VANGUARD ADMIRAL FUNDS INC
NSAR-B, 1999-03-18
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<PAGE>      PAGE  1
000 B000000 01/31/99
000 C000000 0000891190
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 ADMIRAL FUNDS
001 B000000 811-7043
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  4
007 C010100  1
007 C020100 VANGURD ADMIRAL TREASURY MONEY MARKET FUND
007 C030100 N
007 C010200  2
007 C020200 VANGUARD ADMIRAL SHORT-TERM TREASURY FUND
007 C030200 N
007 C010300  3
007 C020300 VANGUARD ADMIRAL INTER.-TERM TREASURY FUND
007 C030300 N
007 C010400  4
007 C020400 VANGUARD ADMIRAL LONG-TERM TREASURY FUND
007 C030400 N
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 PRICEWATERHOUSECOOPERS LLP
<PAGE>      PAGE  2
013 B01AA01 PHILADELPHIA
013 B02AA01 PA
013 B03AA01 19103
014 A00AA01 VANGUARD MARKETING CORP.
014 B00AA01 8-21570
018  00AA00 Y
019 A00AA00 Y
019 B00AA00   97
019 C00AA00 VANGUARDGR
020 A000001 AUBREY G. LANSTON & CO., INC.
020 B000001 13-5552129
020 C000001     28
020 A000002 J.P. MORGAN SECURITIES INC.
020 B000002 13-3224016
020 C000002      3
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022 A000001 J.P. MORGAN SECURITIES INC.
022 B000001 13-3224016
022 C000001   5950827
022 D000001   1802701
022 A000002 MORGAN STANLEY & CO. INC.
022 B000002 13-2655998
022 C000002   4917850
022 D000002   2016118
022 A000003 BARCLAY DE ZOETE WEDD
022 B000003 13-3410233
022 C000003   4555508
022 D000003   1350584
022 A000004 DONALDSON LUFKIN & JENRETTE SECURITIES CORP.
022 B000004 13-2741729
022 C000004   2531605
022 D000004   1051344
022 A000005 VGI POOLED CASH ACCOUNT
022 B000005 23-1945930
022 C000005   1333603
022 D000005   1290994
022 A000006 MERRILL LYNCH PIERCE FENNER & SMITH INC.
022 B000006 13-5674085
022 C000006   1452539
022 D000006    637977
022 A000007 HSBC SECURITIES INC.
022 B000007 13-2650272
022 C000007   1130342
<PAGE>      PAGE  3
022 D000007    346259
022 A000008 PAINEWEBBER INC.
022 B000008 13-2638166
022 C000008    638950
022 D000008    565138
022 A000009 CHASE SECURITIES INC.
022 B000009 13-3112953
022 C000009    799381
022 D000009    382382
022 A000010 PRUDENTIAL SECURITIES INC.
022 B000010 22-2347336
022 C000010    691204
022 D000010    288864
023 C000000   28958379
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<PAGE>      PAGE  4
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<PAGE>      PAGE  5
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<PAGE>      PAGE  6
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<PAGE>      PAGE  7
070 D020100 N
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<PAGE>      PAGE  8
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<PAGE>      PAGE  9
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015 A000201 STATE STREET BANK AND TRUST COMPANY
015 B000201 C
015 C010201 BOSTON
015 C020201 MA
015 C030201 02110
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<PAGE>      PAGE  10
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<PAGE>      PAGE  11
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<PAGE>      PAGE  12
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<PAGE>      PAGE  13
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<PAGE>      PAGE  14
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<PAGE>      PAGE  15
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<PAGE>      PAGE  16
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<PAGE>      PAGE  17
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<PAGE>      PAGE  18
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SIGNATURE   GARY P. SOURA                                
TITLE       MANAGER             
 


<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000891190
<NAME> VANGUARD ADMIRAL FUNDS
<SERIES>
   <NUMBER> 01
   <NAME> VANGUARD ADMIRAL TREASURY MONEY MARKET FUND
<MULTIPLIER> 1000
<CURRENCY> US
       
<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          JAN-31-1999
<PERIOD-START>                             FEB-01-1998
<PERIOD-END>                               JAN-31-1999
<EXCHANGE-RATE>                                      1
<INVESTMENTS-AT-COST>                          4976775
<INVESTMENTS-AT-VALUE>                         4976775
<RECEIVABLES>                                   565300
<ASSETS-OTHER>                                     903
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                                 5542978
<PAYABLE-FOR-SECURITIES>                        461518
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                        24504
<TOTAL-LIABILITIES>                             486022
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                       5056966
<SHARES-COMMON-STOCK>                          5056966
<SHARES-COMMON-PRIOR>                          3880128
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                           (10)
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                             0
<NET-ASSETS>                                   5056956
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                               228348
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                    6683
<NET-INVESTMENT-INCOME>                         221665
<REALIZED-GAINS-CURRENT>                         (284)
<APPREC-INCREASE-CURRENT>                            0
<NET-CHANGE-FROM-OPS>                           221381
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                       221665
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                        5189503
<NUMBER-OF-SHARES-REDEEMED>                    4219201
<SHARES-REINVESTED>                             206536
<NET-CHANGE-IN-ASSETS>                         1176554
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                          274
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                              536
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                   6732
<AVERAGE-NET-ASSETS>                           4458279
<PER-SHARE-NAV-BEGIN>                             1.00
<PER-SHARE-NII>                                  0.050
<PER-SHARE-GAIN-APPREC>                              0
<PER-SHARE-DIVIDEND>                             0.050
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                               1.00
<EXPENSE-RATIO>                                   0.15
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000891190
<NAME> VANGUARD ADMIRAL FUNDS
<SERIES>
   <NUMBER> 02
   <NAME> VANGUARD ADMIRAL SHORT-TERM TREASURY FUND
<MULTIPLIER> 1000
<CURRENCY> US
       
<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          JAN-31-1999
<PERIOD-START>                             FEB-01-1998
<PERIOD-END>                               JAN-31-1999
<EXCHANGE-RATE>                                      1
<INVESTMENTS-AT-COST>                          1248339
<INVESTMENTS-AT-VALUE>                         1258506
<RECEIVABLES>                                    40502
<ASSETS-OTHER>                                     203
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                                 1299211
<PAYABLE-FOR-SECURITIES>                         17208
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                        24673
<TOTAL-LIABILITIES>                              41881
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                       1245188
<SHARES-COMMON-STOCK>                           122977
<SHARES-COMMON-PRIOR>                            76932
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                           1975
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                         10167
<NET-ASSETS>                                   1257330
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                                52622
<OTHER-INCOME>                                     122
<EXPENSES-NET>                                    1436
<NET-INVESTMENT-INCOME>                          51308
<REALIZED-GAINS-CURRENT>                          6290
<APPREC-INCREASE-CURRENT>                         4134
<NET-CHANGE-FROM-OPS>                            61732
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                        51308
<DISTRIBUTIONS-OF-GAINS>                          4773
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                          87237
<NUMBER-OF-SHARES-REDEEMED>                      45568
<SHARES-REINVESTED>                               4376
<NET-CHANGE-IN-ASSETS>                          476370
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                          458
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                              113
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                   1436
<AVERAGE-NET-ASSETS>                            962209
<PER-SHARE-NAV-BEGIN>                            10.15
<PER-SHARE-NII>                                  0.548
<PER-SHARE-GAIN-APPREC>                          0.114
<PER-SHARE-DIVIDEND>                             0.548
<PER-SHARE-DISTRIBUTIONS>                        0.044
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              10.22
<EXPENSE-RATIO>                                   0.15
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000891190
<NAME> VANGUARD ADMIRAL FUNDS
<SERIES>
   <NUMBER> 03
   <NAME> VANGUARD ADMIRAL INTERMEDIATE-TERM TREASURY FUND
<MULTIPLIER> 1000
<CURRENCY> US
       
<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          JAN-31-1999
<PERIOD-START>                             FEB-01-1998
<PERIOD-END>                               JAN-31-1999
<EXCHANGE-RATE>                                      1
<INVESTMENTS-AT-COST>                          1296464
<INVESTMENTS-AT-VALUE>                         1351803
<RECEIVABLES>                                    30616
<ASSETS-OTHER>                                     231
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                                 1382650
<PAYABLE-FOR-SECURITIES>                         14432
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                         8286
<TOTAL-LIABILITIES>                              22718
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                       1299235
<SHARES-COMMON-STOCK>                           124283
<SHARES-COMMON-PRIOR>                            85449
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                           5343
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                         55354
<NET-ASSETS>                                   1359932
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                                66393
<OTHER-INCOME>                                     177
<EXPENSES-NET>                                    1677
<NET-INVESTMENT-INCOME>                          64893
<REALIZED-GAINS-CURRENT>                         20371
<APPREC-INCREASE-CURRENT>                        17871
<NET-CHANGE-FROM-OPS>                           103135
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                        64893
<DISTRIBUTIONS-OF-GAINS>                           969
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                          69909
<NUMBER-OF-SHARES-REDEEMED>                      35851
<SHARES-REINVESTED>                               4776
<NET-CHANGE-IN-ASSETS>                          454523
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                      (11780)
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                              133
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                   1678
<AVERAGE-NET-ASSETS>                           1122563
<PER-SHARE-NAV-BEGIN>                            10.60
<PER-SHARE-NII>                                  0.624
<PER-SHARE-GAIN-APPREC>                          0.348
<PER-SHARE-DIVIDEND>                             0.624
<PER-SHARE-DISTRIBUTIONS>                        0.008
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              10.94
<EXPENSE-RATIO>                                   0.15
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000891109
<NAME> VANGUARD ADMIRAL FUNDS
<SERIES>
   <NUMBER> 04
   <NAME> VANGUARD ADMIRAL LONG-TERM TREASURY FUND
<MULTIPLIER> 1000
<CURRENCY> US
       
<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          JAN-31-1999
<PERIOD-START>                             FEB-01-1998
<PERIOD-END>                               JAN-31-1999
<EXCHANGE-RATE>                                      1
<INVESTMENTS-AT-COST>                           443493
<INVESTMENTS-AT-VALUE>                          489743
<RECEIVABLES>                                    14424
<ASSETS-OTHER>                                      84
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                                  504251
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                         5520
<TOTAL-LIABILITIES>                               5520
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                        449048
<SHARES-COMMON-STOCK>                            42542
<SHARES-COMMON-PRIOR>                            29416
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                           3433
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                         46250
<NET-ASSETS>                                    498731
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                                24200
<OTHER-INCOME>                                      61
<EXPENSES-NET>                                     619
<NET-INVESTMENT-INCOME>                          23642
<REALIZED-GAINS-CURRENT>                          6371
<APPREC-INCREASE-CURRENT>                        17628
<NET-CHANGE-FROM-OPS>                            47641
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                        23642
<DISTRIBUTIONS-OF-GAINS>                          2175
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                          33961
<NUMBER-OF-SHARES-REDEEMED>                      22520
<SHARES-REINVESTED>                               1685
<NET-CHANGE-IN-ASSETS>                          171637
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                        (763)
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                               49
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                    619
<AVERAGE-NET-ASSETS>                            414797
<PER-SHARE-NAV-BEGIN>                            11.12
<PER-SHARE-NII>                                  0.654
<PER-SHARE-GAIN-APPREC>                          0.653
<PER-SHARE-DIVIDEND>                             0.654
<PER-SHARE-DISTRIBUTIONS>                        0.053
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              11.72
<EXPENSE-RATIO>                                   0.15
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>


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