DREYFUS NEW JERSEY MUNICIPAL MONEY MARKET FUND INC
N-30D, 2000-03-31
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Dreyfus New Jersey
Municipal Money Market Fund, Inc.
ANNUAL REPORT January 31, 2000

(reg.tm)

<PAGE>

The  views  expressed herein are current to the date of this report. These views
and  the  composition  of the fund's portfolio are subject to change at any time
based on market and other conditions.

   * Not FDIC-Insured
   * Not Bank-Guaranteed
   * May Lose Value

Year 2000 Issues (Unaudited)

The fund could be adversely affected if the computer systems used by Dreyfus and
the fund's other service providers do not properly process and calculate
date-related information from and after January 1, 2000. Dreyfus has taken steps
designed to avoid year 2000-related problems in its systems and to monitor the
readiness  of other service providers.  In addition, issuers of securities in
which the fund invests may be adversely affected by year 2000-related problems.
This could have an impact on the value of the fund's investments and its share
price.



<PAGE>

                                 Contents

                                 THE FUND
- --------------------------------------------------------------------------------

                             2   Letter from the President

                             3   Discussion of Fund Performance

                             6   Statement of Investments

                            10   Statement of Assets and Liabilities

                            11   Statement of Operations

                            12   Statement of Changes in Net Assets

                            13   Financial Highlights

                            14   Notes to Financial Statements

                            17   Report of Independent Auditors

                            18   Important Tax Information

                                 FOR MORE INFORMATION
- --------------------------------------------------------------------------------

                                 Back Cover

<PAGE>


                                                                       The Fund

                           Dreyfus New Jersey Municipal Money Market Fund, Inc.

LETTER FROM THE PRESIDENT

Dear Shareholder:

We  are  pleased  to present this annual report for Dreyfus New Jersey Municipal
Money  Market  Fund,  Inc.,  covering  the 12-month period from February 1, 1999
through January 31, 2000. Inside, you'll find valuable information about how the
fund  was  managed  during the reporting period, including a discussion with the
fund's portfolio manager, Jill Shaffro.

When  the  reporting  period  began,  it  became apparent that international and
domestic  economies  were  growing faster than analysts expected, giving rise to
concerns  that  long-dormant  inflationary  pressures might re-emerge. Consumers
continued  to  spend heavily, unemployment levels reached new lows and the stock
market  continued  to  climb.  Because unsustainable economic growth may trigger
unwanted inflationary pressures, the Federal Reserve Board raised key short-term
interest  rates  three times between June 30 and the end of the reporting period
in  an attempt to forestall an acceleration of inflation. A fourth rate hike was
announced  just  a  few  days after the reporting period ended. These influences
contributed to higher yields for tax-exempt money market securities.

We  appreciate  your  confidence over the past year, and we look forward to your
continued participation in Dreyfus New Jersey Municipal Money Market Fund, Inc.

Sincerely,


Stephen E. Canter

President and Chief Investment Officer

The Dreyfus Corporation

February 15, 2000





<PAGE>

DISCUSSION OF FUND PERFORMANCE

Jill Shaffro, Portfolio Manager

How did Dreyfus New Jersey Municipal Money Market Fund, Inc. perform during the
period?

For  the  12-month period ended January 31, 2000, the fund achieved a tax-exempt
yield  of  2.51% . Taking  into  account  the  effects  of compounding, the fund
achieved an effective yield of 2.53%.(1 )

What is the fund's investment approach?

The  fund' s  objective  is to seek a high level of federal and New Jersey state
tax-exempt  income  while  maintaining  a  stable  $1.00  share  price.  We  are
especially    vigilant    in    our    efforts    to    preserve    capital.

In  pursuing this objective, we employ two primary strategies. First, we attempt
to  add  value  by  constructing a diverse portfolio of high quality, tax-exempt
money market instruments from New Jersey issuers. Second, we actively manage the
fund'  s   average   maturity   in  anticipation  of  interest-rate  trends  and
supply-and-demand changes in New Jersey's short-term municipal marketplace.

For  example, if we expect an increase in short-term supply, we may decrease the
average  maturity  of the fund, which would enable us to purchase new securities
with  higher  yields. Yields tend to rise when there is an increase in new-issue
supply competing for investor interest. New securities are generally issued with
maturities  in  the  one-year  range, which tend to lengthen the fund's weighted
average  maturity.  If we anticipate limited new-issue supply, we may extend the
fund' s average maturity to maintain current yields for as long as practical. At
other  times,  we  try to maintain an average maturity that reflects our view of
short-term interest-rate trends and future supply-and-demand considerations.

What other factors influenced the fund's performance?

Soon  after  the reporting period began, it became apparent that economic growth
was    greater    than    most    investors    had    anticipated.    The   Fun



<PAGE>

DISCUSSION OF FUND PERFORMANCE (CONTINUED)

Evidence  emerged  that  economies  in  Japan  and  Southeast  Asia had begun to
recover,  and  the  growth of the U.S. economy was robust. In the United States,
consumer confidence was at a 30-year high and employment was strong, with hourly
wages rising.

This  positive  economic  news raised concerns among fixed-income investors that
inflationary  pressures  might re-emerge. In response, the Federal Reserve Board
increased  short-term  interest  rates three times during the summer and fall of
1999.  An  additional  rate hike occurred just after the reporting period ended,
for a total increase of 100 basis points from February 1, 1999, the start of the
reporting  period,  through  February  15,  2000,  the  date  of  this  report.

Although  these  interest-rate  increases caused short-term tax-exempt yields to
rise  throughout  the  reporting  period, tax-exempt money market yields did not
rise  as  much as comparable taxable yields during much of the year. Many states
and  municipalities  enjoyed  higher tax revenues during this period of economic
prosperity.  As a result, many municipalities had less need to borrow to satisfy
their    short-term    obligations.

What is the fund's current strategy?

We  have  continued  to  manage  the  fund' s  average maturity according to our
supply-and-demand  expectations.  Accordingly,  we  modestly extended the fund's
average  maturity  last  summer  to maintain competitive yields during a time of
little  new  issuance.  We  later allowed the fund's average maturity to decline
naturally  as  existing  holdings  matured, enabling us to capture higher yields
during  the  fourth  quarter of 1999, when issuance increased. We again modestly
extended  the  average maturity at year-end to take advantage of market weakness
in  advance  of  potential  Y2K  concerns, which ultimately proved unfounded. We
ended  the  reporting  period with a weighted average maturity that was slightly
longer  than  neutral. This position was designed to maintain competitive yields
through    February,    typically    a    low-issuance    month.


<PAGE>


Our  security selection strategy continued to focus on very high quality, liquid
money  market  instruments from an array of issuers. Some of the most frequently
used  instruments included Variable Rate Demand Notes (VRDNs), which affords the
fund  a  high  degree  of liquidity and credit quality. We also found attractive
opportunities  in  tax-exempt  commercial paper during the reporting period. For
example,  in September, we purchased commercial paper issued by the state of New
Jersey,  which  helped  us  extend  the  fund's average weighted maturity. These
securities  offered  high levels of liquidity, strong credit characteristics and
competitive yields. Of course, portfolio composition will change over time.

February 15, 2000

(1)  EFFECTIVE YIELD IS BASED UPON DIVIDENDS DECLARED DAILY AND REINVESTED
MONTHLY. PAST PERFORMANCE IS NO GUARANTEE OF FUTURE RESULTS. YIELDS FLUCTUATE.
INCOME MAY BE SUBJECT TO STATE AND LOCAL TAXES FOR NON-NEW JERSEY RESIDENTS, AND
SOME INCOME MAY BE SUBJECT TO THE FEDERAL ALTERNATIVE MINIMUM TAX (AMT) FOR
CERTAIN INVESTORS. AN INVESTMENT IN THE FUND IS NOT INSURED OR GUARANTEED BY THE
FDIC OR ANY OTHER GOVERNMENT AGENCY. ALTHOUGH THE FUND SEEKS TO PRESERVE THE
VALUE OF YOUR INVESTMENT AT $1.00 PER SHARE, IT IS POSSIBLE TO LOSE MONEY BY
INVESTING IN THE FUND.

                                                             The Fund

<PAGE>


STATEMENT OF INVESTMENTS (CONTINUED)

STATEMENT OF INVESTMENTS

January 31, 2000

<TABLE>
<CAPTION>


                                                                                             Principal
TAX EXEMPT INVESTMENTS--98.8%                                                               Amount ($)                 Value ($)
- ------------------------------------------------------------------------------------------------------------------------------------
<S>                                                                                           <C>                      <C>
Atlantic County Improvement Authority, Revenue, VRDN

  (Aces Pooled Government Loan Program)

   2.75% (LOC; Krediet Bank)                                                                  4,800,000  (a)           4,800,000


Bayonne Municipal Utilities Authority (Sewer Project)


   3.50%, 5/5/2000                                                                           12,000,000               12,008,956


Burlington County, BAN


   3.50%, 6/9/2000                                                                            8,648,000                8,657,133


Essex County Improvement Authority:


   BAN 3.50%, 3/31/2000                                                                      20,000,000               20,010,929

   Revenue, VRDN (County Asset Sale Project)

      3.05% (Insured; AMBAC and

      Liquidity Facility; Morgan Guaranty Trust Co.)                                          9,800,000  (a)           9,800,000


Hudson County Improvement Authority, VRDN

  (Essential Purpose Pooled Government Loan)


   3.20% (LOC; First Union National Bank)                                                    16,240,000  (a)          16,240,000

Jersey City, BAN 4.75%, 1/12/2001                                                             9,000,000                9,046,539

Middlesex County, BAN 4.50%, 1/19/2001                                                       13,300,000               13,363,127


Monmouth County Improvement Authority, Revenue, VRDN

  (Aces Pooled Government Loan Program)


   2.80% (LOC; The Bank of New York)                                                         19,985,000  (a)          19,985,000


New Jersey Economic Development Authority:

  Exempt Facilities Revenue, CP


      (Chambers Cogen) 3.65%, 3/13/2000                                                      11,100,000               11,100,000

   VRDN:

      EDR:

         (Exit 8A Limited Partnership Project)

            3.10% (LOC; European American Bank)                                               5,700,000  (a)           5,700,000

         (Merck and Co. Inc.)

            3.60%, Series A (LOC; Merck and Co.)                                              1,000,000  (a)           1,000,000

         Refunding (Hartz and Rex Associates)

            3.225%, Series B (LOC; Citibank)                                                  2,000,000  (a)           2,000,000

         (White Horse Pike Limited Project)

            3.80% (Corp. Guaranty; Household Finance Corp.)                                   7,600,000  (a)           7,600,000

      Mortgage Facilities Revenue (Rennoc Corp. Project)

         3.30% (LOC; LaSalle National Bank)                                                   3,305,000  (a)           3,305,000

      Natural Gas Facilities Revenue, Refunding

         (New Jersey Natural Gas Co. Project)

         2.90%, Series A (Insured; AMBAC and

         Liquidity Facility; The Bank of New York)                                            4,845,000  (a)           4,845,000

      PCR, Refunding:

         (Hoffman La Roche Inc.)

            3.10% (LOC; Wachovia Bank of Georgia)                                            20,000,000  (a)          20,000,000

         (Public Service Electric and Gas Co.)

            3%, Series A (Insured; MBIA and

            Liquidity Facility; Union Bank of Switzerland)                                   13,300,000  (a)          13,300,000



<PAGE>


                                                                                              Principal
TAX EXEMPT INVESTMENTS (CONTINUED)                                                           Amount ($)               Value ($)
- ------------------------------------------------------------------------------------------------------------------------------------

New Jersey Economic Development Authority (continued):

  School Revenue, Refunding (Blair Academy)


      3.55% (LOC; First Union National Bank)                                                  5,290,000  (a)           5,290,000


New Jersey Educational Facilities Authority, Revenue, Refunding,

  VRDN (College of New Jersey)

  3.10%, Series A (Insured; AMBAC and


   LOC: Bank of Nova Scotia and Toronto-Dominion Bank)                                       22,100,000  (a)          22,100,000


New Jersey Health Care Facilities Financing Authority, Revenue:

  Refunding (Virtual Health Issue)


      4%, 7/1/2000 (Insured; FSA)                                                             4,865,000                4,865,330

   VRDN (Hospital Capital Asset Financing)

      3%, Series A (LOC; Chase Manhattan Bank)                                                2,200,000  (a)           2,200,000


New Jersey Higher Education Assistance Authority,

  Student Loan Revenue, Refunding

  3.10%, Series B, 6/1/2000 (Insured; MBIA and


   Liquidity Facility; Landesbank Hessen)                                                     6,000,000                6,000,000


New Jersey Sports and Exposition Authority, VRDN


   3.05%, Series C (Insured; MBIA and LOC; Credit Suisse)                                    12,000,000  (a)          12,000,000


New Jersey Transportation Trust Fund Authority,

  Transportation System, Prerefunded

  6%, Series A, 6/15/2000


   (Escrowed in; U.S. Government Securities)                                                  5,000,000                5,038,709


New Jersey Turnpike Authority, Turnpike Revenue, Refunding,

  VRDN 2.50%, Series D


   (Insured; FGIC and Liquidity Facility; Societe Generale)                                  27,800,000               27,800,000

Patterson, BAN 4%, 6/16/2000                                                                  8,304,000                8,320,399


Port Authority of New York and New Jersey,

  Special Obligation Revenue, VRDN

  (Versatile Structure Obligation):


      3.60%, Series 5 (Liquidity Facility; Bayerische Landesbank)                             5,000,000                5,000,000

      3.65%, Series 4 (LOC; Landesbank Hessen)                                               17,450,000               17,450,000

      3.65%, Series 6 (Liquidity Facility; Bank of Nova Scotia)                              16,700,000               16,700,000

Rahway, BAN 4.15%, 12/20/2000                                                                 9,000,000                9,017,570


State of New Jersey Transit Corporation, CP:

  3.70%, Series A, 2/10/2000

    (Liquidity Facility; Bank of Nova Scotia, Commerz Bank


      and Toronto-Dominion Bank)                                                              4,300,000                4,300,000

   3.75%, Series A, 2/10/2000

      (Liquidity Facility; Bank of Nova Scotia, Commerz Bank

      and Toronto-Dominion Bank)                                                              2,000,000                2,000,000

   3.55%, Series A, 2/29/2000

      (Liquidity Facility; Bank of Nova Scotia, Commerz Bank

      and Toronto-Dominion Bank)                                                              5,000,000                5,000,000

                                                                                                     The Fund

<PAGE>



STATEMENT OF INVESTMENTS (CONTINUED)

                                                                                              Principal
TAX EXEMPT INVESTMENTS (CONTINUED)                                                           Amount ($)                Value ($)
- ------------------------------------------------------------------------------------------------------------------------------------

State of New Jersey, Transit Corp., CP (continued):

  3.75%, Series A, 2/29/2000

    (Liquidity Facility; Bank of Nova Scotia, Commerz Bank


      and Toronto-Dominion Bank)                                                              1,200,000                1,200,000

   3.70%, Series A, 3/8/2000

      (Liquidity Facility; Bank of Nova Scotia, Commerz Bank

      and Toronto-Dominion Bank)                                                              8,000,000                8,000,000

   3.75%, Series A, 3/9/2000

      (Liquidity Facility; Bank of Nova Scotia, Commerz Bank

      and Toronto-Dominion Bank)                                                             20,000,000               20,000,000

   3.70%, Series A, 3/10/2000

      (Liquidity Facility; Bank of Nova Scotia, Commerz Bank

      and Toronto-Dominion Bank)                                                              5,000,000                5,000,000

   3.85%, Series A, 3/10/2000

      (Liquidity Facility; Bank of Nova Scotia, Commerz Bank

      and Toronto-Dominion Bank)                                                             15,000,000               15,000,000

   3.70%, Series A, 4/5/2000

      (Liquidity Facility; Bank of Nova Scotia, Commerz Bank

      and Toronto-Dominion Bank)                                                              6,600,000                6,600,000

   3.75%, Series A, 4/10/2000

      (Liquidity Facility; Bank of Nova Scotia, Commerz Bank

      and Toronto-Dominion Bank)                                                             16,500,000               16,500,000

Trenton, BAN 3.45%, 5/19/2000                                                                10,000,000               10,008,505

Vineland, BAN 4.25%, 5/17/2000                                                                8,000,000                8,007,953
- ------------------------------------------------------------------------------------------------------------------------------------


TOTAL INVESTMENTS


   (cost $426,160,150)                                                                            98.8%              426,160,150

CASH AND RECEIVABLES (NET)                                                                         1.2%                5,382,988

NET ASSETS                                                                                       100.0%              431,543,138
</TABLE>




<PAGE>

<TABLE>
<CAPTION>

Summary of Abbreviations


<S>                 <C>                                           <C>               <C>
AMBAC               American Municipal Bond                       FSA               Financial Security Assurance

                        Assurance Corporation                     LOC               Letter of Credit

BAN                 Bond Anticipation Notes                       MBIA              Municipal Bond Investors Assurance

CP                  Commercial Paper                                                    Insurance Corporation

EDR                 Economic Development Revenue                  PCR               Pollution Control Revenue

FGIC                Financial Guaranty Insurance                  VRDN              Variable Rate Demand Notes
                        Company

</TABLE>



Summary of Combined Ratings (Unaudited)

<TABLE>
<CAPTION>



Fitch                or          Moody's               or        Standard & Poor's                           Value (%)
- ------------------------------------------------------------------------------------------------------------------------------------

<S>                              <C>                             <C>                                              <C>
F1+/F1                           VMIG1/MIG1, P1                  SP1+/SP1, A1+/A1                                 79.0

AAA/AA (b)                       Aaa/Aa (b)                      AAA/AA (b)                                        8.1

Not Rated (c)                    Not Rated (c)                   Not Rated (c)                                    12.9

                                                                                                                 100.0

(A)  SECURITIES  PAYABLE ON DEMAND.  VARIABLE INTEREST  RATE-SUBJECT TO PERIODIC
     CHANGE.

(B)  NOTES WHICH ARE NOT F, MIG OR SP RATED ARE  REPRESENTED  BY BOND RATINGS OF
     THE ISSUERS.


(C)  SECURITIES  WHICH,  WHILE NOT RATED BY FITCH,  MOODY'S OR STANDARD & POOR'S
     HAVE BEEN  DETERMINED BY THE MANAGER TO BE OF  COMPARABLE  QUALITY TO THOSE
     RATED SECURITIES IN WHICH THE FUND MAY INVEST.


SEE NOTES TO FINANCIAL STATEMENTS.
</TABLE>



                                                             The Fund

<PAGE>


STATEMENT OF ASSETS AND LIABILITIES

January 31, 2000

                                                             Cost         Value
- --------------------------------------------------------------------------------

ASSETS ($):

Investments in securities--See Statement of
Investments                                           426,160,150   426,160,150

Cash                                                                  3,268,170

Interest receivable                                                   3,465,400

Prepaid expenses and other assets                                        25,436


                                                                     432,919,156
- --------------------------------------------------------------------------------


LIABILITIES ($):

Due to The Dreyfus Corporation and affiliates                           204,882

Payable for investment securities purchased                           1,102,736

Accrued expenses and other liabilities                                   68,400


                                                                       1,376,018
- --------------------------------------------------------------------------------

NET ASSETS ($)                                                       431,543,138
- --------------------------------------------------------------------------------


COMPOSITION OF NET ASSETS ($):

Paid-in capital                                                     431,785,459

Accumulated net realized gain (loss) on investments                   (242,321)
- --------------------------------------------------------------------------------

NET ASSETS ($)                                                      431,543,138
- --------------------------------------------------------------------------------

SHARES OUTSTANDING

(2 billion shares of $.001 par value Common Stock authorized)       431,785,459

NET ASSET VALUE, offering and redemption price per share ($)               1.00

SEE NOTES TO FINANCIAL STATEMENTS.


<PAGE>


STATEMENT OF OPERATIONS

Year Ended January 31, 2000

- --------------------------------------------------------------------------------

INVESTMENT INCOME ($):

INTEREST INCOME                                                     14,603,276

EXPENSES:

Management fee--Note 2(a)                                            2,307,099

Shareholder servicing costs--Note 2(b)                                 579,332

Custodian fees                                                          47,599

Professional fees                                                       44,667

Directors' fees and expenses--Note 2(c)                                 36,830

Prospectus and shareholders' reports                                    20,873

Registration fees                                                       12,834

Miscellaneous                                                           10,364

TOTAL EXPENSES                                                       3,059,598

INVESTMENT INCOME--NET, representing net increase in net assets


   resulting from operations                                        11,543,678


SEE NOTES TO FINANCIAL STATEMENTS.

                                                             The Fund

<PAGE>


STATEMENT OF CHANGES IN NET ASSETS

                                                       Year Ended January 31,
                                                    ---------------------------

                                                     2000               1999
- --------------------------------------------------------------------------------

OPERATIONS ($):

Investment income--net                         11,543,678           13,110,679

Net realized gain (loss) from investments              --             (62,972)


NET INCREASE (DECREASE) IN NET ASSETS
   RESULTING FROM OPERATIONS                  11,543,678           13,047,707
- --------------------------------------------------------------------------------


DIVIDENDS TO SHAREHOLDERS FROM ($):

INVESTMENT INCOME--NET                       (11,543,678)         (13,110,679)
- --------------------------------------------------------------------------------

CAPITAL STOCK TRANSACTIONS ($1.00 per share):

Net proceeds from shares sold                 529,895,068         674,108,432

Dividends reinvested                           10,241,115          11,791,866

Cost of shares redeemed                     (583,639,144)        (737,057,088)


INCREASE (DECREASE) IN NET ASSETS FROM
   CAPITAL STOCK TRANSACTIONS                (43,502,961)         (51,156,790)

TOTAL INCREASE (DECREASE) IN NET ASSETS      (43,502,961)         (51,219,762)
- --------------------------------------------------------------------------------


NET ASSETS ($):

Beginning of period                           475,046,099          526,265,861

END OF PERIOD                                 431,543,138          475,046,099

SEE NOTES TO FINANCIAL STATEMENTS.


<PAGE>


FINANCIAL HIGHLIGHTS

The  following table describes the performance for the fiscal periods indicated.
Total return shows how much your investment in the fund would have increased (or
decreased)  during  each  period,  assuming you had reinvested all dividends and
distributions.  These  figures  have  been  derived  from  the  fund's financial
statements.

<TABLE>
<CAPTION>


                                                                                         Year Ended January 31,
                                                                --------------------------------------------------------------------


                                                                 2000          1999           1998          1997          1996
- ------------------------------------------------------------------------------------------------------------------------------------

<S>                                                              <C>           <C>            <C>           <C>           <C>
PER SHARE DATA ($):

Net asset value, beginning of period                             1.00          1.00           1.00          1.00          1.00

Investment Operations:

Investment income--net                                            .025          .027           .029          .027          .032

Distributions:

Dividends from investment income--net                            (.025)        (.027)         (.029)        (.027)        (.032)

Net asset value, end of period                                   1.00          1.00           1.00          1.00          1.00
- ------------------------------------------------------------------------------------------------------------------------------------

TOTAL RETURN (%)                                                 2.54          2.69           2.96          2.75          3.25
- ------------------------------------------------------------------------------------------------------------------------------------


RATIOS/SUPPLEMENTAL DATA (%):


Ratio of expenses to average net assets                           .66           .67            .64           .65           .59


Ratio of net investment income


   to average net assets                                         2.50          2.65           2.92          2.71          3.21


Decrease reflected in above expense


   ratios due to undertakings by
   The Dreyfus Corporation                                         --           --             --             --           .06
- ------------------------------------------------------------------------------------------------------------------------------------

Net Assets, end of period ($ x 1,000)                         431,543       475,046        526,266       561,260       647,557


SEE NOTES TO FINANCIAL STATEMENTS.
</TABLE>


                                                             The Fund

<PAGE>


NOTES TO FINANCIAL STATEMENTS

NOTE 1--Significant Accounting Policies:

Dreyfus  New Jersey Municipal Money Market Fund, Inc. (the "fund") is registered
under  the  Investment  Company  Act  of  1940,  as  amended  (the  "Act"), as a
non-diversified  open-end  management  investment company. The fund's investment
objective  is to provide investors with as high a level of current income exempt
from  Federal  and  New  Jersey  State  income  taxes  as is consistent with the
preservation   of   capital  and  the  maintenance  of  liquidity.  The  Dreyfus
Corporation (the "Manager") serves as the fund's investment adviser. The Manager
is  a direct subsidiary of Mellon Bank, N.A., which is a wholly-owned subsidiary
of  Mellon  Financial  Corporation.  Premier  Mutual  Fund Services, Inc. is the
distributor  of  the fund's shares, which are sold to the public without a sales
charge.

It  is  the  fund's policy to maintain a continuous net asset value per share of
$1.00; the fund has adopted certain investment, portfolio valuation and dividend
and distribution policies to enable it to do so. There is no assurance, however,
that  the  fund  will  be able to maintain a stable net asset value per share of
$1.00.

The  fund' s  financial  statements  are  prepared  in accordance with generally
accepted accounting principles which may require the use of management estimates
and assumptions. Actual results could differ from those estimates.

(a) Portfolio valuation: Investments in securities are valued at amortized cost,
which has been determined by the fund's Board of Directors to represent the fair
value of the fund's investments.

(b)  Securities  transactions and investment income: Securities transactions are
recorded  on  a  trade date basis. Interest income, adjusted for amortization of
premiums,  is  earned  from settlement date and recognized on the accrual basis.
Realized  gain  and  loss  from  securities  transactions  are  recorded  on the
identified  cost  basis.  Under  the  terms  of  the custody agreement, the fund
received  net  earnings  credits  of $28,702 during the period ended January 31,
2000  based on available cash balances left on deposit. Income earned under this
arrangement is included in interest income.


<PAGE>


The  fund  follows  an  investment  policy  of  investing primarily in municipal
obligations  of  one  state. Economic changes affecting the state and certain of
its  public  bodies  and municipalities may affect the ability of issuers within
the  state to pay interest on, or repay principal of, municipal obligations held
by the fund.

(c) Dividends to shareholders: It is the policy of the fund to declare dividends
daily  from  investment  income-net.  Such dividends are paid monthly. Dividends
from net realized capital gain, if any, are normally declared and paid annually,
but  the fund may make distributions on a more frequent basis to comply with the
distribution  requirements of the Internal Revenue Code of 1986, as amended (the
" Code" ). To the extent that net realized capital gain can be offset by capital
loss carryovers, it is the policy of the fund not to distribute such gain.

(d) Federal income taxes: It is the policy of the fund to continue to qualify as
a  regulated  investment  company, which can distribute tax exempt dividends, by
complying  with the applicable provisions of the Code, and to make distributions
of  income  and  net  realized  capital  gain  sufficient  to  relieve  it  from
substantially all Federal income and excise taxes.

The  fund  has  an  unused  capital  loss  carryover  of  approximately $241,300
available  for  Federal  income  tax  purposes  to be applied against future net
securities  profits,  if  any,  realized  subsequent to January 31, 2000. If not
applied,  $2,300  of  the  carryover  expires in fiscal 2002, $40,000 expires in
fiscal  2003,  $115,000  expires  in fiscal 2004, $4,000 expires in fiscal 2005,
$17,000 expires in fiscal 2006 and $63,000 expires in fiscal 2007.

At January 31, 2000, the cost of investments for Federal income tax purposes was
substantially  the  same  as  the cost for financial reporting purposes (see the
Statement of Investments).

NOTE 2--Management Fee and Other Transactions with Affiliates:

(a)  Pursuant  to a management agreement with the Manager, the management fee is
computed  at  the  annual  rate  of .50 of 1% of the value of the fund's average
daily net assets and is payable monthly.

                                                              The Fund

<PAGE>


NOTES TO FINANCIAL STATEMENTS (CONTINUED)

(b)  Under  the  Shareholder  Services Plan, the fund reimburses Dreyfus Service
Corporation,  a  wholly-owned subsidiary of the Manager, an amount not to exceed
an  annual rate of .25 of 1% of the value of the fund's average daily net assets
for certain allocated expenses of providing personal services and/or maintaining
shareholder  accounts.  The  services  provided  may  include  personal services
relating  to  shareholder  accounts,  such  as  answering  shareholder inquiries
regarding  the  fund  and  providing reports and other information, and services
related  to  the  maintenance  of  shareholder accounts. During the period ended
January  31,  2000,  the  fund  was charged $320,451 pursuant to the Shareholder
Services Plan.

The  fund  compensates  Dreyfus Transfer, Inc., a wholly owned subsidiary of the
Manager,  under  a  transfer  agency  agreement,  for  providing  personnel  and
facilities  to  perform transfer agency services for the fund. During the period
ended  January  31, 2000, the fund was charged $178,203 pursuant to the transfer
agency agreement.

(c)  Each  director  who  is  not  an  "affiliated person" as defined in the Act
receives from the fund an annual fee of $2,500 and an attendance fee of $500 per
meeting.  The  Chairman  of  the  Board  receives  an  additional  25%  of  such
compensation.

NOTE 3--Subsequent Event:

At  a  meeting  of  the  fund's Board of Directors held on January 19, 2000, the
Board approved the termination of the fund's Distribution Agreement with Premier
Mutual  Fund  Services  Inc.,  and  approved  a  new Distribution Agreement with
Dreyfus Service Corporation. The new Distribution Agreement with Dreyfus Service
Corporation is slated for effectiveness on March 16, 2000.


<PAGE>


REPORT OF INDEPENDENT AUDITORS

Shareholders and Board of Directors

Dreyfus New Jersey Municipal Money Market Fund, Inc.

We  have audited the accompanying statement of assets and liabilities of Dreyfus
New  Jersey  Municipal  Money  Market  Fund,  Inc.,  including  the statement of
investments, as of January 31, 2000, and the related statement of operations for
the  year then ended, the statement of changes in net assets for each of the two
years  in  the period then ended, and financial highlights for each of the years
indicated  therein.  These financial statements and financial highlights are the
responsibility  of  the  Fund' s management. Our responsibility is to express an
opinion  on  these  financial  statements  and financial highlights based on our
audits.

We conducted our audits in accordance with auditing standards generally accepted
in the United States. Those standards require that we plan and perform the audit
to  obtain  reasonable  assurance  about  whether  the  financial statements and
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 and the financial highlights. Our procedures included
confirmation  of  securities owned as of January 31, 2000 by correspondence with
the  custodian  and  brokers.  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,  the financial statements and financial highlights referred to
above  present  fairly,  in  all  material  respects,  the financial position of
Dreyfus  New  Jersey  Municipal Money Market Fund, Inc. at January 31, 2000, the
results of its operations for the year then ended, the changes in its net assets
for each of the two years in the period then ended, and the financial highlights
for  each  of  the  indicated  years,  in  conformity with accounting principles
generally accepted in the United States.


New York, New York

March 6, 2000

                                                             The Fund



<PAGE>

IMPORTANT TAX INFORMATION (Unaudited)

In accordance with Federal tax law, the fund hereby designates all the dividends
paid from investment income-net during the fiscal year ended January 31, 2000 as
"exempt-interest dividends" (not subject to regular Federal and, for individuals
who are New Jersey residents, New Jersey personal income taxes).


<PAGE>


NOTES

<PAGE>


                                                           For More Information

                        Dreyfus New Jersey Municipal Money Market Fund, Inc.

                        200 Park Avenue

                        New York, NY 10166

                        Manager

                        The Dreyfus Corporation

                        200 Park Avenue

                        New York, NY 10166

                        Custodian

                        The Bank of New York

                        100 Church Street

                        New York, NY 10286

                        Transfer Agent &

                        Dividend Disbursing Agent

                        Dreyfus Transfer, Inc.

                        P.O. Box 9671

                        Providence, RI 02940

                        Distributor

                        Dreyfus Service Corporation

                        200 Park Avenue

                        New York, NY 10166

To obtain information:

BY TELEPHONE Call 1-800-645-6561

BY MAIL  Write to:  The Dreyfus Family of Funds 144 Glenn Curtiss Boulevard
Uniondale, NY 11556-0144

BY E-MAIL  Send your request to [email protected]

ON THE INTERNET  Information can be viewed online or downloaded from:

http://www.dreyfus.com

(c) 2000 Dreyfus Service Corporation                                   758AR001



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