VANGUARD MUNICIPAL BOND FUND INC
NSAR-A, 1998-06-26
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<PAGE>      PAGE  1
000 A000000 04/30/98
000 C000000 0000225997
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 MUNICIPAL BOND FUND, INC.
001 B000000 811-2687
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  7
007 C010100  1
007 C020100 SHORT-TERM PORTFOLIO
007 C030100 N
007 C010200  2
007 C020200 INTERMEDIATE-TERM PORTFOLIO
007 C030200 N
007 C010300  3
007 C020300 LONG-TERM PORTFOLIO
007 C030300 N
007 C010400  4
007 C020400 HIGH YIELD PORTFOLIO
007 C030400 N
007 C010500  5
007 C020500 MONEY MARKET PORTFOLIO
007 C030500 N
007 C010600  6
007 C020600 INSURED LONG-TERM PORTFOLIO
007 C030600 N
007 C010700  7
007 C020700 LIMITED-TERM PORTFOLIO
007 C030700 N
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
<PAGE>      PAGE  2
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
013 B03AA01 19103
014 A00AA01 VANGUARD MARKETING CORPORATION
014 B00AA01 8-21570
015 A00AA01 CORESTATES BANK, N.A.
015 B00AA01 C
015 C01AA01 PHILADELPHIA
015 C02AA01 PA
015 C03AA01 19101
015 E01AA01 X
018  00AA00 Y
019 A00AA00 Y
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019 C00AA00 VANGUARDGR
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021  000000        0
022 A000001 GOLDMAN SACHS & CO.
022 B000001 13-5108880
022 C000001   1439614
022 D000001    590568
022 A000002 SMITH BARNEY INC.
022 B000002 13-1912900
022 C000002   1049412
022 D000002    704032
022 A000003 MONEY MARKET PORTFOLIO/VANGUARD MUNICIPAL BD
022 B000003 23-2471394
022 C000003    472396
022 D000003    954199
022 A000004 LEHMAN BROTHERS
022 B000004 13-2518466
022 C000004   1285846
022 D000004    130594
022 A000005 BEAR STEARNS SECURITIES CORP.
022 B000005 13-3299429
022 C000005    919298
<PAGE>      PAGE  3
022 D000005    368128
022 A000006 MERRILL LYNCH PIERCE FENNER & SMITH
022 B000006 13-5674085
022 C000006    600906
022 D000006    604130
022 A000007 MORGAN STANLEY & CO.,INC.
022 B000007 13-2655998
022 C000007    618943
022 D000007    493183
022 A000008 J.P. MORGAN SECURITIES
022 B000008 13-3224016
022 C000008    580252
022 D000008    378889
022 A000009 VTF CA MONEY MARKET
022 B000009 23-2449298
022 C000009    301800
022 D000009    439130
022 A000010 INTERMEDIATE-TERM PORTFOLIO/VANGUARD MUNICIPA
022 B000010 23-2471389
022 C000010    396206
022 D000010    262174
023 C000000   11431931
023 D000000    8021342
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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
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<PAGE>      PAGE  8
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<PAGE>      PAGE  9
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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             
 


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</TABLE>

<TABLE> <S> <C>

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</TABLE>

<TABLE> <S> <C>

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</TABLE>

<TABLE> <S> <C>

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<CIK> 0000225997
<NAME> VANGUARD MUNICIPAL BOND FUND,INC.
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