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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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<SEC-DOCUMENT>9999999995-06-001722.txt : 20061003
<SEC-HEADER>9999999995-06-001722.hdr.sgml : 20061003
<ACCEPTANCE-DATETIME>20061003001513
ACCESSION NUMBER:		9999999995-06-001722
CONFORMED SUBMISSION TYPE:	EFFECT
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20061002
DATE AS OF CHANGE:		20061003
EFFECTIVENESS DATE:		20061002

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:		EFFECT
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	002-57354
		FILM NUMBER:		061122299

	BUSINESS ADDRESS:	
		STREET 1:		800 SCUDDERS MILL RD
		CITY:			PLAINSBORO
		STATE:			NJ
		ZIP:			08536
		BUSINESS PHONE:		6092822026

	MAIL ADDRESS:	
		STREET 1:		P.O. BOX 9011
		CITY:			PRINCETON
		STATE:			NJ
		ZIP:			08543

	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
<SERIES-AND-CLASSES-CONTRACTS-DATA>
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<OWNER-CIK>0000225635
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<SERIES-NAME>BlackRock Municipal Insured Fund
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<CLASS-CONTRACT-NAME>INVESTOR A
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<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000006111
<CLASS-CONTRACT-NAME>INVESTOR B
</CLASS-CONTRACT>
<CLASS-CONTRACT>
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<CLASS-CONTRACT-NAME>INVESTOR C1
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<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000006113
<CLASS-CONTRACT-NAME>INSTITUTIONAL
</CLASS-CONTRACT>
<CLASS-CONTRACT>
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<SERIES>
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<CLASS-CONTRACT>
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<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000006119
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</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000006120
<CLASS-CONTRACT-NAME>INVESTOR C1
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000006121
<CLASS-CONTRACT-NAME>INSTITUTIONAL
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000038033
<CLASS-CONTRACT-NAME>INVESTOR C
</CLASS-CONTRACT>
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<SERIES>
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<CLASS-CONTRACT>
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</SERIES>
<SERIES>
<OWNER-CIK>0000225635
<SERIES-ID>S000011867
<SERIES-NAME>BlackRock High Yield Municipal Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000032425
<CLASS-CONTRACT-NAME>INVESTOR A
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<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000032427
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</CLASS-CONTRACT>
<CLASS-CONTRACT>
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<TYPE>EFFECT
<SEQUENCE>1
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