<SEC-DOCUMENT>0001752724-19-047563-index.html : 20190529
<SEC-HEADER>0001752724-19-047563.hdr.sgml : 20190529
<ACCEPTANCE-DATETIME>20190529071113
ACCESSION NUMBER:		0001752724-19-047563
CONFORMED SUBMISSION TYPE:	NPORT-EX
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20190331
FILED AS OF DATE:		20190529

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:		NPORT-EX
		SEC ACT:		1940 Act
		SEC FILE NUMBER:	811-02688
		FILM NUMBER:		19859746

	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
<SERIES-AND-CLASSES-CONTRACTS-DATA>
<EXISTING-SERIES-AND-CLASSES-CONTRACTS>
<SERIES>
<OWNER-CIK>0000225635
<SERIES-ID>S000002335
<SERIES-NAME>BlackRock Short-Term Municipal Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000006122
<CLASS-CONTRACT-NAME>Investor A1
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000006124
<CLASS-CONTRACT-NAME>Investor C
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000006125
<CLASS-CONTRACT-NAME>Institutional
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000038034
<CLASS-CONTRACT-NAME>Investor A
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000038035
<CLASS-CONTRACT-NAME>Class K Shares
</CLASS-CONTRACT>
</SERIES>
</EXISTING-SERIES-AND-CLASSES-CONTRACTS>
</SERIES-AND-CLASSES-CONTRACTS-DATA>
<MULTI-ACCESSION-NUMBERS>
ACCESSION NUMBER:		0001752724-19-040638
</MULTI-ACCESSION-NUMBERS>
</SEC-HEADER>
<DOCUMENT>
<TYPE>NPORT-EX
<SEQUENCE>1
<FILENAME>NPORT_223679618348705.htm
<TEXT>
Document 1 - file: NPORT_223679618348705.htm

</DOCUMENT>
</SEC-DOCUMENT>