<PAGE> PAGE 1
000 B000000 11/30/94
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
010 A00AA01 THE VANGUARD GROUP, INC.
010 B00AA01 801-11953
010 C01AA01 MALVERN
010 C02AA01 PA
010 C03AA01 19355
012 A00AA01 THE VANGUARD GROUP, INC.
012 B00AA01 84-772
012 C01AA01 MALVERN
012 C02AA01 PA
012 C03AA01 19355
013 A00AA01 PRICE WATERHOUSE LLP
013 B01AA01 PHILADELPHIA
013 B02AA01 PA
<PAGE> PAGE 2
013 B03AA01 19103
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
020 C000010 0
021 000000 0
022 A000001 NATIONSBANC CAPITAL MARKETS INC.
022 B000001 56-1684171
022 C000001 17884444
022 D000001 300104
022 A000002 GOLDMAN SACHS & CO.
022 B000002 13-5108880
022 C000002 15255211
022 D000002 448428
022 A000003 EASTBRIDGE CAPITAL, INC.
022 B000003 13-3501117
022 C000003 14478864
022 D000003 3186
022 A000004 MERRILL LYNCH PIERCE FENNER & SMITH
022 B000004 13-5674085
022 C000004 14106008
022 D000004 169782
022 A000005 LEHMAN BROTHERS INC.
022 B000005 13-2518466
022 C000005 12687099
022 D000005 1203020
022 A000006 FIRST BOSTON CORP.
022 B000006 13-5659485
022 C000006 8436945
022 D000006 1216618
022 A000007 BARCLAYS DEZOETE WEDD SECURITIES, INC.
022 B000007 13-3410233
022 C000007 6323952
022 D000007 1476722
022 A000008 J.P. MORGAN SECURITIES, INC.
022 B000008 13-3224016
022 C000008 5199962
022 D000008 273692
022 A000009 BT SECURITIES CORPORATION
022 B000009 13-3311934
022 C000009 4664859
<PAGE> PAGE 3
022 D000009 14781
022 A000010 CITICORP SECURITIES
022 B000010 13-6164161
022 C000010 4169908
022 D000010 0
023 C000000 161203811
023 D000000 7253339
077 A000000 Y
077 B000000 Y
077 C000000 N
077 D000000 N
077 E000000 N
077 F000000 N
077 G000000 N
077 H000000 N
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
080 A00AA00 ICI MUTUAL INSURANCE COMPANY
080 C00AA00 130000
081 A00AA00 Y
081 B00AA00 107
082 A00AA00 N
082 B00AA00 0
083 A00AA00 N
083 B00AA00 0
084 A00AA00 N
084 B00AA00 0
085 A00AA00 Y
085 B00AA00 N
028 A010100 1252855
028 A020100 40825
028 A030100 0
028 A040100 1400649
028 B010100 1265108
028 B020100 45293
028 B030100 0
028 B040100 1021757
028 C010100 1358346
028 C020100 47890
028 C030100 0
028 C040100 1279160
<PAGE> PAGE 4
028 D010100 1445603
028 D020100 49570
028 D030100 0
028 D040100 1180631
028 E010100 1560157
028 E020100 54706
028 E030100 0
028 E040100 1155482
028 F010100 1849766
028 F020100 57273
028 F030100 0
028 F040100 1279852
028 G010100 8731835
028 G020100 295557
028 G030100 0
028 G040100 7317531
028 H000100 0
062 A000100 Y
062 B000100 0.0
062 C000100 15.0
062 D000100 0.6
062 E000100 0.0
062 F000100 16.1
062 G000100 4.3
062 H000100 0.3
062 I000100 59.4
062 J000100 0.0
062 K000100 0.0
062 L000100 4.0
062 M000100 0.0
062 N000100 0.0
062 O000100 0.0
062 P000100 0.0
062 Q000100 0.0
062 R000100 0.3
063 A000100 38
063 B000100 0.0
064 A000100 N
071 A000100 0
071 B000100 0
071 C000100 0
071 D000100 0
072 A000100 12
072 B000100 552670
072 C000100 0
072 D000100 0
072 E000100 0
072 F000100 1460
072 G000100 11106
072 H000100 0
072 I000100 24284
<PAGE> PAGE 5
072 J000100 380
072 K000100 0
072 L000100 521
072 M000100 67
072 N000100 0
072 O000100 1075
072 P000100 0
072 Q000100 0
072 R000100 21
072 S000100 0
072 T000100 3553
072 U000100 0
072 V000100 39
072 W000100 0
072 X000100 42506
072 Y000100 0
072 Z000100 510164
072AA000100 53
072BB000100 150
072CC010100 0
072CC020100 0
072DD010100 510164
072DD020100 0
072EE000100 0
073 A010100 0.0380
073 A020100 0.0000
073 B000100 0.0000
073 C000100 0.0000
074 A000100 259
074 B000100 84768
074 C000100 14984341
074 D000100 0
074 E000100 0
074 F000100 0
074 G000100 0
074 H000100 0
074 I000100 2360
074 J000100 0
074 K000100 0
074 L000100 136631
074 M000100 0
074 N000100 15208359
074 O000100 19796
074 P000100 9323
074 Q000100 0
074 R010100 0
074 R020100 0
074 R030100 0
074 R040100 70523
074 S000100 0
074 T000100 15108717
<PAGE> PAGE 6
074 U010100 15108531
074 U020100 0
074 V010100 1.00
074 V020100 0.00
074 W000100 1.0000
074 X000100 724370
074 Y000100 0
075 A000100 13277829
075 B000100 0
076 000100 0.00
028 A010200 130098
028 A020200 6114
028 A030200 0
028 A040200 154292
028 B010200 152358
028 B020200 6809
028 B030200 0
028 B040200 121161
028 C010200 139058
028 C020200 7193
028 C030200 0
028 C040200 126481
028 D010200 138015
028 D020200 7294
028 D030200 0
028 D040200 135237
028 E010200 152723
028 E020200 7956
028 E030200 0
028 E040200 114276
028 F010200 170945
028 F020200 8269
028 F030200 0
028 F040200 128150
028 G010200 883197
028 G020200 43635
028 G030200 0
028 G040200 779597
028 H000200 0
062 A000200 Y
062 B000200 0.0
062 C000200 85.9
062 D000200 15.8
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
<PAGE> PAGE 7
062 M000200 0.0
062 N000200 0.0
062 O000200 0.0
062 P000200 0.0
062 Q000200 0.0
062 R000200 -1.7
063 A000200 39
063 B000200 0.0
064 A000200 N
071 A000200 0
071 B000200 0
071 C000200 0
071 D000200 0
072 A000200 12
072 B000200 83281
072 C000200 0
072 D000200 0
072 E000200 0
072 F000200 224
072 G000200 2179
072 H000200 0
072 I000200 3213
072 J000200 74
072 K000200 0
072 L000200 78
072 M000200 10
072 N000200 0
072 O000200 164
072 P000200 0
072 Q000200 0
072 R000200 9
072 S000200 0
072 T000200 547
072 U000200 0
072 V000200 6
072 W000200 0
072 X000200 6504
072 Y000200 0
072 Z000200 76777
072AA000200 31
072BB000200 86
072CC010200 0
072CC020200 0
072DD010200 76777
072DD020200 0
072EE000200 0
073 A010200 0.0380
073 A020200 0.0000
073 B000200 0.0000
073 C000200 0.0000
074 A000200 0
<PAGE> PAGE 8
074 B000200 346943
074 C000200 1886352
074 D000200 0
074 E000200 0
074 F000200 0
074 G000200 0
074 H000200 0
074 I000200 342
074 J000200 0
074 K000200 0
074 L000200 11784
074 M000200 0
074 N000200 2245421
074 O000200 36288
074 P000200 1403
074 Q000200 0
074 R010200 0
074 R020200 0
074 R030200 0
074 R040200 11306
074 S000200 0
074 T000200 2196424
074 U010200 2196318
074 U020200 0
074 V010200 1.00
074 V020200 0.00
074 W000200 1.0000
074 X000200 110564
074 Y000200 0
075 A000200 2030763
075 B000200 0
076 000200 0.00
028 A010300 138827
028 A020300 5713
028 A030300 0
028 A040300 153601
028 B010300 155599
028 B020300 6231
028 B030300 0
028 B040300 139362
028 C010300 159481
028 C020300 6459
028 C030300 0
028 C040300 169556
028 D010300 163164
028 D020300 6583
028 D030300 0
028 D040300 149900
028 E010300 178890
028 E020300 7110
028 E030300 0
<PAGE> PAGE 9
028 E040300 178756
028 F010300 195860
028 F020300 7431
028 F030300 0
028 F040300 167442
028 G010300 991821
028 G020300 39527
028 G030300 0
028 G040300 958617
028 H000300 0
062 A000300 Y
062 B000300 102.1
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 -2.1
063 A000300 38
063 B000300 0.0
064 A000300 N
071 A000300 0
071 B000300 0
071 C000300 0
071 D000300 0
072 A000300 12
072 B000300 75370
072 C000300 0
072 D000300 0
072 E000300 0
072 F000300 212
072 G000300 2558
072 H000300 0
072 I000300 2563
072 J000300 56
072 K000300 0
072 L000300 64
072 M000300 9
072 N000300 0
072 O000300 154
072 P000300 0
<PAGE> PAGE 10
072 Q000300 0
072 R000300 9
072 S000300 0
072 T000300 517
072 U000300 0
072 V000300 21
072 W000300 0
072 X000300 6163
072 Y000300 0
072 Z000300 69207
072AA000300 167
072BB000300 191
072CC010300 0
072CC020300 0
072DD010300 69207
072DD020300 0
072EE000300 0
073 A010300 0.0360
073 A020300 0.0000
073 B000300 0.0000
073 C000300 0.0000
074 A000300 450
074 B000300 0
074 C000300 2098327
074 D000300 0
074 E000300 0
074 F000300 0
074 G000300 0
074 H000300 0
074 I000300 320
074 J000300 0
074 K000300 0
074 L000300 17074
074 M000300 0
074 N000300 2116171
074 O000300 49300
074 P000300 1178
074 Q000300 0
074 R010300 0
074 R020300 0
074 R030300 0
074 R040300 9636
074 S000300 0
074 T000300 2056057
074 U010300 2055866
074 U020300 0
074 V010300 1.00
074 V020300 0.00
074 W000300 1.0001
074 X000300 89658
074 Y000300 0
<PAGE> PAGE 11
075 A000300 1926692
075 B000300 0
076 000300 0.00
SIGNATURE GARY P. SOURA
TITLE ASST. VICE PRESIDENT
<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> YEAR
<FISCAL-YEAR-END> NOV-30-1994
<PERIOD-START> DEC-01-1993
<PERIOD-END> NOV-30-1994
<EXCHANGE-RATE> 1
<INVESTMENTS-AT-COST> 15069109
<INVESTMENTS-AT-VALUE> 15069109
<RECEIVABLES> 136631
<ASSETS-OTHER> 2619
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 15208359
<PAYABLE-FOR-SECURITIES> 19796
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 79846
<TOTAL-LIABILITIES> 99642
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 15108529
<SHARES-COMMON-STOCK> 15108531
<SHARES-COMMON-PRIOR> 12366953
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 188
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 0
<NET-ASSETS> 15108717
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 552670
<OTHER-INCOME> 0
<EXPENSES-NET> 42506
<NET-INVESTMENT-INCOME> 510164
<REALIZED-GAINS-CURRENT> (97)
<APPREC-INCREASE-CURRENT> 0
<NET-CHANGE-FROM-OPS> 510067
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 510164
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 17731785
<NUMBER-OF-SHARES-REDEEMED> 15479781
<SHARES-REINVESTED> 489573
<NET-CHANGE-IN-ASSETS> 2741480
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 285
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 1460
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 42506
<AVERAGE-NET-ASSETS> 13277829
<PER-SHARE-NAV-BEGIN> 1.000
<PER-SHARE-NII> 0.038
<PER-SHARE-GAIN-APPREC> 0.000
<PER-SHARE-DIVIDEND> 0.038
<PER-SHARE-DISTRIBUTIONS> 0.000
<RETURNS-OF-CAPITAL> 0.000
<PER-SHARE-NAV-END> 1.000
<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> YEAR
<FISCAL-YEAR-END> NOV-30-1994
<PERIOD-START> DEC-01-1993
<PERIOD-END> NOV-30-1994
<EXCHANGE-RATE> 1
<INVESTMENTS-AT-COST> 2233295
<INVESTMENTS-AT-VALUE> 2233295
<RECEIVABLES> 11784
<ASSETS-OTHER> 342
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 2245421
<PAYABLE-FOR-SECURITIES> 36288
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 12709
<TOTAL-LIABILITIES> 48997
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 2196347
<SHARES-COMMON-STOCK> 2196318
<SHARES-COMMON-PRIOR> 1906901
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 77
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 0
<NET-ASSETS> 2196424
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 83281
<OTHER-INCOME> 0
<EXPENSES-NET> 6504
<NET-INVESTMENT-INCOME> 76777
<REALIZED-GAINS-CURRENT> (55)
<APPREC-INCREASE-CURRENT> 0
<NET-CHANGE-FROM-OPS> 76722
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 76777
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 1946245
<NUMBER-OF-SHARES-REDEEMED> 1730176
<SHARES-REINVESTED> 73348
<NET-CHANGE-IN-ASSETS> 289362
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 209
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 224
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 6504
<AVERAGE-NET-ASSETS> 2030763
<PER-SHARE-NAV-BEGIN> 1.000
<PER-SHARE-NII> 0.038
<PER-SHARE-GAIN-APPREC> 0.000
<PER-SHARE-DIVIDEND> 0.038
<PER-SHARE-DISTRIBUTIONS> 0.000
<RETURNS-OF-CAPITAL> 0.000
<PER-SHARE-NAV-END> 1.000
<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> YEAR
<FISCAL-YEAR-END> NOV-30-1994
<PERIOD-START> DEC-01-1993
<PERIOD-END> NOV-30-1994
<EXCHANGE-RATE> 1
<INVESTMENTS-AT-COST> 2098327
<INVESTMENTS-AT-VALUE> 2098327
<RECEIVABLES> 17074
<ASSETS-OTHER> 770
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 2116171
<PAYABLE-FOR-SECURITIES> 49300
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 10814
<TOTAL-LIABILITIES> 60114
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 2055884
<SHARES-COMMON-STOCK> 2055866
<SHARES-COMMON-PRIOR> 1751011
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 173
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 0
<NET-ASSETS> 2056057
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 75370
<OTHER-INCOME> 0
<EXPENSES-NET> 6163
<NET-INVESTMENT-INCOME> 69207
<REALIZED-GAINS-CURRENT> (24)
<APPREC-INCREASE-CURRENT> 0
<NET-CHANGE-FROM-OPS> 69183
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 69207
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 2178457
<NUMBER-OF-SHARES-REDEEMED> 1939613
<SHARES-REINVESTED> 66010
<NET-CHANGE-IN-ASSETS> 304830
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 197
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 212
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 6163
<AVERAGE-NET-ASSETS> 1926692
<PER-SHARE-NAV-BEGIN> 1.000
<PER-SHARE-NII> 0.360
<PER-SHARE-GAIN-APPREC> 0.000
<PER-SHARE-DIVIDEND> 0.360
<PER-SHARE-DISTRIBUTIONS> 0.000
<RETURNS-OF-CAPITAL> 0.000
<PER-SHARE-NAV-END> 1.000
<EXPENSE-RATIO> 0.003
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
