<PAGE> PAGE 1
000 A000000 05/31/95
000 C000000 106830
000 D000000 N
000 E000000 NF
000 F000000 Y
000 G000000 N
000 H000000 N
000 I000000 3.0.a
000 J000000 U
001 A000000 VANGUARD MONEY MARKET RESERVES, INC.
001 B000000 811-2554
001 C000000 6106691000
002 A000000 100 VANGUARD BOULEVARD
002 B000000 MALVERN
002 C000000 PA
002 D010000 19355
003 000000 N
004 000000 N
005 000000 N
006 000000 N
007 A000000 Y
007 B000000 3
007 C010100 1
007 C020100 PRIME PORTFOLIO
007 C030100 N
007 C010200 2
007 C020200 FEDERAL PORTFOLIO
007 C030200 N
007 C010300 3
007 C020300 U.S. TREASURY PORTFOLIO
007 C030300 N
007 C010400 4
007 C010500 5
007 C010600 6
007 C010700 7
007 C010800 8
007 C010900 9
007 C011000 10
018 00AA00 Y
019 A00AA00 Y
019 B00AA00 86
019 C00AA00 VANGUARDGR
020 C000001 0
020 C000002 0
020 C000003 0
020 C000004 0
020 C000005 0
020 C000006 0
020 C000007 0
020 C000008 0
020 C000009 0
<PAGE> PAGE 2
020 C000010 0
021 000000 0
022 A000001 EASTBRIDGE CAPITAL, INC.
022 B000001 13-3501117
022 C000001 16297156
022 D000001 0
022 A000002 GOLDMAN SACHS & CO.
022 B000002 13-5108880
022 C000002 11982352
022 D000002 297716
022 A000003 LEHMAN BROTHERS INC.
022 B000003 13-2518466
022 C000003 11006454
022 D000003 643651
022 A000004 MERRILL LYNCH PIERCE FENNER & SMITH
022 B000004 13-5674085
022 C000004 6256697
022 D000004 385286
022 A000005 CITICORP SECURITIES
022 B000005 13-6164161
022 C000005 6482994
022 D000005 0
022 A000006 FIRST BOSTON CORP.
022 B000006 13-5659485
022 C000006 4319121
022 D000006 896764
022 A000007 BARCLAYS DEZOETE WEDD SECURITIES, INC.
022 B000007 13-3410233
022 C000007 3295386
022 D000007 1021570
022 A000008 CHASE SECURITIES, INC.
022 B000008 13-3112953
022 C000008 3942112
022 D000008 0
022 A000009 BT SECURITIES CORPORATION
022 B000009 13-3311934
022 C000009 3702952
022 D000009 0
022 A000010 SWISS BANK CORP.
022 C000010 2747322
022 D000010 138700
023 C000000 111094636
023 D000000 4823357
077 A000000 Y
077 B000000 N
077 C000000 Y
077 D000000 N
077 E000000 N
077 F000000 N
077 G000000 N
077 H000000 N
<PAGE> PAGE 3
077 I000000 N
077 J000000 N
077 K000000 N
077 L000000 N
077 M000000 N
077 N000000 N
077 O000000 N
077 P000000 N
077 Q010000 N
077 Q020000 N
077 Q030000 N
078 000000 N
028 A010100 1815179
028 A020100 67059
028 A030100 0
028 A040100 1669753
028 B010100 1992669
028 B020100 71068
028 B030100 0
028 B040100 1506217
028 C010100 1426854
028 C020100 66882
028 C030100 0
028 C040100 1445409
028 D010100 1817702
028 D020100 76129
028 D030100 0
028 D040100 1482417
028 E010100 1479174
028 E020100 75830
028 E030100 0
028 E040100 1398763
028 F010100 1707005
028 F020100 79023
028 F030100 0
028 F040100 1347107
028 G010100 10238583
028 G020100 435991
028 G030100 0
028 G040100 8849666
028 H000100 0
062 A000100 Y
062 B000100 0.0
062 C000100 12.5
062 D000100 0.0
062 E000100 0.0
062 F000100 21.4
062 G000100 4.5
062 H000100 0.9
062 I000100 57.6
062 J000100 0.0
<PAGE> PAGE 4
062 K000100 0.0
062 L000100 3.2
062 M000100 0.0
062 N000100 1.6
062 O000100 0.0
062 P000100 0.0
062 Q000100 0.0
062 R000100 -1.7
063 A000100 41
063 B000100 0.0
064 A000100 N
070 A010100 Y
070 A020100 Y
070 B010100 N
070 B020100 N
070 C010100 N
070 C020100 N
070 D010100 N
070 D020100 N
070 E010100 N
070 E020100 N
070 F010100 N
070 F020100 N
070 G010100 N
070 G020100 N
070 H010100 N
070 H020100 N
070 I010100 N
070 I020100 N
070 J010100 Y
070 J020100 N
070 K010100 N
070 K020100 N
070 L010100 Y
070 L020100 Y
070 M010100 N
070 M020100 N
070 N010100 Y
070 N020100 N
070 O010100 Y
070 O020100 N
070 P010100 N
070 P020100 N
070 Q010100 N
070 Q020100 N
070 R010100 N
070 R020100 N
071 A000100 0
071 B000100 0
071 C000100 0
071 D000100 0
<PAGE> PAGE 5
072 A000100 6
072 B000100 482454
072 C000100 0
072 D000100 0
072 E000100 0
072 F000100 984
072 G000100 8663
072 H000100 0
072 I000100 12181
072 J000100 229
072 K000100 0
072 L000100 254
072 M000100 29
072 N000100 0
072 O000100 647
072 P000100 0
072 Q000100 0
072 R000100 11
072 S000100 0
072 T000100 2142
072 U000100 0
072 V000100 322
072 W000100 0
072 X000100 25462
072 Y000100 0
072 Z000100 456992
072AA000100 16
072BB000100 69
072CC010100 0
072CC020100 0
072DD010100 456992
072DD020100 0
072EE000100 0
073 A010100 0.0290
073 A020100 0.0000
073 B000100 0.0000
073 C000100 0.0000
074 A000100 0
074 B000100 0
074 C000100 16959065
074 D000100 266721
074 E000100 0
074 F000100 0
074 G000100 0
074 H000100 0
074 I000100 2317
074 J000100 0
074 K000100 0
074 L000100 172446
074 M000100 0
074 N000100 17400549
<PAGE> PAGE 6
074 O000100 383095
074 P000100 0
074 Q000100 0
074 R010100 0
074 R020100 0
074 R030100 0
074 R040100 83882
074 S000100 0
074 T000100 16933572
074 U010100 16933439
074 U020100 0
074 V010100 1.00
074 V020100 0.00
074 W000100 1.0000
074 X000100 779528
074 Y000100 0
075 A000100 15966966
075 B000100 0
076 000100 0.00
028 A010200 172324
028 A020200 9462
028 A030200 0
028 A040200 186371
028 B010200 195351
028 B020200 9855
028 B030200 0
028 B040200 170450
028 C010200 170079
028 C020200 9374
028 C030200 0
028 C040200 147431
028 D010200 217140
028 D020200 10718
028 D030200 0
028 D040200 150431
028 E010200 147461
028 E020200 10574
028 E030200 0
028 E040200 153504
028 F010200 199966
028 F020200 11235
028 F030200 0
028 F040200 131490
028 G010200 1102321
028 G020200 61218
028 G030200 0
028 G040200 939677
028 H000200 0
062 A000200 Y
062 B000200 0.0
062 C000200 92.8
<PAGE> PAGE 7
062 D000200 6.1
062 E000200 0.0
062 F000200 0.0
062 G000200 0.0
062 H000200 0.0
062 I000200 0.0
062 J000200 0.0
062 K000200 0.0
062 L000200 0.0
062 M000200 0.0
062 N000200 0.0
062 O000200 0.0
062 P000200 0.0
062 Q000200 0.0
062 R000200 1.1
063 A000200 40
063 B000200 0.0
064 A000200 N
070 A010200 Y
070 A020200 Y
070 B010200 N
070 B020200 N
070 C010200 N
070 C020200 N
070 D010200 N
070 D020200 N
070 E010200 N
070 E020200 N
070 F010200 N
070 F020200 N
070 G010200 N
070 G020200 N
070 H010200 N
070 H020200 N
070 I010200 N
070 I020200 N
070 J010200 N
070 J020200 N
070 K010200 N
070 K020200 N
070 L010200 N
070 L020200 N
070 M010200 N
070 M020200 N
070 N010200 Y
070 N020200 N
070 O010200 Y
070 O020200 N
070 P010200 N
070 P020200 N
070 Q010200 N
<PAGE> PAGE 8
070 Q020200 N
070 R010200 N
070 R020200 N
071 A000200 0
071 B000200 0
071 C000200 0
071 D000200 0
072 A000200 6
072 B000200 67912
072 C000200 0
072 D000200 0
072 E000200 0
072 F000200 142
072 G000200 1305
072 H000200 0
072 I000200 1611
072 J000200 46
072 K000200 0
072 L000200 38
072 M000200 4
072 N000200 0
072 O000200 107
072 P000200 0
072 Q000200 0
072 R000200 4
072 S000200 0
072 T000200 309
072 U000200 0
072 V000200 47
072 W000200 0
072 X000200 3613
072 Y000200 0
072 Z000200 64299
072AA000200 17
072BB000200 0
072CC010200 0
072CC020200 0
072DD010200 64299
072DD020200 0
072EE000200 0
073 A010200 0.0280
073 A020200 0.0000
073 B000200 0.0000
073 C000200 0.0000
074 A000200 0
074 B000200 147810
074 C000200 2246438
074 D000200 0
074 E000200 0
074 F000200 0
074 G000200 0
<PAGE> PAGE 9
074 H000200 0
074 I000200 330
074 J000200 0
074 K000200 0
074 L000200 33893
074 M000200 0
074 N000200 2428471
074 O000200 0
074 P000200 0
074 Q000200 0
074 R010200 0
074 R020200 0
074 R030200 0
074 R040200 8168
074 S000200 0
074 T000200 2420303
074 U010200 2420180
074 U020200 0
074 V010200 1.00
074 V020200 0.00
074 W000200 1.0001
074 X000200 120750
074 Y000200 0
075 A000200 2265534
075 B000200 0
076 000200 0.00
028 A010300 249101
028 A020300 8345
028 A030300 0
028 A040300 204672
028 B010300 243289
028 B020300 8916
028 B030300 0
028 B040300 221709
028 C010300 199649
028 C020300 8481
028 C030300 0
028 C040300 174324
028 D010300 267756
028 D020300 9779
028 D030300 0
028 D040300 221381
028 E010300 189930
028 E020300 9788
028 E030300 0
028 E040300 176330
028 F010300 215814
028 F020300 10170
028 F030300 0
028 F040300 183030
028 G010300 1365539
<PAGE> PAGE 10
028 G020300 55479
028 G030300 0
028 G040300 1181446
028 H000300 0
062 A000300 Y
062 B000300 104.4
062 C000300 0.0
062 D000300 0.0
062 E000300 0.0
062 F000300 0.0
062 G000300 0.0
062 H000300 0.0
062 I000300 0.0
062 J000300 0.0
062 K000300 0.0
062 L000300 0.0
062 M000300 0.0
062 N000300 0.0
062 O000300 0.0
062 P000300 0.0
062 Q000300 0.0
062 R000300 -4.4
063 A000300 40
063 B000300 0.0
064 A000300 N
070 A010300 N
070 A020300 N
070 B010300 N
070 B020300 N
070 C010300 N
070 C020300 N
070 D010300 N
070 D020300 N
070 E010300 N
070 E020300 N
070 F010300 N
070 F020300 N
070 G010300 N
070 G020300 N
070 H010300 N
070 H020300 N
070 I010300 N
070 I020300 N
070 J010300 N
070 J020300 N
070 K010300 N
070 K020300 N
070 L010300 N
070 L020300 N
070 M010300 N
070 M020300 N
<PAGE> PAGE 11
070 N010300 Y
070 N020300 N
070 O010300 Y
070 O020300 N
070 P010300 N
070 P020300 N
070 Q010300 N
070 Q020300 N
070 R010300 N
070 R020300 N
071 A000300 0
071 B000300 0
071 C000300 0
071 D000300 0
072 A000300 6
072 B000300 61589
072 C000300 0
072 D000300 0
072 E000300 0
072 F000300 137
072 G000300 1446
072 H000300 0
072 I000300 1379
072 J000300 30
072 K000300 0
072 L000300 31
072 M000300 4
072 N000300 0
072 O000300 86
072 P000300 0
072 Q000300 0
072 R000300 4
072 S000300 0
072 T000300 295
072 U000300 0
072 V000300 50
072 W000300 0
072 X000300 3462
072 Y000300 0
072 Z000300 58127
072AA000300 151
072BB000300 100
072CC010300 0
072CC020300 0
072DD010300 58127
072DD020300 0
072EE000300 0
073 A010300 0.0270
073 A020300 0.0000
073 B000300 0.0000
073 C000300 0.0000
<PAGE> PAGE 12
074 A000300 1
074 B000300 0
074 C000300 2396544
074 D000300 0
074 E000300 0
074 F000300 0
074 G000300 0
074 H000300 0
074 I000300 317
074 J000300 226501
074 K000300 0
074 L000300 25501
074 M000300 0
074 N000300 2648864
074 O000300 343164
074 P000300 0
074 Q000300 0
074 R010300 0
074 R020300 0
074 R030300 0
074 R040300 10020
074 S000300 0
074 T000300 2295680
074 U010300 2295437
074 U020300 0
074 V010300 1.00
074 V020300 0.00
074 W000300 1.0001
074 X000300 99145
074 Y000300 0
075 A000300 2171115
075 B000300 0
076 000300 0.00
SIGNATURE GARY P. SOURA
TITLE
<TABLE> <S> <C>
<ARTICLE> 6
<RESTATED>
<CIK> 0000106830
<NAME> VANGUARD MONEY MARKET RESERVES, INC.
<SERIES>
<NUMBER> 1
<NAME> PRIME PORTFOLIO
<MULTIPLIER> 1,000
<CURRENCY> US
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> NOV-30-1995
<PERIOD-START> DEC-01-1994
<PERIOD-END> MAY-31-1995
<EXCHANGE-RATE> 1
<INVESTMENTS-AT-COST> 17225786
<INVESTMENTS-AT-VALUE> 17225786
<RECEIVABLES> 172446
<ASSETS-OTHER> 2317
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 17400549
<PAYABLE-FOR-SECURITIES> 383095
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 83882
<TOTAL-LIABILITIES> 466977
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 16933437
<SHARES-COMMON-STOCK> 16933439
<SHARES-COMMON-PRIOR> 15108531
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 135
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 0
<NET-ASSETS> 16933572
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 482454
<OTHER-INCOME> 0
<EXPENSES-NET> 25462
<NET-INVESTMENT-INCOME> 456992
<REALIZED-GAINS-CURRENT> (53)
<APPREC-INCREASE-CURRENT> 0
<NET-CHANGE-FROM-OPS> 456939
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 456992
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 10238583
<NUMBER-OF-SHARES-REDEEMED> 8849666
<SHARES-REINVESTED> 435991
<NET-CHANGE-IN-ASSETS> 1824855
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 188
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 984
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 25462
<AVERAGE-NET-ASSETS> 15966966
<PER-SHARE-NAV-BEGIN> 1.00
<PER-SHARE-NII> 0.029
<PER-SHARE-GAIN-APPREC> 0
<PER-SHARE-DIVIDEND> 0.029
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 1.00
<EXPENSE-RATIO> 0.003
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<RESTATED>
<CIK> 0000106830
<NAME> VANGUARD MONEY MARKET RESERVES, INC.
<SERIES>
<NUMBER> 2
<NAME> FEDERAL PORTFOLIO
<MULTIPLIER> 1,000
<CURRENCY> US
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> NOV-30-1995
<PERIOD-START> DEC-01-1994
<PERIOD-END> MAY-31-1995
<EXCHANGE-RATE> 1
<INVESTMENTS-AT-COST> 2394248
<INVESTMENTS-AT-VALUE> 2394248
<RECEIVABLES> 33893
<ASSETS-OTHER> 330
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 2428471
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 8168
<TOTAL-LIABILITIES> 8168
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 2420209
<SHARES-COMMON-STOCK> 2420180
<SHARES-COMMON-PRIOR> 2196318
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 94
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 0
<NET-ASSETS> 2420303
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 67912
<OTHER-INCOME> 0
<EXPENSES-NET> 3613
<NET-INVESTMENT-INCOME> 67299
<REALIZED-GAINS-CURRENT> 17
<APPREC-INCREASE-CURRENT> 0
<NET-CHANGE-FROM-OPS> 64316
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 64299
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 1102322
<NUMBER-OF-SHARES-REDEEMED> 939677
<SHARES-REINVESTED> 61218
<NET-CHANGE-IN-ASSETS> 223879
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 77
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 142
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 3613
<AVERAGE-NET-ASSETS> 2265534
<PER-SHARE-NAV-BEGIN> 1.00
<PER-SHARE-NII> 0.028
<PER-SHARE-GAIN-APPREC> 0
<PER-SHARE-DIVIDEND> 0.028
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 1.00
<EXPENSE-RATIO> 0.003
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<RESTATED>
<CIK> 0000106830
<NAME> VANGUARD MONEY MARKET RESERVES, INC.
<SERIES>
<NUMBER> 3
<NAME> U.S. TREASURY PORTFOLIO
<MULTIPLIER> 1,000
<CURRENCY> US
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> NOV-30-1995
<PERIOD-START> DEC-01-1994
<PERIOD-END> MAY-31-1995
<EXCHANGE-RATE> 1
<INVESTMENTS-AT-COST> 2396544
<INVESTMENTS-AT-VALUE> 2396544
<RECEIVABLES> 252002
<ASSETS-OTHER> 318
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 2648864
<PAYABLE-FOR-SECURITIES> 343164
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 10020
<TOTAL-LIABILITIES> 353184
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 2295456
<SHARES-COMMON-STOCK> 2295437
<SHARES-COMMON-PRIOR> 2055866
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 224
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 0
<NET-ASSETS> 2295680
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 61589
<OTHER-INCOME> 0
<EXPENSES-NET> 3462
<NET-INVESTMENT-INCOME> 58127
<REALIZED-GAINS-CURRENT> 51
<APPREC-INCREASE-CURRENT> 0
<NET-CHANGE-FROM-OPS> 58178
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 58127
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 1365539
<NUMBER-OF-SHARES-REDEEMED> 1181446
<SHARES-REINVESTED> 55479
<NET-CHANGE-IN-ASSETS> 239623
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 173
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 137
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 3462
<AVERAGE-NET-ASSETS> 2171115
<PER-SHARE-NAV-BEGIN> 1.00
<PER-SHARE-NII> 0.027
<PER-SHARE-GAIN-APPREC> 0
<PER-SHARE-DIVIDEND> 0.027
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 1.00
<EXPENSE-RATIO> 0.003
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
