Notice of Effectiveness

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Notice of Effectiveness
Effectiveness Date:	October 2, 2006

Accession Number:

0000891092-06-002937

Submission Type:

485APOS

CIK:

Company Name:

BLACKROCK MUNICIPAL BOND FUND, INC.

File Number:

REFERENCED SERIES/CLASSES (CONTRACTS)

Series ID
	Class/Contract	Name
S000002332		BlackRock Municipal Insured Fund
	C000006110	Investor A
	C000006111	Investor B
	C000006112	Investor C1
	C000006113	Institutional
	C000038032	Investor C

Series ID
	Class/Contract	Name
S000002334		BlackRock National Municipal Fund
	C000006118	Investor A
	C000006119	Investor B
	C000006120	Investor C1
	C000006121	Institutional
	C000038033	Investor C

Series ID
	Class/Contract	Name
S000002335		BlackRock Short-Term Municipal Fund
	C000006122	Investor A1
	C000006123	Investor B
	C000006124	Investor C
	C000006125	Institutional
	C000038034	Investor A
	C000038035	BlackRock
	C000038044	Service

Series ID
	Class/Contract	Name
S000011867		BlackRock High Yield Municipal Fund
	C000032425	Investor A
	C000032427	Investor C
	C000032428	Institutional