MERRILL LYNCH OREGON MUNICIPAL BOND FUND OF MLMSMST
N-30D, 2000-09-22
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MERRILL LYNCH
OREGON
MUNICIPAL
BOND FUND



FUND LOGO



Annual Report

July 31, 2000



This report is not authorized for use as an offer of sale or a
solicitation of an offer to buy shares of the Fund unless
accompanied or preceded by the Fund's current prospectus. Past
performance results shown in this report should not be considered a
representation of future performance. Investment return and
principal value of shares will fluctuate so that shares, when
redeemed, may be worth more or less than their original cost.
Statements and other information herein are as dated and are subject
to change.


Merrill Lynch Oregon
Municipal Bond Fund
Merrill Lynch Multi-State
Municipal Series Trust
Box 9011
Princeton, NJ
08543-9011



Printed on post-consumer recycled paper



Merrill Lynch Oregon Municipal Bond Fund
July 31, 2000


TO OUR SHAREHOLDERS


The Municipal Market Environment
During the six months ended July 31, 2000, US domestic economic
growth remained robust. After growing at a 4.2% annual rate in 1999,
US domestic economic growth expanded at a 4.8% rate during the first
quarter of 2000 and at a 5.2% rate during the second quarter.
However, despite these significant growth rates, few price measure
indicators have shown any meaningful signs of future price pressures
at the consumer level, despite the lowest unemployment rates since
1970. With few signs of any economic slowdown, the Federal Reserve
Board continued to raise short-term interest rates in February,
March and May 2000. The Federal Reserve Board cited both the
continued growth of US employment and the continued strength of US
equity markets as reasons for attempting to moderate US economic
growth before inflationary price pressures can occur.

However, since then fixed-income markets have largely ignored strong
economic fundamentals and concentrated upon very positive technical
supply factors. Declining bond issuance--both current, and more
importantly, expected future issuance--helped push bond yields lower
into mid-April 2000. In late January and early February 2000, the US
Treasury announced its intention to reduce the amounts to be
auctioned in the quarterly Treasury note and bond auctions.
Furthermore, budgetary surpluses allowed the US Treasury to
repurchase outstanding, higher-couponed Treasury issues, primarily
in the 15-year and longer maturity sector. Both these actions
resulted in significant reduction in the outstanding supply of
longer-dated maturity US Treasury debt. Domestic and international
investors quickly began to accumulate what was expected to become a
scarce commodity and bond prices quickly rose.

By mid-April 2000, US Treasury bond yields had declined more than 80
basis points (0.80%) to 5.67%. During the remainder of the period,
US Treasury bond prices were volatile as strong economic reports and
investors' concerns of additional moves by the Federal Reserve Board
occasionally overshadowed the positive technical position of the
long-term US Treasury bond market.

Recently, a number of economic indicators have begun to suggest that
the actions taken by the Federal Reserve Board in 1999 and early
2000 have started to affect US economic growth. Both new home sales
and consumer spending have slowed, suggesting that economic growth
may subside into a 4%--4.5% range by late 2000. In our opinion, this
range of growth was targeted by the Federal Reserve Board as being
sustainable, given current productivity measures, without
endangering the present benign inflationary environment.

By June, investor focus returned to the dwindling supply of long-
term US Treasury securities and bond prices generally rose for the
remainder of the period. The decline in long-term US Treasury bond
yields resulted in an inverted yield curve as short-term and
intermediate-term interest rates did not fall proportionately to
long-term interest rates as the Federal Reserve Board was expected
to continue to raise short-term interest rates. The current
inversion has had as much to do with debt reduction and US Treasury
buybacks as with investor expectations of slower economic growth.
During the last six months, US Treasury bond yields have declined
more than 70 basis points to end the period at 5.78%, their lowest
monthly closing level since May 1999.

Tax-exempt bond yields also have declined in recent months. The
decline has largely been in response to the rally in US Treasury
securities, as well as a continued positive technical supply
environment. States such as California and Maryland have announced
that their large current and anticipated future budget surpluses
will permit the cancellation or postponement of expected bond
issuance. Additionally, some issuers have also initiated tenders to
repurchase existing debt, reducing the supply of tax-exempt bonds in
the secondary market as well. Given the decline in available long-
term US Treasury securities, some investors who need longer maturity
investment vehicles have begun to consider long-term municipal bonds
as potential substitutes. This has further strengthened the over-all
positive technical position of the tax-exempt market. During the
last six months, long-term municipal revenue bond yields have
declined nearly 50 basis points to 5.85%, their lowest level since
late August 1999, as measured by the Bond Buyer Revenue Bond Index.

The relative underperformance of the municipal bond market in recent
months has been especially disappointing given the strong technical
position the tax-exempt bond market has enjoyed. The issuance of
long-term tax-exempt securities has dramatically declined. During
the last year, almost $200 billion in new long-term municipal
securities was issued, a decline of almost 20% compared to the same
period a year earlier. For the six months ended July 31, 2000,
approximately $100 billion in new tax-exempt bonds was underwritten,
a decline of 17% compared to the same period in 1999.


Merrill Lynch Oregon Municipal Bond Fund
July 31, 2000


Although investors received more than $45 billion in coupon
payments, bond maturities and the proceeds from early bond
redemptions during June and July, overall investor demand has
diminished. Long-term municipal bond mutual funds have seen
consistent outflows in recent months as the yields of individual
securities have risen faster than those of larger, more diverse
mutual funds. Thus far this year, tax-exempt mutual funds have had
net redemptions of more than $12 billion.

However, the rate at which these redemptions have been occurring has
slowed in recent months. Recent US equity market volatility,
especially in the NASDAQ, has reduced some investor interest in the
stock market. This investor interest, especially earlier this year,
had been siphoning away demand for municipal bonds by retail
investors. Also, the demand from property and casualty companies is
expected to increase in the coming months. These firms are becoming
more profitable after experiencing losses in the past few years
resulting from a series of weather-related natural disasters. Yet as
positive as the tax-exempt bond market's technical environment has
been for much of this year, investor response to the reduction in
both current and future supply of US Treasury bonds has been
overwhelmingly positive and municipal bond yields have
underperformed their taxable counterparts.

Significantly lower municipal bond yields are still likely to
require weaker US employment growth and consumer spending. The
actions taken in recent months by the Federal Reserve Board should
eventually slow US economic growth. Recent declines in US new home
sales are perhaps the first sign that consumer spending is being
slowed by higher interest rates. Until further signs develop, it is
likely that the municipal bond market's current favorable technical
position will dampen significant tax-exempt interest rate volatility
and provide a stable environment for eventual improvement in
municipal bond prices.


Fiscal Year in Review
For the year ended July 31, 2000, the Fund's Class A, Class B, Class
C and Class D Shares had total returns of +2.07%, +1.55%, +1.55% and
+1.96%, respectively. (Investment results shown do not reflect sales
charges and would be lower if sales charges were included. Complete
performance information can be found on pages 4 and 5 of this report
to shareholders.) As a result of our efforts this year, the Fund
generated total returns for the 12-month period ended July 31, 2000
that modestly underperformed the average return for all Oregon
municipal debt funds, as measured by Lipper Analytical Services,
Inc.

With interest rates under pressure for much of the fiscal year ended
July 31, 2000, our portfolio strategy has been focused on seeking to
insulate the Fund from volatility, while still maintaining an
attractive dividend. As an asset class, tax-exempt bonds faced tough
competition from a surging equity market as well as mounting
pressures arising from an aggressive monetary policy designed to
curb economic growth and prevent inflation. Until recently, investor
appetite for tax-exempt products had waned, as demonstrated by the
consistent outflows throughout the mutual fund industry. This
environment was also characterized by declining year-over-year
municipal issuance.

In our last letter to shareholders, we spoke of the various factors
contributing to the tax-exempt market's weak performance relative to
the Treasury market. At the same time, we noted the compelling value
reflected in the yields available on intermediate-term--long-term
tax-exempt securities and our growing level of comfort with evolving
market fundamentals. Given this investment outlook, we positioned
the Fund to further benefit from both a decline in interest rates
and a renewed investor appetite for municipal bonds.


Merrill Lynch Oregon Municipal Bond Fund
July 31, 2000


Initially, portfolio activity consisted primarily of efforts to
modestly extend duration (a measure of sensitivity to interest rate
fluctuations) as well as to upgrade the average credit quality of
our investments. Credit spreads, having already widened appreciably
throughout 1999, were still viewed as susceptible to additional
pressure and a potential drag on a fixed-income portfolio in a
declining interest rate environment. Our efforts, in conjunction
with maintaining minimal cash reserves, have resulted in improved
performance during the fourth quarter ended July 31, 2000. In an
effort to limit volatility, we shifted our portfolio strategy to
achieve a more neutral position. While market fundamentals remain
positive, the extent of the recent rally combined with the uncertain
outcome of the November elections, suggests a more cautious approach
in the near term.

Oregon's economic recovery from the impact associated with the Asian
financial and economic turmoil of 1997 and 1998 continued apace,
reflecting the ongoing diversification of the state's economic base.
Strengths include improving fund balances, resulting from the
receipt of greater-than-expected personal income taxes and a
manageable debt burden despite additional capital needs associated
with growth. In addition, overall revenues remain strong, largely
offsetting increased costs of funding education. Three separate
ballot initiatives slated for the upcoming November elections bear
watching for the potential negative revenue impact their approval
would have on future funding requirements.


In Conclusion
We appreciate your ongoing interest in Merrill Lynch Oregon
Municipal Bond Fund, and we look forward to assisting you with your
financial needs in the months and years ahead.

Sincerely,


(Terry K. Glenn)
Terry K. Glenn
President and Trustee


(Vincent R. Giordano)
Vincent R. Giordano
Senior Vice President


(Theodore R. Jaeckel Jr.)
Theodore R. Jaeckel Jr.
Vice President and Portfolio Manager



September 9, 2000




Merrill Lynch Oregon Municipal Bond Fund
July 31, 2000


PERFORMANCE DATA


About Fund Performance

Investors are able to purchase shares of the Fund through the
Merrill Lynch Select Pricing SM System, which offers four pricing
alternatives:

* Class A Shares incur a maximum initial sales charge (front-end
load) of 4% and bear no ongoing distribution or account maintenance
fees. Class A Shares are available only to eligible investors.

* Class B Shares are subject to a maximum contingent deferred sales
charge of 4% if redeemed during the first year, decreasing 1% each
year thereafter to 0% after the fourth year. In addition, Class B
Shares are subject to a distribution fee of 0.25% and an account
maintenance fee of 0.25%. These shares automatically convert to
Class D Shares after approximately 10 years. (There is no initial
sales charge for automatic share conversions.)

* Class C Shares are subject to a distribution fee of 0.35% and an
account maintenance fee of 0.25%. In addition, Class C Shares are
subject to a 1% contingent deferred sales charge if redeemed within
one year of purchase.

* Class D Shares incur a maximum initial sales charge of 4% and an
account maintenance fee of 0.10% (but no distribution fee).

None of the past results shown should be considered a representation
of future performance. Figures shown in the "Recent Performance
Results" and "Average Annual Total Return" tables assume
reinvestment of all dividends and capital gains distributions at net
asset value on the payable date. Investment return and principal
value of shares will fluctuate so that shares, when redeemed, may be
worth more or less than their original cost. Dividends paid to each
class of shares will vary because of the different levels of account
maintenance, distribution and transfer agency fees applicable to
each class, which are deducted from the income available to be paid
to shareholders. The Fund's Investment Adviser voluntarily waived a
portion of its management fee. Without such waiver, the Fund's
performance would have been lower.


<TABLE>
Recent Performance Results*
                                                 6 Month         12 Month    Since Inception     Standardized
As of July 31, 2000                            Total Return    Total Return    Total Return      30-Day Yield
<S>                                                <C>             <C>            <C>               <C>
ML Oregon Municipal Bond Fund Class A Shares       +6.57%          +2.07%         +34.29%           3.86%
ML Oregon Municipal Bond Fund Class B Shares       +6.30           +1.55          +29.64            3.52
ML Oregon Municipal Bond Fund Class C Shares       +6.24           +1.55          +35.20            3.41
ML Oregon Municipal Bond Fund Class D Shares       +6.40           +1.96          +39.15            3.77

*Investment results shown do not reflect sales charges; results
would be lower if a sales charge was included. Total investment
returns are based on changes in net asset values for the periods
shown, and assume reinvestment of all dividends and capital gains
distributions at net asset value on the payable date. The Fund's
since inception dates are from 8/27/93 for Class A & Class B Shares
and from 10/21/94 for Class C & Class D Shares.
</TABLE>


Merrill Lynch Oregon Municipal Bond Fund
July 31, 2000


PERFORMANCE DATA (concluded)

Total Return Based on a $10,000 Investment

A line graph depicting the growth of ML Oregon Municipal
Bond Fund's Class A and Class B Shares compared to the Lehman
Brothers Municipal Bond Index++++. Beginning and ending values are:


                                      8/31/93**        7/00

ML Oregon Municipal
Bond Fund++--Class A Shares*          $ 9,600        $12,891

ML Oregon Municipal
Bond Fund++--Class B Shares*          $10,000        $12,964

Lehman Brothers Municipal
Bond Index++++                        $10,000        $14,393


A line graph depicting the growth of ML Oregon Municipal
Bond Fund's Class C and Class D Shares compared to the Lehman
Brothers Municipal Bond Index++++. Beginning and ending values are:


                                     10/31/94**        7/00
ML Oregon Municipal
Bond Fund++--Class C Shares*          $10,000        $13,520

ML Oregon Municipal
Bond Fund++--Class D Shares*          $ 9,600        $13,357

Lehman Brothers Municipal
Bond Index++++                        $10,000        $14,849


*Assuming maximum sales charge, transaction costs and other
operating expenses, including advisory fees.
**Commencement of operations.
++ML Oregon Municipal Bond Fund invests primarily in long-term
investment-grade obligations issued by or on behalf of the state of
Oregon, its political subdivisions, agencies and instrumentalities
and obligations of other qualifying issuers.
++++This unmanaged Index consists of long-term revenue bonds,
prerefunded bonds, general obligation bonds and insured bonds. The
starting date for the Index in the Class A & Class B Shares' graph
is from 8/31/93 and in the Class C & Class D Shares' graph is from
10/31/94.

Past performance is not predictive of future performance.


Average Annual Total Return

                                     % Return Without % Return With
                                       Sales Charge   Sales Charge**

Class A Shares*

One Year Ended 6/30/00                     +1.01%         -3.03%
Five Years Ended 6/30/00                   +5.05          +4.20
Inception (8/27/93) through 6/30/00        +4.17          +3.55

*Maximum sales charge is 4%.
**Assuming maximum sales charge.


                                         % Return        % Return
                                       Without CDSC    With CDSC**

Class B Shares*

One Year Ended 6/30/00                     +0.50%         -3.37%
Five Years Ended 6/30/00                   +4.52          +4.52
Inception (8/27/93) through 6/30/00        +3.64          +3.64

*Maximum contingent deferred sales charge is 4% and is reduced
to 0% after 4 years.
**Assuming payment of applicable contingent deferred sales charge.


                                         % Return        % Return
                                       Without CDSC    With CDSC**

Class C Shares*

One Year Ended 6/30/00                     +0.40%         -0.57%
Five Years Ended 6/30/00                   +4.42          +4.42
Inception(10/21/94)through6/30/00          +5.17          +5.17

*Maximum contingent deferred sales charge is 1% and is reduced
to 0% after 1 year.
**Assuming payment of applicable contingent deferred sales charge.


                                     % Return Without % Return With
                                       Sales Charge   Sales Charge**

Class D Shares*

One Year Ended 6/30/00                     +0.91%         -3.13%
Five Years Ended 6/30/00                   +4.95          +4.09
Inception (10/21/94) through 6/30/00       +5.70          +4.94

*Maximum sales charge is 4%.
**Assuming maximum sales charge.



Merrill Lynch Oregon Municipal Bond Fund
July 31, 2000

<TABLE>
SCHEDULE OF INVESTMENTS                                                                           (in Thousands)
<CAPTION>
S&P       Moody's   Face
Ratings   Ratings  Amount                             Issue                                                 Value

Oregon--72.2%
<S>       <S>     <C>       <S>                                                                              <C>
AAA       Aaa     $  500    Columbia County, Oregon, School District No. 502, GO,
                            5.05%** due 6/01/2018 (b)(d)                                                     $   184

                            Forest Grove, Oregon, Campus Improvement Revenue Refunding Bonds
                            (Pacific University):
AA        NR*        250       6% due 5/01/2015                                                                  259
AA        NR*        250       6.20% due 5/01/2020                                                               259

BBB+      NR*        900    Klamath Falls, Oregon, Intercommunity Hospital Authority Revenue Bonds
                            (Gross-Merle West Medical Center Project), 7.10% due 9/01/2024                       916

AAA       Aaa        600    Marion County, Oregon, Union High School District No. 007J (Silverton), GO,
                            7% due 6/01/2004 (b)(f)                                                              656

AAA       Aaa        600    Morrow County, Oregon, School District No. 001, GO, 6% due 6/01/2007 (a)             645

BBB+      NR*        450    Multnomah County, Oregon, Educational Facilities Revenue Bonds (University of
                            Portland Project), 6% due 4/01/2020                                                  451

AAA       Aaa        600    Northwest Regional Education Service District, Oregon, GO, 5% due 6/15/2019 (a)      566

AAA       Aaa      1,920    Oregon Health Sciences University Revenue Refunding Bonds, Series A,
                            5.70%** due 7/01/2021 (a)                                                            584

AAA       Aaa        500    Oregon State Department of Administrative Services, COP, Series A,
                            6.25% due 5/01/2017 (c)                                                              535

NR*       VMIG1++    500    Oregon State Health, Housing, Educational and Cultural Facilities
                            Authority Revenue Bonds (Guide Dogs for the Blind), VRDN, Series A,
                            4.30% due 7/01/2025 (g)                                                              500

                            Oregon State Housing and Community Services Department, Mortgage
                            Revenue Refunding Bonds (S/F Mortgage Program), Series A:
NR*       Aa2        355       6.40% due 7/01/2018                                                               368
NR*       Aa2        150       AMT, 6.20% due 7/01/2027                                                          152

BBB+      Baa1       750    Oregon State Solid Waste Disposal Facilities, Economic Development Revenue
                            Bonds (USG Corporation Project), AMT, Series 192, 6.40% due 12/01/2029               751

AAA       Aaa        950    Port of Portland, Oregon, Airport Revenue Refunding Bonds (Portland
                            International Airport), AMT, Series 7-B, 7.10% due 1/01/2012 (a)(f)                1,096

AAA       Aaa        500    Salem-Keizer, Oregon, School District Number 24J, GO, Refunding,
                            4.80% due 6/01/2013 (b)                                                              480

AAA       Aaa        500    Tillamook County, Oregon, GO, 6.25% due 1/01/2005 (d)(f)                             537

AAA       Aaa        500    Washington County, Oregon, Unified Sewer Agency, Sewer Revenue Refunding Bonds,
                            Senior Lien, Series A, 5.75% due 10/01/2012 (d)                                      531

B         NR*        500    Yamhill County, Oregon, PCR, Refunding (Smurfit Newsprint Corporation Project),
                            8% due 12/01/2003                                                                    516
</TABLE>


PORTFOLIO ABBREVIATIONS


To simplify the listings of Merrill Lynch Oregon Municipal Bond
Fund's portfolio holdings in the Schedule of Investments, we have
abbreviated the names of many of the securities according to the
list at right.

AMT        Alternative Minimum Tax (subject to)
COP        Certificates of Participation
GO         General Obligation Bonds
PCR        Pollution Control Revenue Bonds
S/F        Single-Family
STRIPES    Short-Term Inverse Payment Exempt Securities
VRDN       Variable Rate Demand Notes



Merrill Lynch Oregon Municipal Bond Fund
July 31, 2000

<TABLE>
SCHEDULE OF INVESTMENTS (concluded)                                                               (in Thousands)
<CAPTION>
S&P       Moody's   Face
Ratings   Ratings  Amount                             Issue                                                 Value

Puerto Rico--27.1%
<S>       <S>     <C>       <S>                                                                              <C>
AAA       Aaa     $2,720    Puerto Rico Commonwealth, GO, Refunding, 7% due 7/01/2010 (c)                    $ 3,209

A1+       VMIG1++    100    Puerto Rico Commonwealth, Highway and Transportation Authority, Transportation
                            Revenue Refunding Bonds, VRDN, Series A, 3.85% due 7/01/2028 (c)(g)                  100

AAA       Aaa        400    Puerto Rico Electric Power Authority, Power Revenue Bonds, STRIPES, Series T,
                            7.449% due 7/01/2005 (b)(e)                                                          439

Total Investments (Cost--$12,979)--99.3%                                                                      13,734

Other Assets Less Liabilities--0.7%                                                                              102
                                                                                                             -------
Net Assets--100.0%                                                                                           $13,836
                                                                                                             =======


(a)MBIA Insured.
(b)FSA Insured.
(c)AMBAC Insured.
(d)FGIC Insured.
(e)The interest rate is subject to change periodically and inversely
based upon prevailing market rates. The interest rate shown is the
rate in effect at July 31, 2000.
(f)Prerefunded.
(g)The interest rate is subject to change periodically based upon
prevailing market rates. The interest rate shown is the rate in
effect at July 31, 2000.
*Not Rated.
**Represents a zero coupon bond; the interest rate shown reflects
the effective yield at the time of purchase by the Fund.
++Highest short-term rating by Moody's Investors Service, Inc.
Ratings of issues shown have not been audited by Deloitte & Touche
LLP.

See Notes to Financial Statements.
</TABLE>



Merrill Lynch Oregon Municipal Bond Fund
July 31, 2000

<TABLE>
FINANCIAL INFORMATION
<CAPTION>
Statement of Assets and Liabilities as of July 31, 2000
<S>                 <S>                                                                    <C>              <C>
Assets:             Investments, at value (identified cost--$12,979,105)                                    $ 13,733,645
                    Cash                                                                                          36,015
                    Receivables:
                      Interest                                                             $    124,991
                      Securities sold                                                            30,160          155,151
                                                                                           ------------
                    Prepaid registration fees and other assets                                                     1,284
                                                                                                            ------------
                    Total assets                                                                              13,926,095
                                                                                                            ------------

Liabilities:        Payables:
                      Dividends to shareholders                                                  10,661
                      Beneficial interest redeemed                                                4,990
                      Distributor                                                                 4,630
                      Investment adviser                                                          2,197           22,478
                                                                                           ------------
                    Accrued expenses and other liabilities                                                        67,202
                                                                                                            ------------
                    Total liabilities                                                                             89,680
                                                                                                            ------------

Net Assets:         Net assets                                                                              $ 13,836,415
                                                                                                            ============
Net Assets          Class A Shares of beneficial interest, $.10 par value,
Consist of:         unlimited number of shares authorized                                                   $     18,680
                    Class B Shares of beneficial interest, $.10 par value,
                    unlimited number of shares authorized                                                        100,192
                    Class C Shares of beneficial interest, $.10 par value,
                    unlimited number of shares authorized                                                         16,490
                    Class D Shares of beneficial interest, $.10 par value,
                    unlimited number of shares authorized                                                          8,907
                    Paid-in capital in excess of par                                                          15,480,987
                    Accumulated realized capital losses on investments--net                                  (2,536,223)
                    Accumulated distributions in excess of realized capital gains on
                    investments--net                                                                             (7,158)
                    Unrealized appreciation on investments--net                                                  754,540
                                                                                                            ------------
                    Net assets                                                                              $ 13,836,415
                                                                                                            ============

Net Asset Value:    Class A--Based on net assets of $1,791,094 and 186,797 shares of
                    beneficial interest outstanding                                                         $       9.59
                                                                                                            ============
                    Class B--Based on net assets of $9,608,456 and 1,001,916 shares of
                    beneficial interest outstanding                                                         $       9.59
                                                                                                            ============
                    Class C--Based on net assets of $1,582,566 and 164,904 shares of
                    beneficial interest outstanding                                                         $       9.60
                                                                                                            ============
                    Class D--Based on net assets of $854,299 and 89,069 shares of
                    beneficial interest outstanding                                                         $       9.59
                                                                                                            ============

                    See Notes to Financial Statements.
</TABLE>



Merrill Lynch Oregon Municipal Bond Fund
July 31, 2000

<TABLE>
FINANCIAL INFORMATION (continued)
<CAPTION>
Statement of Operations
                                                                                                       For the Year Ended
                                                                                                           July 31, 2000
<S>                 <S>                                                                    <C>              <C>
Investment          Interest and amortization of premium and discount earned                                $    940,758
Income:

Expenses:           Investment advisory fees                                               $     89,281
                    Professional fees                                                            63,248
                    Printing and shareholder reports                                             62,107
                    Account maintenance and distribution fees--Class B                           53,022
                    Accounting services                                                          47,825
                    Account maintenance and distribution fees--Class C                           12,484
                    Transfer agent fees--Class B                                                  5,905
                    Trustees' fees and expenses                                                   3,845
                    Custodian fees                                                                3,470
                    Registration fees                                                             3,120
                    Pricing fees                                                                  3,027
                    Account maintenance fees--Class D                                             1,140
                    Transfer agent fees--Class C                                                  1,134
                    Transfer agent fees--Class A                                                  1,090
                    Transfer agent fees--Class D                                                    516
                    Other                                                                         3,748
                                                                                           ------------
                    Total expenses before reimbursement                                         354,962
                    Reimbursement of expenses                                                  (56,815)
                                                                                           ------------
                    Total expenses after reimbursement                                                           298,147
                                                                                                            ------------
                    Investment income--net                                                                       642,611
                                                                                                            ------------

Realized &          Realized loss on investments--net                                                          (445,099)
Unrealized          Change in unrealized appreciation on investments--net                                      (111,352)
Loss on                                                                                                     ------------
Investments--Net:   Net Increase in Net Assets Resulting from Operations                                    $     86,160
                                                                                                            ============


                    See Notes to Financial Statements.
</TABLE>


Merrill Lynch Oregon Municipal Bond Fund
July 31, 2000

<TABLE>
FINANCIAL INFORMATION (continued)
<CAPTION>
Statements of Changes in Net Assets
                                                                                          For the Year Ended July 31,
Increase (Decrease) in Net Assets:                                                            2000             1999
<S>                 <S>                                                                    <C>              <C>
Operations:         Investment income--net                                                 $    642,611     $    849,360
                    Realized gain (loss) on investments--net                                  (445,099)          442,353
                    Change in unrealized appreciation on investments--net                     (111,352)      (1,085,454)
                                                                                           ------------     ------------
                    Net increase in net assets resulting from operations                         86,160          206,259
                                                                                           ------------     ------------

Dividends &         Investment income--net:
Distributions to      Class A                                                                 (105,200)        (131,116)
Shareholders:         Class B                                                                 (410,494)        (537,290)
                      Class C                                                                  (78,272)        (110,267)
                      Class D                                                                  (48,645)         (70,687)
                    In excess of realized gain on investments--net:
                      Class A                                                                   (1,173)               --
                      Class B                                                                   (4,537)               --
                      Class C                                                                     (915)               --
                      Class D                                                                     (533)               --
                                                                                           ------------     ------------
                    Net decrease in net assets resulting from
                    dividends and distributions to shareholders                               (649,769)        (849,360)
                                                                                           ------------     ------------

Beneficial          Net decrease in net assets derived from beneficial
Interest            interest transactions                                                   (5,526,600)        (853,320)
Transactions:                                                                              ------------     ------------

Net Assets:         Total decrease in net assets                                            (6,090,209)      (1,496,421)
                    Beginning of year                                                        19,926,624       21,423,045
                                                                                           ------------     ------------
                    End of year                                                            $ 13,836,415     $ 19,926,624
                                                                                           ============     ============

                    See Notes to Financial Statements.
</TABLE>



Merrill Lynch Oregon Municipal Bond Fund
July 31, 2000

<TABLE>
FINANCIAL INFORMATION (continued)
<CAPTION>
Financial Highlights

The following per share data and ratios have been derived                                  Class A
from information provided in the financial statements.                           For the Year Ended July 31,
Increase (Decrease) in Net Asset Value:                                 2000       1999       1998      1997     1996
<S>                 <S>                                               <C>        <C>       <C>       <C>        <C>
Per Share           Net asset value, beginning of year                $   9.82   $  10.11  $  10.00  $   9.52   $   9.40
Operating                                                             --------   --------  --------  --------   --------
Performance:        Investment income--net                                 .41        .43       .47       .47        .48
                    Realized and unrealized gain (loss) on
                    investments--net                                     (.23)      (.29)       .11       .48        .12
                                                                      --------   --------  --------  --------   --------
                    Total from investment operations                       .18        .14       .58       .95        .60
                                                                      --------   --------  --------  --------   --------
                    Less dividends and distributions:
                      Investment income--net                             (.41)      (.43)     (.47)     (.47)      (.48)
                      In excess of realized gain on
                      investments--net                                    --++         --      --++        --         --
                                                                      --------   --------  --------  --------   --------
                    Total dividends and distributions                    (.41)      (.43)     (.47)     (.47)      (.48)
                                                                      --------   --------  --------  --------   --------
                    Net asset value, end of year                      $   9.59   $   9.82  $  10.11  $  10.00   $   9.52
                                                                      ========   ========  ========  ========   ========

Total Investment    Based on net asset value per share                   2.07%      1.33%     5.93%    10.27%      6.52%
Return:*                                                              ========   ========  ========  ========   ========

Ratios to Average   Expenses, net of reimbursement                       1.41%      1.16%      .89%      .78%       .53%
Net Assets:                                                           ========   ========  ========  ========   ========
                    Expenses                                             1.76%      1.51%     1.24%     1.22%      1.17%
                                                                      ========   ========  ========  ========   ========
                    Investment income--net                               4.36%      4.25%     4.62%     4.88%      5.06%
                                                                      ========   ========  ========  ========   ========

Supplemental        Net assets, end of year (in thousands)            $  1,791   $  3,031  $  3,103  $  3,232   $  3,904
Data:                                                                 ========   ========  ========  ========   ========
                    Portfolio turnover                                  64.56%     60.26%    36.31%    40.62%    103.61%
                                                                      ========   ========  ========  ========   ========



*Total investment returns exclude the effects of sales charges.
++Amount is less than $.01 per share.

See Notes to Financial Statements.
</TABLE>


Merrill Lynch Oregon Municipal Bond Fund
July 31, 2000

<TABLE>
FINANCIAL INFORMATION (continued)
<CAPTION>
Financial Highlights (continued)

The following per share data and ratios have been derived                                  Class B
from information provided in the financial statements.                           For the Year Ended July 31,
Increase (Decrease) in Net Asset Value:                                 2000       1999       1998      1997     1996
<S>                 <S>                                               <C>        <C>       <C>       <C>        <C>
Per Share           Net asset value, beginning of year                $   9.82   $  10.11  $  10.00  $   9.52   $   9.40
Operating                                                             --------   --------  --------  --------   --------
Performance:        Investment income--net                                 .36        .38       .42       .42        .44
                    Realized and unrealized gain (loss) on
                    investments--net                                     (.23)      (.29)       .11       .48        .12
                                                                      --------   --------  --------  --------   --------
                    Total from investment operations                       .13        .09       .53       .90        .56
                                                                      --------   --------  --------  --------   --------
                    Less dividends and distributions:
                      Investment income--net                             (.36)      (.38)     (.42)     (.42)      (.44)
                      In excess of realized gain on
                      investments--net                                    --++         --      --++        --         --
                                                                      --------   --------  --------  --------   --------
                    Total dividends and distributions                    (.36)      (.38)     (.42)     (.42)      (.44)
                                                                      --------   --------  --------  --------   --------
                    Net asset value, end of year                      $   9.59  $    9.82  $  10.11  $  10.00   $   9.52
                                                                      ========   ========  ========  ========   ========

Total Investment    Based on net asset value per share                   1.55%       .82%     5.39%     9.72%      5.97%
Return:*                                                              ========   ========  ========  ========   ========

Ratios to Average   Expenses, net of reimbursement                       1.93%      1.67%     1.40%     1.29%      1.04%
Net Assets:                                                           ========   ========  ========  ========   ========
                    Expenses                                             2.27%      2.02%     1.75%     1.73%      1.68%
                                                                      ========   ========  ========  ========   ========
                    Investment income--net                               3.86%      3.75%     4.11%     4.37%      4.55%
                                                                      ========   ========  ========  ========   ========

Supplemental        Net assets, end of year (in thousands)           $   9,608   $ 12,421  $ 14,965  $ 17,888   $ 21,542
Data:                                                                 ========   ========  ========  ========   ========
                    Portfolio turnover                                  64.56%     60.26%    36.31%    40.62%    103.61%
                                                                      ========   ========  ========  ========   ========


*Total investment returns exclude the effects of sales charges.
++Amount is less than $.01 per share.

See Notes to Financial Statements.
</TABLE>


Merrill Lynch Oregon Municipal Bond Fund
July 31, 2000

<TABLE>
FINANCIAL INFORMATION (continued)
<CAPTION>
Financial Highlights (continued)

The following per share data and ratios have been derived                                  Class C
from information provided in the financial statements.                           For the Year Ended July 31,
Increase (Decrease) in Net Asset Value:                                 2000       1999       1998      1997     1996
<S>                 <S>                                               <C>        <C>       <C>       <C>        <C>
Per Share           Net asset value, beginning of year                $   9.82   $  10.12  $  10.00  $   9.53   $   9.40
Operating                                                             --------   --------  --------  --------   --------
Performance:        Investment income--net                                 .36        .37       .41       .41        .43
                    Realized and unrealized gain (loss) on
                    investments--net                                     (.22)      (.30)       .12       .47        .13
                                                                      --------   --------  --------  --------   --------
                    Total from investment operations                       .14        .07       .53       .88        .56
                                                                      --------   --------  --------  --------   --------
                    Less dividends and distributions:
                      Investment income--net                             (.36)      (.37)     (.41)     (.41)      (.43)
                      In excess of realized gain on
                      investments--net                                    --++         --      --++        --         --
                                                                      --------   --------  --------  --------   --------
                    Total dividends and distributions                    (.36)      (.37)     (.41)     (.41)      (.43)
                                                                      --------   --------  --------  --------   --------
                    Net asset value, end of year                      $   9.60   $   9.82  $  10.12  $  10.00   $   9.53
                                                                      ========   ========  ========  ========   ========

Total Investment    Based on net asset value per share                   1.55%       .63%     5.39%     9.50%      5.97%
Return:*                                                              ========   ========  ========  ========   ========

Ratios to Average   Expenses, net of reimbursement                       2.02%      1.77%     1.50%     1.39%      1.16%
Net Assets:                                                           ========   ========  ========  ========   ========
                    Expenses                                             2.37%      2.12%     1.85%     1.83%      1.79%
                                                                      ========   ========  ========  ========   ========
                    Investment income--net                               3.75%      3.64%     4.01%     4.28%      4.45%
                                                                      ========   ========  ========  ========   ========

Supplemental        Net assets, end of year (in thousands)            $  1,583   $  2,705  $  2,549  $  2,063   $  1,555
Data:                                                                 ========   ========  ========  ========   ========
                    Portfolio turnover                                  64.56%     60.26%    36.31%    40.62%    103.61%
                                                                      ========   ========  ========  ========   ========


*Total investment returns exclude the effects of sales charges.
++Amount is less than $.01 per share.

See Notes to Financial Statements.
</TABLE>



Merrill Lynch Oregon Municipal Bond Fund
July 31, 2000

<TABLE>
FINANCIAL INFORMATION (concluded)
<CAPTION>
Financial Highlights (concluded)

The following per share data and ratios have been derived                                  Class D
from information provided in the financial statements.                           For the Year Ended July 31,
Increase (Decrease) in Net Asset Value:                                 2000       1999       1998      1997     1996
<S>                 <S>                                               <C>        <C>       <C>       <C>        <C>
Per Share           Net asset value, beginning of year                $   9.82   $  10.11  $  10.00  $   9.52   $   9.39
Operating                                                             --------   --------  --------  --------   --------
Performance:        Investment income--net                                 .40        .42       .46       .46        .47
                    Realized and unrealized gain (loss) on
                    investments--net                                     (.23)      (.29)       .11       .48        .13
                                                                      --------   --------  --------  --------   --------
                    Total from investment operations                       .17        .13       .57       .94        .60
                                                                      --------   --------  --------  --------   --------
                    Less dividends and distributions:
                      Investment income--net                             (.40)      (.42)     (.46)     (.46)      (.47)
                      In excess of realized gain on
                      investments--net                                    --++         --      --++        --         --
                                                                      --------   --------  --------  --------   --------
                    Total dividends and distributions                    (.40)      (.42)     (.46)     (.46)      (.47)
                                                                      --------   --------  --------  --------   --------
                    Net asset value, end of year                      $   9.59   $   9.82  $  10.11 $   10.00   $   9.52
                                                                      ========   ========  ========  ========   ========

Total Investment    Based on net asset value per share                   1.96%      1.23%     5.82%    10.17%      6.52%
Return:*                                                              ========   ========  ========  ========   ========

Ratios to Average   Expenses, net of reimbursement                       1.51%      1.27%      .99%      .90%       .63%
Net Assets:                                                           ========   ========  ========  ========   ========
                    Expenses                                             1.86%      1.62%     1.34%     1.32%      1.28%
                                                                      ========   ========  ========  ========   ========
                    Investment income--net                               4.25%      4.15%     4.52%     4.76%      4.97%
                                                                      ========   ========  ========  ========   ========

Supplemental        Net assets, end of year (in thousands)            $    854   $  1,770  $    806  $    399   $    173
Data:                                                                 ========   ========  ========  ========   ========
                    Portfolio turnover                                  64.56%     60.26%    36.31%    40.62%    103.61%
                                                                      ========   ========  ========  ========   ========


*Total investment returns exclude the effects of sales charges.
++Amount is less than $.01 per share.

See Notes to Financial Statements.
</TABLE>


Merrill Lynch Oregon Municipal Bond Fund
July 31, 2000


NOTES TO FINANCIAL STATEMENTS

1. Significant Accounting Policies:
Merrill Lynch Oregon Municipal Bond Fund (the "Fund") is part of
Merrill Lynch Multi-State Municipal Series Trust (the "Trust"). The
Fund is registered under the Investment Company Act of 1940 as a non-
diversified, open-end management investment company. The Fund's
financial statements are prepared in accordance with accounting
principles generally accepted in the United States of America, which
may require the use of management accruals and estimates. The Fund
offers four classes of shares under the Merrill Lynch Select Pricing
SM System. Shares of Class A and Class D are sold with a front-end
sales charge. Shares of Class B and Class C may be subject to a
contingent deferred sales charge. All classes of shares have
identical voting, dividend, liquidation and other rights and the
same terms and conditions, except that Class B, Class C and Class D
Shares bear certain expenses related to the account maintenance of
such shares, and Class B and Class C Shares also bear certain
expenses related to the distribution of such shares. Each class has
exclusive voting rights with respect to matters relating to its
account maintenance and distribution expenditures. The following is
a summary of significant accounting policies followed by the Fund.

(a) Valuation of investments--Municipal bonds and other portfolio
securities in which the Fund invests are traded primarily in the
over-the-counter municipal bond and money markets and are valued at
the last available bid price in the over-the-counter market or on
the basis of yield equivalents as obtained from one or more dealers
that make markets in the securities. Financial futures contracts and
options thereon, which are traded on exchanges, are valued at their
settlement prices as of the close of such exchanges. Short-term
investments with remaining maturities of sixty days or less are
valued at amortized cost, which approximates market value.
Securities and assets for which market quotations are not readily
available are valued at fair value as determined in good faith by or
under the direction of the Board of Trustees of the Trust, including
valuations furnished by a pricing service retained by the Trust,
which may utilize a matrix system for valuations. The procedures of
the pricing service and its valuations are reviewed by the officers
of the Trust under the general supervision of the Trustees.

(b) Derivative financial instruments--The Fund may engage in various
portfolio investment strategies to increase or decrease the level of
risk to which the Fund is exposed more quickly and efficiently than
transactions in other types of instruments. Losses may arise due to
changes in the value of the contract or if the counterparty does not
perform under the contract.

* Financial futures contracts--The Fund may purchase or sell
financial futures contracts and options on such futures contracts
for the purpose of hedging the market risk on existing securities or
the intended purchase of securities. Futures contracts are contracts
for delayed delivery of securities at a specific future date and at
a specific price or yield. Upon entering into a contract, the Fund
deposits and maintains as collateral such initial margin as required
by the exchange on which the transaction is effected. Pursuant to
the contract, the Fund agrees to receive from or pay to the broker
an amount of cash equal to the daily fluctuation in value of the
contract. Such receipts or payments are known as variation margin
and are recorded by the Fund as unrealized gains or losses. When the
contract is closed, the Fund records a realized gain or loss equal
to the difference between the value of the contract at the time it
was opened and the value at the time it was closed.

(c) Income taxes--It is the Fund's policy to comply with the
requirements of the Internal Revenue Code applicable to regulated
investment companies and to distribute substantially all of its
taxable income to its shareholders. Therefore, no Federal income tax
provision is required.

(d) Security transactions and investment income--Security
transactions are recorded on the dates the transactions are entered
into (the trade dates). Interest income is recognized on the accrual
basis. Discounts and market premiums are amortized into interest
income. Realized gains and losses on security transactions are
determined on the identified cost basis.

(e) Prepaid registration fees--Prepaid registration fees are charged
to expense as the related shares are issued.

(f) Dividends and distributions--Dividends from net investment
income are declared daily and paid monthly. Distributions of capital
gains are recorded on the ex-dividend dates. Distributions in excess
of realized capital gains are due primarily to differing the
treatment for futures transactions and post-October losses.


Merrill Lynch Oregon Municipal Bond Fund
July 31, 2000


NOTES TO FINANCIAL STATEMENTS (concluded)


2. Investment Advisory Agreement and Transactions
with Affiliates:
The Fund has entered into an Investment Advisory Agreement with Fund
Asset Management, L.P. ("FAM"). The general partner of FAM is
Princeton Services, Inc. ("PSI"), an indirect wholly-owned
subsidiary of Merrill Lynch & Co., Inc. ("ML & Co."), which is the
limited partner. The Fund has also entered into a Distribution
Agreement and Distribution Plans with FAM Distributors, Inc. ("FAMD"
or the "Distributor"), which is a wholly-owned subsidiary of Merrill
Lynch Group, Inc.

FAM is responsible for the management of the Fund's portfolio and
provides the necessary personnel, facilities, equipment and certain
other services necessary to the operations of the Fund. For such
services, the Fund pays a monthly fee based upon the average daily
value of the Fund's net assets at the following annual rates: .55%
of the Fund's average daily net assets not exceeding $500 million;
 .525% of average daily net assets in excess of $500 million but not
exceeding $1 billion; and .50% of average daily net assets in excess
of $1 billion. For the year ended July 31, 2000, FAM earned fees of
$89,281, of which $56,815 was voluntarily waived.

Pursuant to the Distribution Plans adopted by the Fund in accordance
with Rule 12b-1 under the Investment Company Act of 1940, the Fund
pays the Distributor ongoing account maintenance and distribution
fees. The fees are accrued daily and paid monthly at annual rates
based upon the average daily net assets of the shares as follows:

                                     Account    Distribution
                                 Maintenance Fee     Fee

Class B                                .25%         .25%
Class C                                .25%         .35%
Class D                                .10%          --

Pursuant to a sub-agreement with the Distributor, Merrill Lynch,
Pierce, Fenner & Smith Incorporated ("MLPF&S"), a subsidiary of ML &
Co., also provides account maintenance and distribution services to
the Fund. The ongoing account maintenance fee compensates the
Distributor and MLPF&S for providing account maintenance services to
Class B, Class C and Class D shareholders. The ongoing distribution
fee compensates the Distributor and MLPF&S for providing shareholder
and distribution-related services to Class B and Class C
shareholders.

For the year ended July 31, 2000, FAMD earned underwriting discounts
and MLPF&S earned dealer concessions on sales of the Fund's Class D
Shares as follows:

                                FAMD   MLPF&S

Class D                         $11     $150

For the year ended July 31, 2000, MLPF&S received contingent
deferred sales charges of $22,935 and $1,186 relating to
transactions in Class B and Class C Shares, respectively.

Financial Data Services, Inc. ("FDS"), a wholly-owned subsidiary of
ML & Co., is the Fund's transfer agent.

Accounting services are provided to the Fund by FAM at cost.

Certain officers and/or trustees of the Fund are officers and/or
directors of FAM, PSI, FDS, FAMD, and/or ML & Co.


3. Investments:
Purchases and sales of investments, excluding short-term securities,
for the year ended July 31, 2000 were $10,116,566 and $16,097,560,
respectively.

Net realized gains (losses) for the year ended July 31, 2000 and net
unrealized gains as of July 31, 2000 were as follows:

                                     Realized
                                      Gains      Unrealized
                                     (Losses)       Gains

Long-term investments             $ (464,102)     $  754,540
Financial futures contracts            19,003             --
                                   ----------     ----------
Total                             $ (445,099)     $  754,540
                                   ==========     ==========

As of July 31, 2000, net unrealized appreciation for Federal income
tax purposes aggregated $754,540, of which $816,825 related to
appreciated securities and $62,285 related to depreciated
securities. The aggregate cost of investments at July 31, 2000 for
Federal income tax purposes was $12,979,105.


4. Beneficial Interest Transactions:
Net decrease in net assets derived from beneficial interest
transactions was $5,526,600 and $853,320 for the years ended July
31, 2000 and July 31, 1999, respectively.

Transactions in shares of beneficial interest for each class were as
follows:


Class A Shares for the Year                         Dollar
Ended July 31, 2000                   Shares        Amount

Shares sold                            21,449     $  202,474
Shares issued to shareholders
in reinvestment of dividends
and distributions                       7,254         68,376
                                   ----------     ----------
Total issued                           28,703        270,850
Shares redeemed                     (150,728)    (1,407,319)
                                   ----------     ----------
Net decrease                        (122,025)   $(1,136,469)
                                   ==========     ==========


Merrill Lynch Oregon Municipal Bond Fund
July 31, 2000


Class A Shares for the Year                         Dollar
Ended July 31, 1999                   Shares        Amount

Shares sold                            48,530     $  498,190
Shares issued to shareholders
in reinvestment of dividends            8,458         85,918
                                   ----------     ----------
Total issued                           56,988        584,108
Shares redeemed                      (54,976)      (557,027)
                                   ----------     ----------
Net increase                            2,012     $   27,081
                                   ==========     ==========


Class B Shares for the Year                         Dollar
Ended July 31, 2000                   Shares        Amount

Shares sold                            69,165   $    650,319
Shares issued to shareholders
in reinvestment of dividends
and distributions                      15,618        147,204
                                   ----------     ----------
Total issued                           84,783        797,523
Automatic conversion of shares        (3,392)       (32,156)
Shares redeemed                     (344,753)    (3,251,686)
                                   ----------     ----------
Net decrease                        (263,362)   $(2,486,319)
                                   ==========     ==========


Class B Shares for the Year                         Dollar
Ended July 31, 1999                   Shares        Amount

Shares sold                           247,050    $ 2,528,521
Shares issued to shareholders
in reinvestment of dividends           20,295        206,486
                                   ----------     ----------
Total issued                          267,345      2,735,007
Automatic conversion of shares        (2,706)       (27,775)
Shares redeemed                     (479,089)    (4,873,473)
                                   ----------     ----------
Net decrease                        (214,450)   $(2,166,241)
                                   ==========     ==========


Class C Shares for the Year                         Dollar
Ended July 31, 2000                   Shares        Amount

Shares sold                             8,109     $   76,536
Shares issued to shareholders
in reinvestment of dividends
and distributions                       4,561         43,070
                                   ----------     ----------
Total issued                           12,670        119,606
Shares redeemed                     (123,064)    (1,162,380)
                                   ----------     ----------
Net decrease                        (110,394)   $(1,042,774)
                                   ==========     ==========


Class C Shares for the Year                         Dollar
Ended July 31, 1999                   Shares        Amount

Shares sold                           115,073    $ 1,177,617
Shares issued to shareholders
in reinvestment of dividends            6,629         67,435
                                   ----------     ----------
Total issued                          121,702      1,245,052
Shares redeemed                      (98,227)      (987,740)
                                   ----------     ----------
Net increase                           23,475     $  257,312
                                   ==========     ==========


Class D Shares for the Year                         Dollar
Ended July 31, 2000                   Shares        Amount

Shares sold                             8,652  $      82,867
Automatic conversion of shares          3,392         32,156
Shares issued to shareholders
in reinvestment of dividends
and distributions                       1,245         11,763
                                   ----------     ----------
Total issued                           13,289        126,786
Shares redeemed                     (104,499)      (987,824)
                                   ----------     ----------
Net decrease                         (91,210)   $  (861,038)
                                   ==========     ==========


Class D Shares for the Year                         Dollar
Ended July 31, 1999                   Shares        Amount

Shares sold                           108,087    $ 1,105,169
Automatic conversion of shares          2,706         27,775
Shares issued to shareholders
in reinvestment of dividends            2,096         21,304
                                   ----------     ----------
Total issued                          112,889      1,154,248
Shares redeemed                      (12,343)      (125,720)
                                   ----------     ----------
Net increase                          100,546    $ 1,028,528
                                   ==========     ==========


5. Short-Term Borrowings:
On December 3, 1999, the Fund, along with certain other funds
managed by FAM and its affiliates, entered into a one-year,
unsecured $1,000,000,000 credit agreement with The Bank of New York
and other lenders. The funds may borrow money for temporary or
emergency purposes to meet shareholder redemptions. Each fund may
borrow up to the maximum amount allowable under the fund's current
prospectus and statement of additional information, subject to
various other legal, regulatory or contractual limits. The funds
collectively pay a commitment fee of .09% per annum on the available
portion of the facility. Amounts borrowed under the facility bear
interest at the Federal Funds rate plus .50%. The Fund did not
borrow from the facility during the year ended July 31, 2000.


6. Capital Loss Carryforward:
At July 31, 2000, the Fund had a net capital loss carryforward of
approximately $1,983,000, of which $679,000 expires in 2003,
$1,233,000 expires in 2004 and $71,000 expires in 2008. This amount
will be available to offset like amounts of any future taxable
gains.



Merrill Lynch Oregon Municipal Bond Fund
July 31, 2000

<AUDIT-REPORT>
INDEPENDENT AUDITORS' REPORT

The Board of Trustees and Shareholders,
Merrill Lynch Oregon Municipal Bond Fund of
Merrill Lynch Multi-State Municipal Series Trust:

We have audited the accompanying statement of assets and
liabilities, including the schedule of investments, of Merrill Lynch
Oregon Municipal Bond Fund of Merrill Lynch Multi-State Municipal
Series Trust as of July 31, 2000, the related statements of
operations for the year then ended and changes in net assets for
each of the years in the two-year period then ended, and the
financial highlights for each of the years in the five-year period
then ended. These financial statements and the financial highlights
are the responsibility of the Fund's management. Our responsibility
is to express an opinion on these financial statements and the
financial highlights based on our audits.

We conducted our audits in accordance with auditing standards
generally accepted in the United States of America. Those standards
require that we plan and perform the audit to obtain reasonable
assurance about whether the financial statements and the financial
highlights are free of material misstatement. An audit includes
examining, on a test basis, evidence supporting the amounts and
disclosures in the financial statements. Our procedures included
confirmation of securities owned at July 31, 2000 by correspondence
with the custodian. An audit also includes assessing the accounting
principles used and significant estimates made by management, as
well as evaluating the overall financial statement presentation. We
believe that our audits provide a reasonable basis for our opinion.

In our opinion, such financial statements and financial highlights
present fairly, in all material respects, the financial position of
Merrill Lynch Oregon Municipal Bond Fund of Merrill Lynch Multi-
State Municipal Series Trust as of July 31, 2000, the results of its
operations, the changes in its net assets, and the financial
highlights for the respective stated periods in conformity with
accounting principles generally accepted in the United States of
America.

Deloitte & Touche LLP
Princeton, New Jersey
September 11, 2000


IMPORTANT TAX INFORMATION (unaudited)

All of the net investment income distributions paid monthly by
Merrill Lynch Oregon Municipal Bond Fund during its taxable year
ended July 31, 2000 qualify as tax-exempt interest dividends for
Federal income tax purposes.

Additionally, the following taxable ordinary income dividend was
paid by the Fund during the year:

Record    Payable    Ordinary
Date       Date       Income

12/20/99  12/31/99  $.003925

There were no capital gains distributions paid by the Fund during
the year.

Please retain this information for your records.



Merrill Lynch Oregon Municipal Bond Fund
July 31, 2000


OFFICERS AND TRUSTEES

Terry K. Glenn, President and Trustee
James H. Bodurtha, Trustee
Herbert I. London, Trustee
Joseph L. May, Trustee
Andre F. Perold, Trustee
Arthur Zeikel, Trustee
Vincent R. Giordano, Senior Vice President
Kenneth A. Jacob, Vice President
Theodore R. Jaeckel Jr., Vice President
Donald C. Burke, Vice President and Treasurer
Alice A. Pellegrino, Secretary

Custodian
State Street Bank and Trust Company
P.O. Box 351
Boston, MA 02101

Transfer Agent
Financial Data Services, Inc.
4800 Deer Lake Drive East
Jacksonville, FL 32246-6484
(800) 637-3863



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