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<ACCEPTANCE-DATETIME>20190305082741
ACCESSION NUMBER:		0001193125-19-063240
CONFORMED SUBMISSION TYPE:	497
PUBLIC DOCUMENT COUNT:		16
FILED AS OF DATE:		20190305
DATE AS OF CHANGE:		20190305
EFFECTIVENESS DATE:		20190305

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			BLACKROCK MUNICIPAL BOND FUND, INC.
		CENTRAL INDEX KEY:			0000225635
		IRS NUMBER:				132896246
		STATE OF INCORPORATION:			NJ
		FISCAL YEAR END:			0630

	FILING VALUES:
		FORM TYPE:		497
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	002-57354
		FILM NUMBER:		19656647

	BUSINESS ADDRESS:	
		STREET 1:		100 BELLEVUE PARKWAY
		CITY:			WILMINGTON
		STATE:			DE
		ZIP:			19809
		BUSINESS PHONE:		800-441-7762

	MAIL ADDRESS:	
		STREET 1:		100 BELLEVUE PARKWAY
		CITY:			WILMINGTON
		STATE:			DE
		ZIP:			19809

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MERRILL LYNCH MUNICIPAL BOND FUND INC
		DATE OF NAME CHANGE:	19920703

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ONE LIBERTY MUNICIPAL BOND FUND INC
		DATE OF NAME CHANGE:	19780622
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<SERIES-NAME>BlackRock Short-Term Municipal Fund
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<CLASS-CONTRACT-ID>C000006122
<CLASS-CONTRACT-NAME>Investor A1
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<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000006124
<CLASS-CONTRACT-NAME>Investor C
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<CLASS-CONTRACT-ID>C000006125
<CLASS-CONTRACT-NAME>Institutional
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000038034
<CLASS-CONTRACT-NAME>Investor A
</CLASS-CONTRACT>
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<CLASS-CONTRACT-ID>C000038035
<CLASS-CONTRACT-NAME>Class K Shares
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<DESCRIPTION>BLACKROCK SHORT-TERM MUNICIPAL FUND
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