As filed with the Securities and Exchange Commission on February 15, 2002

                           SCHEDULE 14A INFORMATION
PROXY STATEMENT PURSUANT TO SECTION 14(A) OF THE SECURITIES EXCHANGE ACT OF 1934

Filed by the Registrant /X/
Filed by a Party other than the Registrant / /



                                                  
Check the appropriate box:
/ / Preliminary Proxy Statement                      / /Confidential, For Use of the Commission Only (as
                                                        permitted by Rule 14a-6(e)(2))
/ / Definitive Proxy Statement
/X/ Definitive Additional Materials
/ / Soliciting Material Under Rule 14a-12


                  Merrill Lynch Arizona Municipal Bond Fund,
                Merrill Lynch Connecticut Municipal Bond Fund,
                 Merrill Lynch Maryland Municipal Bond Fund,
               Merrill Lynch Massachusetts Municipal Bond Fund,
                 Merrill Lynch Michigan Municipal Bond Fund,
                 Merrill Lynch Minnesota Municipal Bond Fund,
              Merrill Lynch North Carolina Municipal Bond Fund,
                   Merrill Lynch Ohio Municipal Bond Fund,
                   Merrill Lynch Texas Municipal Bond Fund,
       each a series of Merrill Lynch Multi-State Municipal Series Trust
                P.O. Box 9011 Princeton, New Jersey 08543-9011
- ------------------------------------------------------------------------------
               (Name of Registrants as Specified In Its Charter)
                                 SAME AS ABOVE
- ------------------------------------------------------------------------------
   (Name of Person(s) Filing Proxy Statement, if Other Than the Registrant)

Payment of Filing Fee (Check the appropriate box):
/X / No fee required.
/ / Fee computed on table below per Exchange Act Rules 14a-6(i)(1) and 0-11.

(1) Title of each class of securities to which transaction applies:
_______________________________________________________________________________
(2) Aggregate number of securities to which transaction applies:
_______________________________________________________________________________
(3) Per unit price or other underlying value of transaction computed pursuant
to Exchange Act Rule 0-11 (set forth the amount on which the filing fee is
calculated and state how it was determined):
_______________________________________________________________________________
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_______________________________________________________________________________
(5) Total fee paid:
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 / / Fee paid previously with preliminary materials:

/ / Check box if any part of the fee is offset as provided by Exchange Act
Rule 0-11(a)(2) and identify the filing for which the offsetting fee was paid
previously. Identify the previous filing by registration statement number, or
the form or schedule and the date of its filing.

(1) Amount previously paid:
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_______________________________________________________________________________
(4) Date Filed:



                   MERRILL LYNCH ARIZONA MUNICIPAL BOND FUND
                 MERRILL LYNCH CONNECTICUT MUNICIPAL BOND FUND
                  MERRILL LYNCH MARYLAND MUNICIPAL BOND FUND
                MERRILL LYNCH MASSACHUSETTS MUNICIPAL BOND FUND
                  MERRILL LYNCH MICHIGAN MUNICIPAL BOND FUND
                  MERRILL LYNCH MINNESOTA MUNICIPAL BOND FUND
               MERRILL LYNCH NORTH CAROLINA MUNICIPAL BOND FUND
                    MERRILL LYNCH OHIO MUNICIPAL BOND FUND
                    MERRILL LYNCH TEXAS MUNICIPAL BOND FUND
       EACH A SERIES OF MERRILL LYNCH MULTI-STATE MUNICIPAL SERIES TRUST


Dear Shareholder:

     As a shareholder of one of the series of Merrill Lynch Multi-State
Municipal Series Trust ("Municipal Series Trust") listed above (each, a "State
Fund" and collectively, the "State Funds"), you are being asked to consider
the following:

     (1) the election of the Board of Trustees of Municipal Series Trust; and

     (2) the acquisition of your fund by the National Portfolio (the "National
Portfolio"), a series of Merrill Lynch Municipal Bond Fund, Inc. ("Municipal
Bond Fund").

     Each acquisition of a State Fund by the National Portfolio is
individually referred to as a "State Fund Acquisition," and the State Fund
Acquisitions are collectively referred to as the "Reorganization." The
following chart outlines the Reorganization structure.



- ------------------------------------------------------- --------------------------------------------------------------
                    Surviving Fund                                             Acquired Funds

- ------------------------------------------------------- --------------------------------------------------------------
                                                     
                                                        Merrill Lynch Arizona Municipal Bond Fund
                                                        Merrill Lynch Connecticut Municipal Bond Fund
                                                        Merrill Lynch Maryland Municipal Bond Fund
                                                        Merrill Lynch Massachusetts Municipal Bond Fund
The National Portfolio of                               Merrill Lynch Michigan Municipal Bond Fund
Merrill Lynch Municipal Bond Fund, Inc.                 Merrill Lynch Minnesota Municipal Bond Fund
                                                        Merrill Lynch North Carolina Municipal Bond Fund
                                                        Merrill Lynch Ohio Municipal Bond Fund
                                                        Merrill Lynch Texas Municipal Bond Fund
- ------------------------------------------------------- --------------------------------------------------------------


         On March 18, 2002, your State Fund will hold a Special Meeting of
Shareholders to elect the Board of Trustees of Municipal Series Trust and to
consider your State Fund Acquisition. A joint proxy statement and prospectus,
which provides information about the election of the Board



of Trustees and each State Fund Acquisition, is enclosed along with a Question
and Answer Sheet that addresses frequently asked questions.

     You are being asked to elect a Board of Trustees of Municipal Series
Trust to serve until their successors have been duly elected and qualified or
until their earlier resignation or removal.

     You are also being asked to approve the Agreement and Plan of
Reorganization (the "Agreement and Plan") whereby the National Portfolio will
acquire substantially all of the assets, and assume substantially all of the
liabilities, of each State Fund and will simultaneously distribute to each
State Fund newly-issued shares of the National Portfolio. These shares will
then be distributed to the shareholders of each participating State Fund on a
proportionate basis. The shares of the National Portfolio that you receive
will be the same class as the shares you held in your State Fund immediately
prior to the applicable State Fund Acquisition. You should note that the
shares of the National Portfolio differ from those of the State Funds in that
the account maintenance fees for Class D shares of the National Portfolio are
higher than the account maintenance fees for Class D shares of each State
Fund, and the distribution fees for Class B and Class C shares of the National
Portfolio are higher than the distribution fees for Class B and Class C shares
of each State Fund. When a State Fund Acquisition is completed, the
participating State Fund will be terminated as a series of Municipal Series
Trust.

     The investment objectives of each State Fund and the National Portfolio
are similar; however, they differ with respect to the tax-exempt nature of the
income paid to their respective shareholders. The investment objective of each
State Fund is to provide shareholders with income exempt from Federal income
taxes, the designated state's personal income taxes (where applicable) and, in
certain instances, the designated state's corporate income tax, local personal
income taxes, local personal property taxes and/or state intangible personal
property taxes. The investment objective of the National Portfolio is to
provide shareholders with as high a level of income exempt from Federal income
taxes as is consistent with its investment policies.

     The Board of Trustees of Municipal Series Trust believes each State Fund
Acquisition is in the best interests of each State Fund and its shareholders.
It encourages shareholders to vote FOR the applicable State Fund Acquisition
after carefully reviewing the enclosed materials. The Board of Trustees also
recommends that you vote FOR the election of the Trustee nominees.

     YOUR VOTE IS IMPORTANT. Please take a moment now to sign, date and return
your proxy card in the enclosed postage paid return envelope. If you have been
provided with the opportunity on your proxy card or voting instruction form to
provide voting instructions via telephone or the internet, you may take
advantage of these voting options. If we do not hear from you after a
reasonable amount of time, you may receive a telephone call from our proxy
solicitor, Georgeson Shareholder, reminding you to vote your shares.



                                      2



     If you have any questions regarding the enclosed proxy material or need
assistance in voting your shares, please contact Georgeson Shareholder, at
1-866-515-0324.

                                           Sincerely,


                                           Alice P. Pellegrino
                                           Secretary of
                                           Merrill Lynch Multi-State Municipal
                                           Series Trust

Enclosure



                                      3



     In this Question and Answer Sheet, we will refer to funds involved in the
Reorganization as follows:



- ------------------------------------------------------------ ---------------------------------------------------------
Fund Name                                                    Abbreviation
- ------------------------------------------------------------ ---------------------------------------------------------
                                                          
Merrill Lynch Municipal Bond Fund, Inc.                      Municipal Bond Fund
- ------------------------------------------------------------ ---------------------------------------------------------
The National Portfolio                                       National Portfolio or the Surviving Fund
- ------------------------------------------------------------ ---------------------------------------------------------
Merrill Lynch Multi-State Municipal Series Trust             Municipal Series Trust
- ------------------------------------------------------------ ---------------------------------------------------------
Merrill Lynch Arizona Municipal Bond Fund                    Arizona Fund
- ------------------------------------------------------------ ---------------------------------------------------------
Merrill Lynch Connecticut Municipal Bond Fund                Connecticut Fund
- ------------------------------------------------------------ ---------------------------------------------------------
Merrill Lynch Maryland Municipal Bond Fund                   Maryland Fund
- ------------------------------------------------------------ ---------------------------------------------------------
Merrill Lynch Massachusetts Municipal Bond Fund              Massachusetts Fund
- ------------------------------------------------------------ ---------------------------------------------------------
Merrill Lynch Michigan Municipal Bond Fund                   Michigan Fund
- ------------------------------------------------------------ ---------------------------------------------------------
Merrill Lynch Minnesota Municipal Bond Fund                  Minnesota Fund
- ------------------------------------------------------------ ---------------------------------------------------------
Merrill Lynch North Carolina Municipal Bond Fund             North Carolina Fund
- ------------------------------------------------------------ ---------------------------------------------------------
Merrill Lynch Ohio Municipal Bond Fund                       Ohio Fund
- ------------------------------------------------------------ ---------------------------------------------------------
Merrill Lynch Texas Municipal Bond Fund                      Texas Fund
- ------------------------------------------------------------ ---------------------------------------------------------


Q.   Why am I receiving this proxy statement and prospectus?

A.   As a shareholder of the Arizona Fund, the Connecticut Fund, the Maryland
     Fund, the Massachusetts Fund, the Michigan Fund, the Minnesota Fund, the
     North Carolina Fund, the Ohio Fund, or the Texas Fund (each, a "State
     Fund" and collectively, the "State Funds"), each a series of Municipal
     Series Trust, you are being asked to do the following:

     (1) Vote on the election of the Board of Trustees of Municipal Series
     Trust.

     (2) Approve or disapprove an Agreement and Plan of Reorganization (the
     "Agreement and Plan") between Municipal Bond Fund and Municipal Series
     Trust under which the National Portfolio, a series of Municipal Bond
     Fund, will acquire substantially all of the assets, and will assume
     substantially all of the liabilities, of your State Fund in return for an
     equal aggregate value of newly-issued shares of the National Portfolio.
     Such shares will then be distributed on a proportionate basis to
     shareholders of such State



     Fund. Each transaction is referred to as a "State Fund Acquisition." The
     State Fund Acquisitions are collectively referred to as the
     "Reorganization."

     Each State Fund Acquisition requires the approval of the shareholders of
     the applicable State Fund as described below. The election of the Board
     of Trustees requires the approval of the shareholders of all of the
     series of Municipal Series Trust, which includes each State Fund, as well
     as Merrill Lynch Florida Municipal Bond Fund (the "Florida Fund"),
     Merrill Lynch New Jersey Municipal Bond Fund (the "New Jersey Fund"),
     Merrill Lynch New York Municipal Bond Fund (the "New York Fund"), and
     Merrill Lynch Pennsylvania Municipal Bond Fund (the "Pennsylvania Fund")
     (each, a "Series") as described below.

Q.   Who is receiving this proxy statement and prospectus?

A.   Shareholders of each State Fund are receiving this proxy statement and
     prospectus.

     Shareholders of the Florida Fund, the New Jersey Fund, the New York Fund,
     and the Pennsylvania Fund, the other Series of Municipal Series Trust,
     will receive a separate Proxy Statement with respect to the election of
     the Board of Trustees of Municipal Series Trust (Item 1 listed above).
     The vote of the shareholders of the Florida Fund, the New Jersey Fund,
     the New York Fund, and the Pennsylvania Fund is not required with respect
     to the approval or disapproval of the Agreement and Plan (Item 2 listed
     above).

     Shareholders of the National Portfolio are not receiving this proxy
     statement and prospectus because they will not vote on any State Fund
     Acquisition or on the election of Trustees.

Q.   Will there be Shareholders' Meetings?

A.   Yes, a Special Meeting of Shareholders for each State Fund (each, a
     "Meeting" and collectively, the "Meetings") will be held at the offices
     of Fund Asset Management, L.P., 800 Scudders Mill Road, Plainsboro, New
     Jersey, on Monday, March 18, 2002, at the following times:

                State Fund                           Meeting Time
                ----------                           ------------
                Arizona Fund                          9:30 a.m. Eastern time
                Connecticut Fund                     10:00 a.m. Eastern time
                Maryland Fund                        10:30 a.m. Eastern time
                Massachusetts Fund                   11:00 a.m. Eastern time
                Michigan Fund                        11:30 a.m. Eastern time
                Minnesota Fund                       12:00 p.m. Eastern time
                North Carolina Fund                  12:30 p.m. Eastern time
                Ohio Fund                             1:00 p.m. Eastern time
                Texas Fund                            1:30 p.m. Eastern time



                                      2



Q.   Which Fund will be the Surviving Fund and which Funds will be the
     Acquired Funds in the Reorganization?

A.   The National Portfolio will be the Surviving Fund and each State Fund
     that participates in a State Fund Acquisition will be an Acquired Fund.

Q.   Will a State Fund Acquisition change my privileges as a shareholder?

A.   Your rights as a shareholder will not change in any substantial way as a
     result of a State Fund Acquisition. In addition, the shareholder services
     available to you after a State Fund Acquisition will be substantially the
     same as the shareholder services currently available to you.

Q.   As an owner of shares of a State Fund, will I own the same class of
     shares of the National Portfolio after a State Fund Acquisition as I
     currently own?

A.   Yes. The shares of the National Portfolio that you receive in a State
     Fund Acquisition will be the same class as the shares you currently own
     in your State Fund. For example, if you own Class B shares of the Arizona
     Fund, you will receive Class B shares of the National Portfolio as a
     result of a State Fund Acquisition.

     Note that the shares of the National Portfolio differ from those of the
     State Funds in that the account maintenance fees for Class D shares of
     the National Portfolio are higher than the account maintenance fees for
     Class D shares of each State Fund, and the distribution fees for Class B
     and Class C shares of the National Portfolio are higher than the
     distribution fees for Class B and Class C shares of each State Fund. Fund
     Asset Management, L.P. ("FAM"), the manager of each State Fund and the
     National Portfolio, expects that the expense savings from each State Fund
     Acquisition and the Reorganization will more than offset the higher fees
     that such State Fund shareholders would pay as shareholders of the
     Surviving Fund.

Q.   How is a State Fund Acquisition expected to benefit shareholders?

A.   Shareholders should consider the following:

     o    After any State Fund Acquisition, it is expected that shareholders of
          the applicable State Fund will remain invested in an open-end fund
          with a substantially larger combined asset base;

     o    After any State Fund Acquisition, it is expected that shareholders of
          the applicable State Fund will experience improved economies of scale
          as shareholders of the



                                      3



          Surviving Fund, which should result in reduced operating expenses for
          the Surviving Fund;

     o    After any State Fund Acquisition, it is expected that shareholders of
          the applicable State Fund will benefit from greater flexibility in
          portfolio management as shareholders of the Surviving Fund;

     o    After any State Fund Acquisition, shareholders of the applicable
          State Fund will be invested in a diversified fund; and

     o    After any State Fund Acquisition, shareholders of the applicable
          State Fund can still redeem their shares or exchange them into
          certain other Merrill Lynch mutual funds.

     Note that after any State Fund Acquisition, shareholders of the
     applicable State Fund will no longer own shares that provide income that
     is exempt from state and local taxes; however, it is expected that any
     tax benefits lost will be more than offset by the Surviving Fund's lower
     expected investment advisory fee rate and lower expected total operating
     expense ratio;

Q.   Will a State Fund Acquisition affect the value of my investment?

A.   The value of your investment will not change as a result of a State Fund
     Acquisition.

Q.   As an owner of shares of a State Fund, will I own the same number of
     shares of the National Portfolio after a State Fund Acquisition as I
     currently own?

A.   No. You will receive newly-issued shares of the National Portfolio that
     have the same aggregate net asset value as the shares of the State Fund
     owned by you as of the close of business on the New York Stock Exchange
     on the business day prior to the date on which the applicable State Fund
     Acquisition takes place (the "Valuation Time"). The number of shares you
     receive will depend on the relative net asset values of the shares of the
     applicable State Fund and the National Portfolio as of the Valuation
     Time. For example, assume that you own 10 Class A shares of the Arizona
     Fund. If the net asset value of that Fund's Class A shares as of the
     Valuation Time is $6 per share, and the net asset value of the Class A
     shares of the National Portfolio as of the Valuation Time is $12 per
     share, you will receive 5 Class A shares of the National Portfolio in
     that State Fund Acquisition. The aggregate net asset value of your
     investment will not change in connection with that State Fund
     Acquisition. (10 Arizona Fund Class A shares x $6 = $60; 5 National
     Portfolio Class A shares x $12 = $60).

     Thus, if as of the Valuation Time the net asset value of the shares of
     the National Portfolio is higher than the net asset value of your State
     Fund shares, you will receive fewer shares of the National Portfolio in
     the State Fund Acquisition than you held in your State Fund. On the other
     hand, if as of the Valuation Time the net asset value of the



                                      4



     shares of the National Portfolio is lower than the net asset value of
     your State Fund shares, you will receive a greater number of shares of
     the National Portfolio in the State Fund Acquisition than you held in
     your State Fund. Either way, the aggregate net asset value of your shares
     immediately after the State Fund Acquisition will be the same as it was
     as of the Valuation Time.

Q.   What are the tax consequences for shareholders?

A.   Each State Fund Acquisition is structured as a tax-free transaction so
     that the completion of a State Fund Acquisition itself will not result in
     Federal income tax liability for shareholders of a participating State
     Fund. Each State Fund and the National Portfolio will receive an opinion
     of counsel with respect to the tax-free treatment of the State Fund
     Acquisition.

     The tax consequences associated with an investment in shares of a State
     Fund are substantially similar to the tax consequences associated with an
     investment in shares of the National Portfolio, except that for
     shareholders of a State Fund, dividends received after a State Fund
     Acquisition from the Surviving Fund will not be exempt from applicable
     state and local taxes.

Q.   Who will manage the Surviving Fund after the Reorganization?

A.   FAM serves as the manager for each State Fund and Municipal Bond Fund and
     will be the manager of the Surviving Fund after the Reorganization. The
     current portfolio manager for the National Portfolio is Walter O'Connor
     and it is expected that Mr. O'Connor will continue as portfolio manager
     for the Surviving Fund.

Q.   What will the name of the Surviving Fund be after the Reorganization?

A.   The Surviving Fund's name will be the National Portfolio of Merrill Lynch
     Municipal Bond Fund, Inc.

Q.   Is each State Fund Acquisition a separate transaction?

A.   Yes. Under the Agreement and Plan, the failure of any State Fund
     shareholders to approve the Agreement and Plan will not affect the
     ability of any other State Fund to proceed with its State Fund
     Acquisition. The completion of any State Fund Acquisition is not
     contingent upon the completion of any other State Fund Acquisition. The
     Board of Trustees of Municipal Series Trust and the Board of Directors of
     Municipal Bond Fund may amend the Agreement and Plan to change the terms
     of a State Fund Acquisition at any time prior to the approval thereof by
     the shareholders of the applicable State Fund.

Q.   How will approval of my State Fund Acquisition affect my vote for
     election of the Board of Trustees?



                                      5



A.   Regardless of whether the shareholders of a State Fund approve the
     applicable State Fund Acquisition, the Board of Trustees of Municipal
     Series Trust elected at the Meetings will continue to serve as the
     Trustees of Municipal Series Trust until their successors have been duly
     elected and qualified or until their earlier resignation or removal. If
     the shareholders of a State Fund approve the applicable State Fund
     Acquisition, they will become shareholders of the National Portfolio. The
     Board of Directors of Municipal Bond Fund is responsible for the overall
     supervision of the operations of the National Portfolio.

Q.   Why is my vote important?

A.   A quorum for purposes of each Meeting means one-third of the outstanding
     shares of the applicable State Fund and one-third of the outstanding
     shares of each of Class B, Class C, and Class D shares of the applicable
     State Fund, present at the Meeting in person or by proxy.

     The election of the Board of Trustees of Municipal Series Trust requires
     the affirmative vote of a majority of the shares of each Series of
     Municipal Series Trust represented at the applicable special meeting of
     the Series.

     Approval of a State Fund Acquisition requires: (i) the affirmative vote
     of the shareholders of a State Fund, voting together as a single class,
     representing two-thirds of the outstanding shares entitled to be voted
     thereon, and (ii) the affirmative vote of the shareholders of each of
     Class B, Class C, and Class D shares of a State Fund, voting separately
     as a single class, representing two-thirds of the outstanding Class B,
     Class C, and Class D shares, respectively.

     The Board of Trustees of Municipal Series Trust urges every shareholder
     to vote. Please read all proxy materials thoroughly before casting your
     vote.

Q.   How can I vote?

A.   You may vote by signing, dating and returning your proxy card in the
     enclosed postage-paid envelope. If you have been provided with the
     opportunity on your proxy card or voting instruction form to provide
     voting instructions via telephone or the Internet, please take advantage
     of these voting options. You may also vote in person at the Meeting. If
     you submitted a proxy by mail, by telephone or on the Internet, you may
     withdraw it at the Meeting and then vote in person at the Meeting or you
     may submit a superseding proxy by mail, by telephone or on the Internet.

Q.   Has each State Fund retained a proxy solicitation firm?

A.   Yes, each State Fund has retained Georgeson Shareholder to assist in the
     solicitation of proxies for the Meetings. While each State Fund expects
     most proxies to be returned by



                                      6



     mail, each State Fund may also solicit proxies by telephone, fax,
     telegraph or personal interview.


Q.   What if there are not enough votes to reach a quorum or act on a proposal
     by the date of the Meeting?

A.   In order to ensure that we receive enough votes, we may need to take
     further action. We or our proxy solicitation firm may contact you by mail
     or telephone. Therefore, we encourage shareholders to vote as soon as
     they review the enclosed proxy materials to avoid additional mailings or
     telephone calls. If, by the time scheduled for a Meeting, the required
     quorum of a State Fund's shareholders is not present or if a quorum is
     present but sufficient votes to elect the Board of Trustees of Municipal
     Series Trust or to approve or disapprove the Agreement and Plan are not
     received, the persons named as proxies may propose one or more
     adjournments of the Meeting to permit further solicitation of proxies
     from shareholders.

Q.   What is the Board of Trustees' recommendation?

A.   The Board of Trustees of Municipal Series Trust recommends that
     shareholders vote FOR the election of the Trustee nominees and FOR the
     applicable State Fund Acquisition.