. You may use the information in this section of the table, together with the amount you invested, to estimate the expenses that you paid over the period. Simply divide your account value by $1,000 (for example, an $8,600 account value divided by $1,000 = 8.6), then multiply the result by the number in the first section under the heading entitled "Expenses Paid During Period" to estimate the expenses you paid on your account during this period. Hypothetical Example for Comparison Purposes The second section of the table shown, "Hypothetical 5% Return," provides information about hypothetical account values and hypothetical expenses based on the Fund's actual expense ratio and an assumed rate of return of 5% per year before expenses, which is not the Fund's actual return. The hypothetical account values and expenses may not be used to estimate the actual ending account balance or expenses you paid for the period. You may use this information to compare the ongoing costs of investing in the Fund and other funds. To do so, compare this 5% hypothetical example with the 5% hypothetical examples that appear in the shareholder reports of the other funds. Please note that the expenses shown in the table are meant to highlight your ongoing costs only and do not reflect any transactional costs, such as sales charges (loads), redemption fees, or exchange fees. Therefore, the second section of the table is useful in comparing ongoing costs only, and will not help you determine the relative total costs of owning different funds. In addition, if these transactional costs were included, your costs would have been higher. The Fund's actual expenses shown in the table reflect fee waivers in effect. The expenses shown in the table assume reinvestment of all dividends and distributions. Delaware Tax-Free Pennsylvania Fund Expense Analysis of an Investment of $1,000 Expenses Beginning Ending Paid During Account Account Annualized Period Value Value Expense 3/1/06 to 3/1/06 8/31/06 Ratios 8/31/06* ________________________________________________________________________________ Actual Fund Return Class A $1,000.00 $1,017.70 0.91% $4.63 Class B 1,000.00 1,013.80 1.68% 8.53 Class C 1,000.00 1,013.80 1.68% 8.53 ________________________________________________________________________________ Hypothetical 5% Return (5% return before expenses) Class A $1,000.00 $1,020.62 0.91% $4.63 Class B 1,000.00 1,016.74 1.68% 8.54 Class C 1,000.00 1,016.74 1.68% 8.54 ________________________________________________________________________________ *"Expenses Paid During Period" are equal to the Fund's annualized expense ratio, multiplied by the average account value over the period, multiplied by the 184/365 (to reflect the one-half year period). 1 Sector allocation and credit rating breakdown Delaware Tax-Free Pennsylvania Fund As of August 31, 2006 Sector designations may be different than the sector designations presented in other Fund materials. Percentage Sector of Net Assets ________________________________________________________________________________ Municipal Bonds 97.93% Corporate-Backed Revenue Bonds 12.25% Education Revenue Bonds 16.58% Electric Revenue Bonds 0.35% Escrowed to Maturity Bonds 7.12% Health Care Revenue Bonds 14.35% Housing Revenue Bonds 2.47% Lease Revenue Bonds 4.57% Local General Obligation Bonds 5.87% Pre-Refunded Bonds 10.35% Transportation Revenue Bonds 10.49% Water & Sewer Revenue Bonds 13.53% ________________________________________________________________________________ Short-Term Investments 0.74% ________________________________________________________________________________ Total Market Value of Securities 98.67% ________________________________________________________________________________ Receivables and Other Assets Net of Liabilities 1.33% ________________________________________________________________________________ Total Net Assets 100.00% ________________________________________________________________________________ Credit Rating Breakdown (as a % of fixed income investments) ________________________________________________________________________________ AAA 42.59% AA 25.41% A 13.44% BBB 15.42% BB 0.67% NR 2.47% ________________________________________________________________________________ Total 100.00% ________________________________________________________________________________ 2 Statement of net assets Delaware Tax-Free Pennsylvania Fund August 31, 2006 (Unaudited) Principal Market Amount Value ________________________________________________________________________________ Municipal Bonds - 97.93% ________________________________________________________________________________ Corporate-Backed Revenue Bonds - 12.25% Allegheny County Industrial Development Authority Environmental Improvement Revenue (USX Corp. Project) 5.50% 12/1/29 $13,000,000 $13,417,300 Beaver County Industrial Development Authority Pollution Control Revenue (Atlantic Richfield Co. Project) 5.95% 7/1/21 5,100,000 5,210,517 Bucks County Industrial Development Authority Environmental Improvement Revenue (USX Corp. Project) 5.40% 11/1/17 2,250,000 2,407,320 Carbon County Industrial Development Authority Resource Recovery Revenue (Panther Creek Partners Project) 6.65% 5/1/10 (AMT) 6,760,000 7,138,830 Dauphin County Industrial Development Authority Water Revenue (Dauphin Consolidated Water Supply Project) Series B 6.70% 6/1/17 1,750,000 2,114,560 Delaware County Industrial Development Authority Water Facilities Revenue (Aqua Income Project) Series C 5.00% 2/1/35 (FGIC) (AMT) 7,670,000 7,927,789 (Philadelphia Suburban Water Project) 6.00% 6/1/29 (FGIC) (AMT) 3,000,000 3,198,540 Indiana County Industrial Development Authority Pollution Control Revenue (PSE&G Power Project) 5.85% 6/1/27 (AMT) 3,000,000 3,163,770 Luzerne County Industrial Development Authority Water Facilities Revenue (American Water Co. Project) Series A 5.10% 9/1/34 (AMBAC) (AMT) 15,000,000 15,602,100 Pennsylvania Economic Development Financing Authority Solid Waste Disposal Revenue (Proctor & Gamble Paper Project) 5.375% 3/1/31 (AMT) 10,000,000 11,298,900 __________ 71,479,626 __________ Education Revenue Bonds - 16.58% Allegheny County Higher Education Building Authority Revenue (Carnegie Mellon University Project) 5.25% 3/1/32 1,900,000 1,997,546 Allegheny County Higher Education Building Authority Revenue (Chatham College Project) Series A 5.85% 3/1/22 650,000 687,635 Series A 5.95% 3/1/32 1,000,000 1,051,810 Series B 5.75% 11/15/35 4,000,000 4,223,480 Delaware County Authority College Revenue (Eastern College Project) Series B 5.50% 10/1/19 4,175,000 4,281,087 5.50% 10/1/24 2,850,000 2,915,037 (Haverford College Project) 5.75% 11/15/29 1,875,000 2,026,444 Erie Higher Education Building Authority College Revenue (Mercyhurst College Project) Series B 5.00% 3/15/23 750,000 761,273 Lancaster Higher Education Authority College Revenue (Franklin & Marshall College) 5.00% 4/15/23 6,390,000 6,741,706 Lehigh County General Purpose Authority Revenue (Desales University Project) 5.125% 12/15/23 (RADIAN) 5,000,000 5,201,100 Lycoming County Authority College Revenue (Pennsylvania College of Technology Project) 5.375% 7/1/30 (AMBAC) 5,000,000 5,276,850 Pennsylvania Economic Development Financing Authority School Revenue (Germantown Friends School Project) 5.35% 8/15/31 2,820,000 2,947,887 Pennsylvania State Higher Educational Facilities Authority College & University Revenue (Drexel University Project) Series A 5.20% 5/1/29 1,500,000 1,563,360 5.20% 5/1/32 1,000,000 1,040,490 (Lafayette College Project) 6.00% 5/1/30 2,500,000 2,684,675 (Philadelphia University Project) 1,665,000 1,689,276 5.00% 6/1/35 6.00% 6/1/29 (RADIAN) 1,800,000 1,925,694 (Thomas Jefferson University Project) 5.00% 1/1/29 5,000,000 5,170,950 (Trustees University) Series C 5.00% 7/15/38 6,000,000 6,277,500 (Ursinus College) 5.125% 1/1/33 (RADIAN) 2,000,000 2,072,120 (Widener University) 5.00% 7/15/39 7,915,000 8,051,849 (continues) 3 Statement of net assets Delaware Tax-Free Pennsylvania Fund Principal Market Amount Value ________________________________________________________________________________ Municipal Bonds (continued) ________________________________________________________________________________ Education Revenue Bonds (continued) Pennsylvania State Public School Building Authority Revenue (Lehigh Career & Technical Institute Project) 5.125% 10/1/28 (FGIC) $ 2,800,000 $ 2,943,892 Pennsylvania State University 5.00% 9/1/29 2,500,000 2,636,150 Philadelphia Hospitals & Higher Educational Facilities Authority Revenue (Chestnut Hill College Project) 6.00% 10/1/29 4,360,000 4,450,470 Philadelphia Redevelopment Authority Revenue (Beech Student Housing Complex Project) 5.50% 7/1/35 (ACA) 1,500,000 1,566,285 5.625% 7/1/28 (ACA) 1,000,000 1,062,320 Swarthmore Borough Authority College Revenue (Swarthmore College Project) 5.00% 9/15/31 15,000,000 15,467,399 ___________ 96,714,285 ___________ Electric Revenue Bonds - 0.35% ^ Philadelphia Gas Works Revenue Capital Appreciation Series C 6.884% 1/1/12 (AMBAC) 2,500,000 2,037,775 ___________ 2,037,775 ___________ Escrowed to Maturity Bonds - 7.12% Delaware County Authority Health Facilities Revenue (Mercy Health Corp. Project) 6.00% 12/15/26 3,500,000 3,593,975 Pennsylvania State Higher Educational Facilities Authority College & University Revenue (University of the Arts Project) 5.20% 3/15/25 (RADIAN) 4,490,000 4,964,907 Philadelphia Authority for Industrial Development Commercial Revenue (Girard Estates Facilities Leasing Project) 5.00% 5/15/27 4,500,000 4,533,210 Philadelphia Hospitals & Higher Education Facilities Authority Revenue (Presbyterian Medical Center Project) 6.65% 12/1/19 13,000,000 15,790,450 Pittsburgh Water & Sewer Authority Revenue (Crossover Refunding Projects) 7.25% 9/1/14 (FGIC) 7,665,000 8,714,415 Southcentral General Authority Revenue Refunding (Wellspan Health Obligated Project) 5.625% 5/15/26 3,610,000 3,914,937 ___________ 41,511,894 ___________ Health Care Revenue Bonds - 14.35% Allegheny County Hospital Development Authority Revenue (Ohio Valley General Hospital Project) Series A 5.125% 4/1/35 1,750,000 1,783,758 Berks County Municipal Authority Revenue (Health Care Reading Hospital Pooled Financing Project) 5.00% 3/1/28 11,750,000 11,985,587 Chester County Health & Educational Facilities Authority Revenue (Jefferson Health Systems Project) Series B 5.375% 5/15/27 14,270,000 14,695,388 Delaware County Industrial Development Authority Revenue (Main Line Care Institute Project) 9.00% 8/1/31 1,782,389 1,490,737 Lancaster County Hospital Authority Revenue (General Hospital Project) 5.50% 3/15/26 3,000,000 3,200,640 (Willow Valley Retirement Project) 5.875% 6/1/31 2,100,000 2,218,944 Monroe County Hospital Authority Revenue (Pocono Medical Center Project) 6.00% 1/1/43 6,710,000 7,172,386 Montgomery County Higher Education & Health Authority Revenue (Abington Memorial Hospital) Series A 5.125% 6/1/32 6,500,000 6,705,140 (Catholic Health East) Series C 5.50% 11/15/24 1,150,000 1,239,953 Montgomery County Industrial Development Authority Revenue (Foulkeways at Gwynedd Project) Series A 5.00% 12/1/24 1,000,000 1,021,610 5.00% 12/1/30 1,500,000 1,521,870 Mount Lebanon Hospital Authority Revenue (St. Clair Memorial Hospital Project) Series A 5.625% 7/1/32 4,500,000 4,767,570 Pennsylvania Economic Development Financing Authority Revenue (Dr. Gertrude A. Barber Center, Inc. Project) 5.90% 12/1/30 (RADIAN) 2,250,000 2,414,048 Pennsylvania State Higher Educational Facilities Authority Revenue (UPMC Health Systems Project) Series A 6.00% 1/15/31 10,000,000 10,901,600 Philadelphia Authority for Industrial Development Revenue (Germantown Senior Living Presbyterian Homes Project) Series A 5.625% 7/1/35 2,295,000 2,327,107 St. Mary Hospital Authority Health System Revenue (Catholic Health East) Series B 5.375% 11/15/34 9,750,000 10,280,010 ___________ 83,726,348 ___________ 4 Principal Market Amount Value ________________________________________________________________________________ Municipal Bonds (continued) ________________________________________________________________________________ Housing Revenue Bonds - 2.47% Allegheny County Residential Finance Authority Single Family Mortgage Revenue Series II-2 5.90% 11/1/32 (GNMA) (AMT) $ 890,000 $ 923,891 Series KK-2 5.40% 5/1/26 (GNMA) (AMT) 2,540,000 2,618,791 Pennsylvania Housing Finance Agency Single Family Mortgage Series 66A 5.65% 4/1/29 (AMT) 415,000 421,213 Series 72A 5.35% 10/1/31 (AMT) 5,190,000 5,307,813 Series 94A 5.15% 10/1/37 (AMT) 5,000,000 5,132,950 ___________ 14,404,658 ___________ Lease Revenue Bonds - 4.57% Allegheny County Industrial Development Authority Lease Revenue (Residential Resource Inc. Project) 5.10% 9/1/26 1,370,000 1,393,633 5.125% 9/1/31 1,515,000 1,537,271 Pennsylvania State Public School Building Authority Revenue (Lehigh Career & Technical Institute Project) 5.25% 10/1/32 (FGIC) 2,140,000 2,266,110 Philadelphia Authority for Industrial Development Lease Revenue Series B 5.25% 10/1/30 (FSA) 4,510,000 4,750,609 Puerto Rico Public Buildings Authority Revenue (Government Facilities) Series I 5.25% 7/1/33 16,000,000 16,713,919 ___________ 26,661,542 ___________ Local General Obligation Bonds - 5.87% Abington School District Series A 5.00% 4/1/29 (FSA) 3,085,000 3,254,181 Allegheny County Redevelopment Authority Tax Increment Revenue (Waterfront Project) Series B 6.00% 12/15/10 600,000 625,836 6.40% 12/15/18 1,500,000 1,629,330 Bucks County Industrial Development Authority Multi- Family County-Guaranteed (New Hope Manor Project) Series A 5.40% 3/1/22 (AMT) 1,265,000 1,308,984 5.50% 3/1/41 (AMT) 5,340,000 5,489,039 Canon McMillan School District Series B 5.25% 12/1/34 (FGIC) 3,580,000 3,821,006 Catasauqua Area School District 5.00% 2/15/31 (FSA) 1,000,000 1,053,500 5.00% 2/15/36 (FSA) 6,825,000 7,168,502 Greater Johnstown School District Series C 5.125% 8/1/25 (MBIA) 7,490,000 7,840,008 Lancaster County Series A 5.00% 11/1/27 (FGIC) 2,000,000 2,076,260 ___________ 34,266,646 ___________ $ Pre-Refunded Bonds - 10.35% Erie Water Authority Revenue Series A 5.125% 12/1/25-11 (MBIA) 4,000,000 4,284,880 Harrisburg Authority Office & Parking Revenue Series A 6.00% 5/1/19-08 7,500,000 7,794,675 Indiana County Industrial Development Authority Revenue (Student Co-op Association, Inc. Project) Series A 5.875% 11/1/24-06 (AMBAC) 1,000,000 1,003,830 5.875% 11/1/29-06 (AMBAC) 1,000,000 1,003,830 Lancaster Industrial Development Authority Revenue (Garden Spot Village Project) Series A 7.625% 5/1/31-10 1,650,000 1,885,191 McGuffey School District 5.125% 8/1/31-11 (FGIC) 2,000,000 2,136,720 Norwin School District 6.00% 4/1/30-10 (FGIC) 2,000,000 2,159,600 Pennsylvania State Higher Education Assistance Agency Capital Acquisition 5.875% 12/15/30-10 (MBIA) 7,385,000 8,045,810 Pennsylvania State Higher Educational Facilities Authority Revenue (Drexel University Project) 6.00% 5/1/29-09 3,000,000 3,182,520 (Ursinus College Project) 5.90% 1/1/27-07 1,000,000 1,027,480 Pennsylvania State Turnpike Commission Registration Series F 5.00% 7/15/31-11 (AMBAC) 1,000,000 1,069,720 5.00% 7/15/41-11 (AMBAC) 1,600,000 1,711,552 Philadelphia Authority for Industrial Development Revenues (Stapeley Hall Germantown Continuing Care Community Project) 6.60% 1/1/16-07 5,250,000 5,348,018 Southcentral General Authority Revenue (Welllspan Health Obligated Project) 5.625% 5/15/26-11 16,390,000 17,911,483 West Cornwall Township Municipal Authority College Revenue (Elizabethtown College Project) 6.00% 12/15/27-11 1,615,000 1,789,145 ___________ 60,354,454 ___________ (continues) 5 Statement of net assets Delaware Tax-Free Pennsylvania Fund Principal Market Amount Value ________________________________________________________________________________ Municipal Bonds (continued) ________________________________________________________________________________ Transportation Revenue Bonds - 10.49% Allegheny County Airport Revenue (Pittsburgh International Airport Project) Series A 5.75% 1/1/14 (MBIA) (AMT) $ 6,910,000 $ 7,650,752 Delaware River Port Authority (Pennsylvania & New Jersey Port District Project) Series B 5.70% 1/1/21 (FSA) 8,560,000 9,087,638 Delaware River Toll Bridge 5.00% 7/1/28 3,000,000 3,111,330 Erie, Western Pennsylvania Port Authority General Revenue 6.25% 6/15/10 (AMT) 1,115,000 1,144,481 Lehigh Northampton Airport Authority Revenue (Lehigh Valley Airport Project) Series A 6.00% 5/15/25 (MBIA) (AMT) 1,525,000 1,631,415 6.00% 5/15/30 (MBIA) (AMT) 2,700,000 2,888,406 Pennsylvania Economic Development Financing Authority Exempt Facilities Revenue (Amtrak Project) Series A 6.375% 11/1/41 (AMT) 5,000,000 5,365,450 Pennsylvania Economic Development Financing Authority Revenue (30th Street Station Garage Project) 5.875% 6/1/33 (ACA) (AMT) 4,500,000 4,845,240 Pennsylvania State Turnpike Commission Revenue Series A 5.00% 12/1/34 (AMBAC) 8,000,000 8,376,480 Series R 5.00% 12/1/30 (AMBAC) 2,500,000 2,604,300 Philadelphia Authority for Industrial Development Revenue (Sub-Air Cargo Project) Series A 7.50% 1/1/25 (AMT) 2,500,000 2,743,225 Puerto Rico Commonwealth Highway & Transportation Authority Revenue Series G 5.00% 7/1/33 3,000,000 3,059,790 Series G 5.00% 7/1/42 5,000,000 5,078,300 Series J 5.00% 7/1/34 3,550,000 3,627,071 ____________ 61,213,878 ____________ Water & Sewer Revenue Bonds - 13.53% Allegheny County Sanitation Authority Sewer Revenue Series A 5.00% 12/1/30 (MBIA) 2,500,000 2,623,475 & First Albany Corp. Municipal Trusts Inverse Floater 5.43% 12/15/14 (AMBAC) 46,500,000 52,753,785 Philadelphia Water & Waste Revenue Series A 5.00% 7/1/35 (FSA) 7,130,000 7,458,479 Pittsburgh Water & Sewer Authority Revenue First Lien 5.00% 9/1/29 (MBIA) 2,210,000 2,325,296 5.125% 12/1/31 (AMBAC) 10,000,000 10,509,200 Westmoreland County Municipal Authority Service Revenue 5.25% 8/15/28 (FSA) 3,000,000 3,231,870 ____________ 78,902,105 ____________ Total Municipal Bonds (cost $530,321,082) 571,273,211 ____________ _______________________________________________________________________________ Short-Term Investments - 0.74% _______________________________________________________________________________ ~ Variable Rate Demand Notes - 0.74% Allegheny County Higher Education Building Authority University Revenue 3.50% 12/1/33 1,000,000 1,000,000 Allegheny County Hospital Development Authority Revenue (Pittsburgh Children) Series A 3.43% 6/1/09 1,000,000 1,000,000 Lackawanna County Series B 3.43% 10/15/29 (FSA) 500,000 500,000 Philadelphia Authority for Industrial Development Revenue (Inglis House Project) 3.43% 5/1/17 800,000 800,000 Westmoreland County Industrial Development Authority Revenue (Health Systems Excela Project) Series B 3.40% 7/1/27 (LOC - Wachovia Bank N.A.) 1,000,000 1,000,000 ____________ Total Short-Term Investments (cost $4,300,000) 4,300,000 ____________ Total Market Value of Securities - 98.67% (cost $534,621,082) 575,573,211 Receivables and Other Assets Net of Liabilities - 1.33% 7,762,740 ____________ Net Assets Applicable to 72,165,069 Shares Outstanding - 100.00% $583,335,951 ____________ Net Asset Value - Delaware Tax-Free Pennsylvania Fund Class A ($560,930,646 / 69,393,284 Shares) $8.08 _____ Net Asset Value - Delaware Tax-Free Pennsylvania Fund Class B ($14,095,303 / 1,743,905 Shares) $8.08 _____ Net Asset Value - Delaware Tax-Free Pennsylvania Fund Class C ($8,310,002 / 1,027,880 Shares) $8.08 _____ Components of Net Assets at August 31, 2006: Shares of beneficial interest (unlimited authorization - no par) $565,813,731 Accumulated net realized loss on investments (23,429,909) Net unrealized appreciation of investments 40,952,129 ____________ Total net assets $583,335,951 ____________ 6 ________________________________________________________________________________ ________________________________________________________________________________ & An inverse floater bond is a type of bond with variable or floating interest rates that move in the opposite direction of short-term interest rates. Interest rate disclosed is in effect as of August 31, 2006. See Note 7 in "Notes to Financial Statements." ^ Zero coupon security. The rate shown is the yield at the time of purchase. $ Pre-Refunded Bonds. Municipals that are generally backed or secured by U.S. Treasury bonds. For Pre-Refunded Bonds, the stated maturity is followed by the year in which the bond is pre-refunded. See Note 7 in "Notes to Financial Statements." ~ Variable rate security. The interest rate shown is the rate as of August 31, 2006. Summary of Abbreviations: ACA - Insured by American Capital Access AMBAC - Insured by the AMBAC Assurance Corporation AMT - Subject to Alternative Minimum Tax FGIC - Insured by the Financial Guaranty Insurance Company FSA - Insured by Financial Security Assurance GNMA - Insured by Government National Mortgage Association LOC - Letter of Credit MBIA - Insured by the Municipal Bond Insurance Association RADIAN - Insured by Radian Asset Assurance Net Asset Value and Offering Price Per Share - Delaware Tax-Free Pennsylvania Fund Net asset value Class A (A) $8.08 Sales charge (4.50% of offering price) (B) 0.38 _____ Offering price $8.46 _____ (A) Net asset value per share, as illustrated, is the amount which would be paid upon redemption or repurchase of shares. (B) See the current prospectus for purchases of $100,000 or more. See accompanying notes 7 Statement of operations Delaware Tax-Free Pennsylvania Fund Six Months Ended August 31, 2006 (Unaudited) Investment Income: Interest $15,089,555 ___________ Expenses: Management fees $1,595,934 Distribution expenses - Class A 763,803 Distribution expenses - Class B 78,642 Distribution expenses - Class C 40,592 Dividend disbursing and transfer agent fees and expenses 172,953 Accounting and administration expenses 117,592 Legal and professional fees 59,709 Trustees' fees 16,582 Reports and statements to shareholders 14,542 Registration fees 11,245 Insurance fees 9,462 Custodian fees 5,177 Pricing fees 1,918 Other 10,226 2,898,377 __________ Less waived disribution expenses - Class A (120,948) Less expenses absorbed or waived (23,862) Less expense paid indirectly (2,897) ___________ Total operating expenses 2,750,670 ___________ Net Investment Income 12,338,885 ___________ Net Realized and Unrealized Gain (Loss) on Investments: Net realized gain on investments 260,434 Net change in unrealized appreciation/depreciation of investments (2,484,034) ___________ Net Realized and Unrealized Loss on Investments (2,223,600) ___________ Net Increase in Net Assets Resulting from Operations $10,115,285 ___________ See accompanying notes 8 Statements of changes in net assets Delaware Tax-Free Pennsylvania Fund Six Months Year Ended Ended 8/31/06 2/28/06 (Unaudited) Increase (Decrease) in Net Assets from Operations: Net investment income $ 12,338,885 $ 25,984,710 Net realized gain on investments 260,434 2,019,077 Net change in unrealized appreciation/depreciation of investments (2,484,034) (4,373,724) ____________ ____________ Net increase in net assets resulting from operations 10,115,285 23,630,063 ____________ ____________ Dividends and Distributions to Shareholders from: Net investment income: Class A (11,926,869) (25,027,299) Class B (271,769) (694,972) Class C (140,247) (262,439) ____________ ____________ (12,338,885) (25,984,710) ____________ ____________ Capital Share Transactions: Proceeds from shares sold: Class A 16,026,420 16,672,721 Class B 110,504 889,307 Class C 452,446 1,745,792 Net asset value of shares issued upon reinvestment of dividends and distributions: Class A 7,048,279 14,709,393 Class B 153,733 373,907 Class C 108,417 193,099 ____________ ____________ 23,899,799 34,584,219 ____________ ____________ Cost of shares repurchased: Class A (30,372,476) (57,983,544) Class B (3,832,899) (6,658,177) Class C (176,204) (810,262) ____________ ____________ (34,381,579) (65,451,983) ____________ ____________ Decrease in net assets derived from capital share transactions (10,481,780) (30,867,764) ____________ ____________ Net Decrease in Net Assets (12,705,380) (33,222,411) Net Assets: Beginning of period 596,041,331 629,263,742 ____________ ____________ End of period (there was no undistributed net investment income at either period end) $583,335,951 $596,041,331 ____________ ____________ See accompanying notes 9 Financial highlights Delaware Tax-Free Pennsylvania Fund Class A Selected data for each share of the Fund outstanding throughout each period were as follows: Six Months Year Ended Ended _______________________________________________________ 8/31/06 (1) (Unaudited) 2/28/06 2/28/05 2/29/04 2/28/03 2/28/02 ____________________________________________________________________________________________________________________________________ Net asset value, beginning of period $8.110 $8.140 $8.250 $8.140 $7.950 $7.820 Income (loss) from investment operations: Net investment income 0.171 0.347 0.365 0.365 0.374 0.387 Net realized and unrealized gain (loss) on investments (0.030) (0.030) (0.110) 0.110 0.189 0.130 ______ ______ ______ ______ ______ ______ Total from investment operations 0.141 0.317 0.255 0.475 0.563 0.517 ______ ______ ______ ______ ______ ______ Less dividends and distributions from: Net investment income (0.171) (0.347) (0.365) (0.365) (0.373) (0.387) ______ ______ ______ ______ ______ ______ Total dividends and distributions (0.171) (0.347) (0.365) (0.365) (0.373) (0.387) ______ ______ ______ ______ ______ ______ Net asset value, end of period $8.080 $8.110 $8.140 $8.250 $8.140 $7.950 ______ ______ ______ ______ ______ ______ Total return (2) 1.77% 3.97% 3.23% 6.00% 7.29% 6.78% Ratios and supplemental data: Net assets, end of period (000 omitted) $560,931 $570,329 $599,172 $638,325 $669,042 $682,030 Ratio of expenses to average net assets 0.91% 0.91% 0.89% 0.90% 0.92% 0.89% Ratio of expenses to average net assets prior to expense limitation and expenses paid indirectly 0.96% 0.95% 0.93% 0.94% 0.92% 0.89% Ratio of net investment income to average net assets 4.22% 4.27% 4.54% 4.47% 4.69% 4.92% Ratio of net investment income to average net assets prior to expense limitation and expenses paid indirectly 4.17% 4.23% 4.50% 4.43% 4.69% 4.92% Portfolio turnover 10% 13% 11% 12% 18% 38% ____________________________________________________________________________________________________________________________________ (1) Ratios and portfolio turnover have been annualized and total return has not been annualized. (2) Total investment return is based on the change in net asset value of a share during the period and assumes reinvestment of dividends and distributions at net asset value and does not reflect the impact of a sales charge. Total investment return reflects waivers and payment of fees by the manager and distributor, as applicable. Performance would have been lower had the expense limitation not been in effect. See accompanying notes 10 Delaware Tax-Free Pennsylvania Fund Class B Selected data for each share of the Fund outstanding throughout each period were as follows: Six Months Year Ended Ended _______________________________________________________ 8/31/06 (1) (Unaudited) 2/28/06 2/28/05 2/29/04 2/28/03 2/28/02 ____________________________________________________________________________________________________________________________________ Net asset value, beginning of period $8.110 $8.140 $8.250 $8.140 $7.950 $7.820 Income (loss) from investment operations: Net investment income 0.139 0.285 0.303 0.301 0.312 0.324 Net realized and unrealized gain (loss) on investments (0.030) (0.030) (0.110) 0.110 0.189 0.130 ______ ______ ______ ______ ______ ______ Total from investment operations 0.109 0.255 0.193 0.411 0.501 0.454 ______ ______ ______ ______ ______ ______ Less dividends and distributions from: Net investment income (0.139) (0.285) (0.303) (0.301) (0.311) (0.324) ______ ______ ______ ______ ______ ______ Total dividends and distributions (0.139) (0.285) (0.303) (0.301) (0.311) (0.324) ______ ______ ______ ______ ______ ______ Net asset value, end of period $8.080 $8.110 $8.140 $8.250 $8.140 $7.950 ______ ______ ______ ______ ______ ______ Total return (2) 1.38% 3.17% 2.44% 5.17% 6.46% 5.93% Ratios and supplemental data: Net assets, end of period (000 omitted) $14,095 $17,762 $23,235 $29,589 $34,914 $37,533 Ratio of expenses to average net assets 1.68% 1.68% 1.67% 1.68% 1.70% 1.69% Ratio of expenses to average net assets prior to expense limitation and expenses paid indirectly 1.69% 1.68% 1.67% 1.68% 1.70% 1.69% Ratio of net investment income to average net assets 3.45% 3.50% 3.76% 3.69% 3.91% 4.12% Ratio of net investment income to average net assets prior to expense limitation and expenses paid indirectly 3.44% 3.50% 3.76% 3.69% 3.91% 4.12% Portfolio turnover 10% 13% 11% 12% 18% 38% ____________________________________________________________________________________________________________________________________ (1) Ratios and portfolio turnover have been annualized and total return has not been annualized. (2) Total investment return is based on the change in net asset value of a share during the period and assumes reinvestment of dividends and distributions at net asset value and does not reflect the impact of a sales charge. Total investment return reflects waivers and payment of fees by the manager, as applicable. Performance would have been lower had the expense limitation not been in effect. See accompanying notes (continues) 11 Financial highlights Delaware Tax-Free Pennsylvania Fund Class C Selected data for each share of the Fund outstanding throughout each period were as follows: Six Months Year Ended Ended _______________________________________________________ 8/31/06 (1) (Unaudited) 2/28/06 2/28/05 2/29/04 2/28/03 2/28/02 ____________________________________________________________________________________________________________________________________ Net asset value, beginning of period $8.110 $8.140 $8.250 $8.140 $7.950 $7.820 Income (loss) from investment operations: Net investment income 0.139 0.284 0.302 0.301 0.312 0.324 Net realized and unrealized gain (loss) on investments (0.030) (0.030) (0.110) 0.110 0.189 0.130 ______ ______ ______ ______ ______ ______ Total from investment operations 0.109 0.254 0.192 0.411 0.501 0.454 ______ ______ ______ ______ ______ ______ Less dividends and distributions from: Net investment income (0.139) (0.284) (0.302) (0.301) (0.311) (0.324) ______ ______ ______ ______ ______ ______ Total dividends and distributions (0.139) (0.284) (0.302) (0.301) (0.311) (0.324) ______ ______ ______ ______ ______ ______ Net asset value, end of period $8.080 $8.110 $8.140 $8.250 $8.140 $7.950 ______ ______ ______ ______ ______ ______ Total return (2) 1.38% 3.17% 2.43% 5.17% 6.46% 5.93% Ratios and supplemental data: Net assets, end of period (000 omitted) $8,310 $7,950 $6,857 $6,070 $5,197 $4,512 Ratio of expenses to average net assets 1.68% 1.68% 1.67% 1.68% 1.70% 1.69% Ratio of expenses to average net assets prior to expense limitation and expenses paid indirectly 1.69% 1.68% 1.67% 1.68% 1.70% 1.69% Ratio of net investment income to average net assets 3.45% 3.50% 3.76% 3.69% 3.91% 4.12% Ratio of net investment income to average net assets prior to expense limitation and expenses paid indirectly 3.44% 3.50% 3.76% 3.69% 3.91% 4.12% Portfolio turnover 10% 13% 11% 12% 18% 38% ____________________________________________________________________________________________________________________________________ (1) Ratios and portfolio turnover have been annualized and total return has not been annualized. (2) Total investment return is based on the change in net asset value of a share during the period and assumes reinvestment of dividends and distributions at net asset value and does not reflect the impact of a sales charge. Total investment return reflects waivers and payment of fees by the manager, as applicable. Performance would have been lower had the expense limitation not been in effect. See accompanying notes 12 Notes to financial statements Delaware Tax-Free Pennsylvania Fund August 31, 2006 (Unaudited) Delaware Group State Tax-Free Income Trust (the "Trust") is organized as a Delaware statutory trust and offers one series: Delaware Tax-Free Pennsylvania Fund (the "Fund"). The Trust is an open-end investment company. The Fund is considered non-diversified under the Investment Company Act of 1940, as amended, and offers Class A, Class B and Class C shares. Class A shares are sold with a front-end sales charge of up to 4.50%. Class A share purchases of $1,000,000 or more will incur a contingent deferred sales charge of up to 1% if redeemed during the first two years, provided that, a financial advisor was paid commission on the purchase of those shares. Class B shares are sold with a contingent deferred sales charge that declines from 4% to zero depending upon the period of time the shares are held. Class B shares will automatically convert to Class A shares on a quarterly basis approximately eight years after purchase. Class C shares are sold with a contingent deferred sales charge of 1%, if redeemed during the first 12 months. The investment objective of the Fund is to seek a high level of current interest income exempt from federal income tax and certain Pennsylvania state and local taxes, consistent with the preservation of capital. 1. Significant Accounting Policies The following accounting policies are in accordance with U.S. generally accepted accounting principles and are consistently followed by the Fund. Security Valuation - Long-term debt securities are valued by an independent pricing service and such prices are believed to reflect the fair value of such securities. Short-term debt securities having less than 60 days to maturity are valued at amortized cost, which approximates market value. Other securities and assets for which market quotations are not readily available are valued at fair value as determined in good faith under the direction of the Fund's Board of Trustees. In determining whether market quotations are readily available or fair valuation will be used, various factors will be taken into consideration, such as market closures, aftermarket trading or significant events after local market trading (e.g., government actions or pronouncements, trading volume or volatility on markets, exchanges among dealers, or news events). Federal Income Taxes - The Fund intends to continue to qualify for federal income tax purposes as a regulated investment company and make the requisite distributions to shareholders. Accordingly, no provision for federal income taxes has been made in the financial statements. On July 13, 2006, the Financial Accounting Standards Board (FASB) released FASB Interpretation No. 48 "Accounting for Uncertainty in Income Taxes" (FIN 48). FIN 48 provides guidance for how uncertain tax positions should be recognized, measured, presented, and disclosed in the financial statements. FIN 48 requires the evaluation of tax positions taken or expected to be taken in the course of preparing the Fund's tax returns to determine whether the tax positions are "more-likely-than-not" of being sustained by the applicable tax authority. Tax positions not deemed to meet the more-likely-than-not threshold would be recorded as a tax benefit or expense in the current year. Adoption of FIN 48 is required for fiscal years beginning after December 15, 2006 and is to be applied to all open tax years as of the effective date. Although the Fund's tax positions are currently being evaluated, managment does not expect the adoption of FIN 48 to have a material impact on the Fund's financial statements. Class Accounting - Investment income and common expenses are allocated to the classes of the Fund on the basis of "settled shares" of each class in relation to the net assets of the Fund. Realized and unrealized gain (loss) on investments are allocated to the various classes of the Fund on the basis of daily net assets of each class. Distribution expenses relating to a specific class are charged directly to that class. Use of Estimates - The preparation of financial statements in conformity with U.S. generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of 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. Other - Expenses directly attributable to a Fund are charged directly to that Fund. Other expenses common to various funds within the Delaware Investments (R) Family of Funds are generally allocated amongst such funds on the basis of average net assets. Management fees and some other expenses are paid monthly. Security transactions are recorded on the date the securities are purchased or sold (trade date) for financial reporting purposes. Costs used in calculating realized gains and losses on the sale of investment securities are those of the specific securities sold. Interest income is recorded on the accrual basis. Discounts and premiums are amortized to interest income over the lives of the respective securities. The Fund declares dividends daily from net investment income and pays such dividends monthly and declares and pays distributions from net realized gain on investments, if any, annually. The Fund receives earnings credits from its custodian when positive cash balances are maintained, which are used to offset custody fees. The expense paid under the above arrangement is included in custodian fees on the Statement of Operations with the corresponding expense offset shown as "expense paid indirectly." 2. Investment Management, Administration Agreements and Other Transactions with Affiliates In accordance with the terms of its investment management agreement, the Fund pays Delaware Management Company (DMC), a series of Delaware Management Business Trust and the investment manager, an annual fee which is calculated daily at the rate of 0.55% on the first $500 million of average daily net assets of the Fund, 0.50% on the next $500 million, 0.45% on the next $1.5 billion, and 0.425% on average daily net assets in excess of $2.5 billion. Effective July 1, 2006, DMC has contractually agreed to waive that portion, if any, of its management fee and reimburse the Fund to the extent necessary to ensure that annual operating expenses, exclusive of taxes, interest, brokerage commissions, distribution fees, certain insurance costs and extraordinary expenses, do not exceed 0.67% of average daily net assets of the Fund through June 30, 2007. Prior to July 1, 2006, no expense waiver was in effect. Delaware Service Company, Inc. (DSC), an affiliate of DMC, provides accounting, administration, dividend disbursing and transfer agent services. The Fund pays DSC a monthly fee computed at the annual rate of 0.04% of the Fund's average daily net assets for accounting and administration services. The Fund pays DSC a monthly fee based on the number of shareholder accounts for dividend disbursing and transfer agent services. (continues) 13 Notes to financial statements Delaware Tax-Free Pennsylvania Fund 2. Investment Management, Administration Agreements and Other Transactions with Affiliates (continued) Pursuant to a distribution agreement and distribution plan, the Fund pays Delaware Distributors, L.P. (DDLP), the distributor and an affiliate of DMC, an annual distribution and service fee not to exceed 0.30% of the average daily net assets of the Class A shares and 1.00% of the average daily net assets of the Class B and C shares. The Board of Trustees has adopted a formula for calculating 12b-1 plan fees for the Fund's Class A shares that went into effect on June 1, 1992. The total 12b-1 fees to be paid by Class A shareholders of the Fund will be the sum of 0.10% of the average daily net assets representing shares that were acquired prior to June 1, 1992 and 0.30% of the average daily net assets representing shares that were acquired on or after June 1, 1992. All Class A shareholders will bear 12b-1 fees at the same rate, the blended rate based upon the allocation of the 0.10% and 0.30% rates described above. DDLP has contracted to waive distribution and service fees through June 30, 2007 in order to prevent distribution and service fees of Class A shares from exceeding 0.25% of average daily net assets. This contractual waiver is applied to the shares of the Fund that were acquired on or after June 1, 1992 in calculating the applicable 12b-1 fee rate. At August 31, 2006, the Fund had liabilities payable to affiliates as follows: Investment management fees payable to DMC $255,732 Dividend disbursing, transfer agent, accounting and administration fees and other expenses payable to DSC 49,103 Distribution fees payable to DDLP 127,885 Other expenses payable to DMC and affiliates* 26,419 * DMC, as part of its administrative services, pays operating expenses on behalf of the Fund and is reimbursed on a periodic basis. Such expenses include items such as printing of shareholder reports, fees for audit, legal and tax services, registration fees and trustees' fees. As provided in the investment management agreement, the Fund bears the cost of certain legal services, including internal legal services provided to the Fund by DMC employees. For the six months ended August 31, 2006, the Fund was charged $12,788 for internal legal services provided by DMC. For the six months ended August 31, 2006, DDLP earned $21,158 for commissions on sales of the Fund's Class A shares. For the six months ended August 31, 2006, DDLP received gross contingent deferred sales charge commissions of $7,388, $9,077 and $498 on redemption of the Fund's Class A, Class B and Class C shares, respectively, and these commissions were entirely used to offset up-front commissions previously paid by DDLP to broker-dealers on sales of those shares. Certain officers of DMC, DSC and DDLP are officers and/or trustees of the Trust. These officers and trustees are paid no compensation by the Fund. 3. Investments For the six months ended August 31, 2006, the Fund made purchases of $28,000,900 and sales of $30,159,109 of investment securities other than short-term investments. At August 31, 2006, the cost of investments for federal income tax purposes has been estimated since the final tax characteristics cannot be determined until fiscal year end. At August 31, 2006, the cost of investments was $539,316,892 At August 31, 2006, net unrealized appreciation was $36,256,319, of which $36,450,849 related to unrealized appreciation of investments and $194,530 related to unrealized depreciation of investments. 4. Dividend and Distribution Information Income and long-term capital gain distributions are determined in accordance with federal income tax regulations, which may differ from U.S. generally accepted accounting principles. Additionally, net short-term gains on sales of investment securities are treated as ordinary income for federal income tax purposes. The tax character of dividends and distributions paid during the six months ended August 31, 2006 and the year ended February 28, 2006 was as follows: Six Months Year Ended Ended 8/31/06* 2/28/06 ___________ ___________ Tax-exempt income $12,338,885 $25,984,710 * Tax information for the six months ended August 31, 2006 is an estimate and the tax character of dividends and distributions may be redesignated at fiscal year end. The components of net assets are estimated since final tax characteristics cannot be determined until fiscal year end. As of August 31, 2006, the estimated components of net assets on a tax basis were as follows: Shares of beneficial interest $565,813,731 Six month period realized gains 260,434 Capital loss carryforwards (18,994,533) Unrealized appreciation of investments 36,256,319 ____________ Net assets $583,335,951 ____________ The difference between book basis and tax basis components of net assets are primarily attributable to tax deferral of losses on wash sales. For federal income tax purposes, capital loss carryforwards may be carried forward and applied against future capital gains. Capital loss carryforwards remaining at February 28, 2006 will expire as follows: $9,193,068 expires in 2008, $8,323,306 expires in 2009, $1,161,652 expires in 2010 and $316,507 expires in 2014. For the six months ended August 31, 2006, the Fund had capital gains of $260,434 which may reduce the capital loss carryforwards. 14 5. Capital Shares Transactions in capital shares were as follows: Six Months Year Ended Ended 8/31/06 2/28/06 Shares sold: Class A 2,004,047 2,053,783 Class B 13,795 109,469 Class C 56,493 214,354 Shares issued upon reinvestment of dividends and distributions: Class A 880,246 1,808,881 Class B 19,202 45,977 Class C 13,541 23,752 __________ __________ 2,987,324 4,256,216 __________ __________ Shares repurchased: Class A (3,793,942) (7,136,054) Class B (478,746) (819,201) Class C (22,062) (100,096) __________ __________ (4,294,750) (8,055,351) __________ __________ Net decrease (1,307,426) (3,799,135) __________ __________ For the six months ended August 31, 2006 and the year ended February 28, 2006, 255,959 Class B shares were converted to 255,959 Class A shares valued at $2,049,010 and 522,668 Class B shares were converted to 522,449 Class A shares valued at $4,249,239, respectively. The respective amounts are included in Class B redemptions and Class A subscriptions in the table above and the Statements of Changes in Net Assets. 6. Line of Credit The Fund, along with certain other funds in the Delaware Investments(R) Family of Funds (the "Participants"), participates in a $225,000,000 revolving line of credit facility to be used for temporary or emergency purposes as an additional source of liquidity to fund redemptions of investor shares. The Participants are charged an annual commitment fee, which is allocated across the Participants on the basis of each Participant's allocation of the entire facility. The Participants may borrow up to a maximum of one third of their net assets under the agreement. The Fund had no amounts outstanding as of August 31, 2006, or at any time during the period then ended. 7. Credit and Market Risk The Fund concentrates its investments in securities issued by Pennsylvania municipalities. The value of these investments may be adversely affected by new legislation within Pennsylvania, regional or local economic conditions, and differing levels of supply and demand for municipal bonds. Many municipalities insure repayment for their obligations. Although bond insurance reduces the risk of loss due to default by an issuer, such bonds remain subject to the risk that market value may fluctuate for other reasons and there is no assurance that the insurance company will meet its obligations. These securities have been identified in the Statement of Net Assets. The Fund may invest in inverse floating rate securities ("inverse floaters"), a type of derivative tax-exempt obligation with floating or variable interest rates that move in the opposite direction of short-term interest rates, usually at an accelerated speed. Consequently, the market values of inverse floaters will generally be more volatile than other tax-exempt investments. Such securities are identified on the Statement of Net Assets. The Fund may invest in advanced refunded bonds, escrow secured bonds or defeased bonds. Under current federal tax laws and regulations, state and local government borrowers are permitted to refinance outstanding bonds by issuing new bonds. The issuer refinances the outstanding debt to either reduce interest costs or to remove or alter restrictive covenants imposed by the bonds being refinanced. A refunding transaction where the municipal securities are being refunded within 90 days or less from the issuance of the refunding issue is known as a "current refunding". "Advance refunded bonds" are bonds in which the refunded bond issue remains outstanding for more than 90 days following the issuance of the refunding issue. In an advance refunding, the issuer will use the proceeds of a new bond issue to purchase high grade interest bearing debt securities which are then deposited in an irrevocable escrow account held by an escrow agent to secure all future payments of principal and interest and bond premium of the advance refunded bond. Bonds are "escrowed to maturity" when the proceeds of the refunding issue are deposited in an escrow account for investment sufficient to pay all of the principal and interest on the original interest payment and maturity dates. Bonds are considered "pre-refunded" when the refunding issue's proceeds are escrowed only until a permitted call date or dates on the refunded issue with the refunded issue being redeemed at the time, including any required premium. Bonds become "defeased" when the rights and interests of the bondholders and of their lien on the pledged revenues or other security under the terms of the bond contract are substituted with an alternative source of revenues (the escrow securities) sufficient to meet payments of principal and interest to maturity or to the first call dates. Escrowed secured bonds will often receive a rating of AAA from Moody's Investor's Service, Inc., Standard & Poor's Ratings Group, and/ or Fitch Ratings due to the strong credit quality of the escrow securities and the irrevocable nature of the escrow deposit agreement. The Fund may invest up to 10% of its total assets in illiquid securities, which may include securities with contractual restrictions on resale, securities exempt from registration under Rule 144A of the Securities Act of 1933, as amended, and other securities which may not be readily marketable. The relative illiquidity of these securities may impair the Fund from disposing of them in a timely manner and at a fair price when it is necessary or desirable to do so. While maintaining oversight, the Fund's Board of Trustees has delegated to DMC the day-to-day functions of determining whether individual securities are liquid for purposes of the Fund's limitation on investments in illiquid assets. At August 31, 2006, there were no Rule 144A securities and no securities have been determined to be illiquid under the Fund's Liquidity Procedures. 8. Contractual Obligations The Fund enters into contracts in the normal course of business that contain a variety of indemnifications. The Fund's maximum exposure under these arrangements is unknown. However, the Fund has not had prior claims or losses pursuant to these contracts. Management has reviewed the Fund's existing contracts and expects the risk of loss to be remote. 15 Other Fund information Delaware Tax-Free Pennsylvania Fund Board Consideration of Delaware Tax-Free Pennsylvania Fund Investment Advisory Agreement At a meeting held on May 17-18, 2006 (the "Annual Meeting"), the Board of Trustees, including a majority of disinterested or independent Trustees, approved the renewal of the Investment Advisory Agreement for the Delaware Tax-Free Pennsylvania Fund (the "Fund"). In making its decision, the Board considered information furnished throughout the year at regular Board meetings, as well as information prepared specifically in connection with the Annual Meeting. Information furnished and discussed throughout the year included reports detailing Fund performance, investment strategies, expenses, compliance matters and other services provided by Delaware Management Company ("DMC"), the investment advisor. Information furnished specifically in connection with the Annual Meeting included materials provided by DMC and its affiliates ("Delaware Investments") concerning, among other things, the level of services provided to the Fund, the costs of such services to the Fund, economies of scale and the financial condition and profitability of Delaware Investments. In addition, in connection with the Annual Meeting, the Board considered independent historical and comparative reports prepared by Lipper Inc. ("Lipper"), an independent statistical compilation organization. The Board also considered industry comparative information presented by representatives from Lipper. The Lipper reports compared the Fund's investment performance and expenses with those of other comparable mutual funds. The Board also received certain supplemental information regarding management's policy with respect to advisory fee levels and its philosophy with respect to breakpoints; the structure of portfolio manager compensation; and any constraints or limitations on the availability of securities in certain investment styles which might inhibit DMC's ability to fully invest in accordance with Fund policies. In considering such materials, the independent Trustees received assistance and advice from and met separately with independent counsel and representatives from Lipper. At the meeting with representatives from Lipper, Mr. Driscoll, then Chairman of the Delaware Investments Family of Funds, and Chairman and Chief Executive Officer of the investment advisor, was present to respond to questions by Lipper and the independent Trustees. While the Board considered the Investment Advisory Agreements for all of the funds in the Delaware Investments Family of Funds at the same Board meeting, information was provided and considered by the Board for each fund individually. In approving the continuance of the Investment Advisory Agreement for the Fund, the Board, including a majority of independent Trustees, determined that the existing advisory fee structure was fair and reasonable and that the continuance of the Investment Advisory Agreement was in the best interests of the Fund and its shareholders. While attention was given to all information furnished, the following discusses the primary factors relevant to the Board's deliberations and determination, including those relating to the selection of the investment advisor and the approval of the advisory fee. Nature, Extent and Quality Of Service. Consideration was given to the services provided by Delaware Investments to the Fund and its shareholders. In reviewing the nature, extent and quality of services, the Board emphasized reports furnished to it throughout the year at regular Board meetings covering matters such as the relative performance of the Fund, compliance of portfolio managers with the investment policies, strategies and restrictions for the Fund, the compliance of management personnel with the Code of Ethics adopted throughout the Delaware Investments Family of Funds complex, the adherence to fair value pricing procedures as established by the Board and the accuracy of net asset value calculations. The Board noted that it was pleased with the current staffing of the Fund's investment advisor and management's efforts to strengthen and deepen portfolio management teams during the past year, the emphasis on research and the compensation system for advisory personnel. Favorable consideration was given to DMC's efforts to maintain, and in some instances increase, financial and human resources committed to fund matters. Other factors taken into account by the Board were Delaware Investments' preparedness for, and response to, legal and regulatory matters. The Board also considered the transfer agent and shareholder services provided to Fund shareholders by Delaware Investments' affiliate, Delaware Service Company, Inc. ("DSC"), noting DSC's commitment to maintain a high level of service in keeping with its past receipt of the DALBAR Pyramid Award, and the continuing expenditures by Delaware Investments to improve the delivery of shareholder services. Additionally, the Board noted the extent of benefits provided to Fund shareholders for being part of the Delaware Investments Family of Funds, including the privilege to exchange investments between the same class of shares of funds without a sales charge, the ability to reinvest Fund dividends into other funds and the privilege to combine holdings in other funds to obtain a reduced sales charge. The Board was satisfied with the nature, extent and quality of the overall services provided by Delaware Investments. Investment Performance. The Board considered the investment performance of DMC and the Fund. The Board was pleased with DMC's investment performance. The Board placed significant emphasis on the investment performance of the Fund in view of its importance to shareholders. While consideration was given to performance reports and discussions with portfolio managers at Board meetings throughout the year, particular weight was given to the Lipper reports furnished for the Annual Meeting. The Lipper reports prepared for the Fund showed the investment performance of its Class A shares in comparison to a group of similar funds as selected by Lipper (the "Performance Universe"). A fund with the best performance is ranked first, and a fund with the poorest performance is ranked last. The highest/best performing 25% of funds in the Performance Universe make up the first quartile; the next 25% - the second quartile; the next 25% - the third quartile; and the poorest/worst performing 25% of funds in the Performance Universe make up the fourth quartile. Comparative annualized performance for the Fund was shown for the past one, three, five and 10 year periods ended January 31, 2006. The Board noted its objective that the Fund's performance for the periods considered be at or above the median of its Performance Universe. The following paragraph summarizes the performance results for the Fund and the Board's view of such performance. 16 Other Fund information Board Consideration of Delaware Tax-Free Pennsylvania Fund Investment Advisory Agreement (continued) The Performance Universe for the Fund consisted of the Fund and all retail and institutional Pennsylvania municipal debt funds as selected by Lipper. The Lipper report comparison showed that the Fund's total return for the one, three and five year periods was in the first quartile of such Performance Universe. The report further showed that the Fund's total return for the 10 year period was in the second quartile. The Board was satisfied with such performance. Comparative Expenses. The Board considered expense data for the Delaware Investments Family of Funds. Management provided the Board with information on pricing levels and fee structures for the Fund. The Board focused particularly on the comparative analysis of the management fees and total expense ratios of the Fund and the management fees and expense ratios of a group of similar funds as selected by Lipper (the "Expense Group"). In reviewing comparative costs, the Fund's contractual management fee and the actual management fee incurred by the Fund were compared with the contractual management fees (assuming all funds in the Expense Group were similar in size to the Fund) and actual management fees (as reported by each fund) of other funds within the Expense Group, taking into effect any applicable breakpoints and fee waivers. The Fund's total expenses were also compared with those of its Expense Group. The Lipper total expenses, for comparative consistency, were shown by Lipper for Class A shares and compared total expenses including 12b-1 and non-12b-1 service fees. The Board also considered fees paid to Delaware Investments for non-management services. The Board noted its objective to limit the Fund's total expense ratio to an acceptable range as compared to the median of the Expense Group. The following paragraph summarizes the expense results for the Fund and the Board's view of such expenses. The expense comparisons for the Fund showed that its actual management fee and total expenses were in the quartile with the second highest expenses of its Expense Group. The Board noted that the Fund's total expenses were not in line with the Board's objective. In evaluating the total expenses, the Board considered recent initiatives implemented by management, such as the outsourcing of certain transfer agency services, creating an opportunity for a reduction in expenses. The Board was satisfied with management's efforts to improve the Fund's total expense ratio and bring it in line with the Board's objective. Management Profitability. The Board considered the level of profits, if any, realized by Delaware Investments in connection with the operation of the Fund. In this respect, the Board reviewed the Investment Management Profitability Analysis that addressed the overall profitability of Delaware Investments' business in providing management and other services to each of the individual funds and the Delaware Investments Family of Funds as a whole. Specific attention was given to the methodology followed in allocating costs for the purpose of determining profitability. Management stated that the level of profits of Delaware Investments, to a certain extent, reflected operational cost savings and efficiencies initiated by Delaware Investments. The Board considered Delaware Investments' expenditures to improve services provided to fund shareholders and to meet additional regulatory and compliance requirements resulting from recent SEC initiatives. The Board also considered the extent to which Delaware Investments might derive ancillary benefits from fund operations, including the potential for procuring additional business as a result of the prestige and visibility associated with its role as service provider to the Delaware Investments Family of Funds, the benefits from allocation of fund brokerage to improve trading efficiencies and the use of "soft" commission dollars to pay for proprietary and non-proprietary research. The Board did not find that the level of profits realized by Delaware Investments from the relationships with the Fund and the Delaware Investments Family of Funds required negotiation of reduction of fees. Economies of Scale. The Trustees considered whether economies of scale are realized by Delaware Investments as the Fund's assets increase and the extent to which any economies of scale are reflected in the level of management fees charged. The Trustees took into account the standardized advisory fee pricing and structure approved by the Board and shareholders as part of a complex-wide shareholder meeting conducted in 1998/1999. At that time, Delaware Investments introduced breakpoints to account for management economies of scale. The Board noted that the fee under the Fund's management contract fell within the standard structure. The Board also noted that the Fund's assets exceeded the first breakpoint level. The Board believed that, given the extent to which economics of scale might be realized by the advisor and its affiliates, the schedule of fees under the Investment Advisory Agreement provides a sharing of benefits with the Fund and its shareholders. 17 About the organization This semiannual report is for the information of Delaware Tax-Free Pennsylvania Fund shareholders, but it may be used with prospective investors when preceded or accompanied by a current prospectus for Delaware Tax-Free Pennsylvania Fund and the Delaware Investments(R) Performance Update for the most recently completed calendar quarter. The prospectus sets forth details about charges, expenses, investment objectives, and operating policies of the Fund. You should read the prospectus carefully before you invest. The figures in this report represent past results that are not a guarantee of future results. The return and principal value of an investment in the Fund will fluctuate so that shares, when redeemed, may be worth more or less than their original cost. Board of trustees Patrick P. Coyne Chairman, President, and Chief Executive Officer Delaware Investments Family of Funds Philadelphia, PA Thomas L. Bennett Private Investor Rosemont, PA John A. Fry President Franklin & Marshall College Lancaster, PA Anthony D. Knerr Founder and Managing Director Anthony Knerr & Associates New York, NY Lucinda S. Landreth Former Chief Investment Officer Assurant, Inc. Philadelphia, PA Ann R. Leven Owner - ARL Associates, Strategic Financial Planning Consulting Firm Washington, DC Thomas F. Madison President and Chief Executive Officer MLM Partners, Inc. Minneapolis, MN Janet L. Yeomans Vice President and Treasurer 3M Corporation St. Paul, MN J. Richard Zecher Founder Investor Analytics Scottsdale, AZ Affiliated officers Michael P. Bishof Senior Vice President and Chief Financial Officer Delaware Investments Family of Funds Philadelphia, PA David F. Connor Vice President, Deputy General Counsel, and Secretary Delaware Investments Family of Funds Philadelphia, PA David P. O'Connor Senior Vice President, General Counsel, and Chief Legal Officer Delaware Investments Family of Funds Philadelphia, PA John J. O'Connor Senior Vice President and Treasurer Delaware Investments Family of Funds Philadelphia, PA Contact information Investment manager Delaware Management Company, a series of Delaware Management Business Trust Philadelphia, PA National distributor Delaware Distributors, L.P. Philadelphia, PA Shareholder servicing, dividend disbursing, and transfer agent Delaware Service Company, Inc. 2005 Market Street Philadelphia, PA 19103-7094 For shareholders 800 523-1918 For securities dealers and financial institutions representatives only 800 362-7500 Web site www.delawareinvestments.com Delaware Investments is the marketing name of Delaware Management Holdings, Inc. and its subsidiaries. The Fund files its complete schedule of portfolio holdings with the Securities and Exchange Commission for the first and third quarters of each fiscal year on Form N-Q. The Fund's Forms N-Q, as well as a description of the policies and procedures that the Fund uses to determine how to vote proxies (if any) relating to portfolio securities are available without charge (i) upon request, by calling 800 523-1918; (ii) on the Fund's Web site at http://www.delawareinvestments.com; and (iii) on the Commission's Web site at http://www.sec.gov. The Fund's Forms N-Q may be reviewed and copied at the Commission's Public Reference Room in Washington, D.C.; information on the operation of the Public Reference Room may be obtained by calling 800 SEC-0330. Information (if any) regarding how the Fund voted proxies relating to portfolio securities during the most recently disclosed 12-month period ended June 30 is available without charge (i) through the Fund's Web site at http://www.delawareinvestments.com; and (ii) on the Commission's Web site at http://www.sec.gov. 18 Get shareholder reports and prospectuses online instead of in the mail. > Visit www.delawareinvestments.com/edelivery Simplify your life. Manage your investments online! Get Account Access, the Delaware Investments(R) secure Web site that allows you to conduct your business online. Gain 24-hour access to your account and one of the highest levels of Web security available. You also get: o Hassle-free investing - Make online purchases and redemptions at any time. o Simplified tax processing - Automatically retrieve your Delaware Investments accounts' 1099 information and import it directly into your 1040 tax return. Available only with Turbo Tax(R) Online(SM) and Desktop software - www.turbotax.com. o Less mail clutter - Get instant access to your fund materials online with Delaware eDelivery. Register for Account Access today! Please visit us at www.delawareinvestments.com, select Individual Investors, and click Account Access. Please call our Shareholder Service Center at 800 523-1918 Monday through Friday from 8:00 a.m. to 7:00 p.m., Eastern Time, for assistance with any questions. [DELAWARE INVESTMENTS LOGO] (908) Printed in the USA SA-007 [8/06] CGI 10/06 MF-06-09-022 PO11255 <page> Item 2. Code of Ethics Not applicable. Item 3. Audit Committee Financial Expert Not applicable. Item 4. Principal Accountant Fees and Services Not applicable. Item 5. Audit Committee of Listed Registrants Not applicable. Item 6. Schedule of Investments Included as part of report to shareholders filed under Item 1 of this Form N-CSR. 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 Companies and Affiliated Purchasers Not applicable. Item 10. Submission of Matters to a Vote of Security Holders Not applicable. Item 11. Controls and Procedures The registrant's principal executive officer and principal financial officer have evaluated the registrant's disclosure controls and procedures within 90 days of the filing of this report and have concluded that they are effective in providing reasonable assurance that the information required to be disclosed by the registrant in its reports or <page> statements filed under the Securities Exchange Act of 1934 is recorded, processed, summarized and reported within the time periods specified in the rules and forms of the Securities and Exchange Commission. There were no significant changes in the registrant's internal control over financial reporting that occurred during the second fiscal quarter of the period covered by the report to stockholders included herein (i.e., the registrant's second fiscal quarter) that have materially affected, or are reasonably likely to materially affect, the registrant's internal control over financial reporting. Item 12. Exhibits (a) (1) Code of Ethics Not applicable. (2) Certifications of Principal Executive Officer and Principal Financial Officer pursuant to Rule 30a-2 under the Investment Company Act of 1940 are attached hereto as Exhibit 99.CERT. (3) Written solicitations to purchase securities pursuant to Rule 23c-1 under the Securities Exchange Act of 1934. Not applicable. (b) Certifications pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 are furnished herewith as Exhibit 99.906CERT. 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. Name of Registrant: Delaware Group State Tax Free Income Trust PATRICK P. COYNE ________________________________ By: Patrick P. Coyne _________________________ Title: Chief Executive Officer Date: November 6, 2006 <page> Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated. PATRICK P. COYNE ________________________________ By: Patrick P. Coyne _________________________ Title: Chief Executive Officer Date: November 6, 2006 RICHARD SALUS ________________________________ By: Richard Salus _________________________ Title: Chief Financial Officer Date: November 6, 2006