X0505 N-CEN LIVE 0000225635 XXXXXXXX 811-02688 false false N-1A S000011867 C000032428 C000032427 C000199786 C000032425 BlackRock Municipal Bond Fund, Inc. 811-02688 0000225635 549300RTFZS1V1PV8C63 100 Bellevue Parkway Wilmington 19809 US-DE US 800-441-7762 BNY Mellon Investment Servicing (US) Inc. 103 Bellevue Parkway Wilmington 19809 302-791-1700 Records related to its functions as transfer agent BlackRock Advisors, LLC 100 Bellevue Parkway Wilmington 19809 302-797-2000 Records related to its functions as advisor and administrator BlackRock Investments, LLC 50 Hudson Yards New York 10001 609-282-3046 Records related to its functions as distributor State Street Bank and Trust Company One Congress Street Suite 1 Boston 02114 617-786-3000 Records related to its functions as custodian, sub-administrator and accounting agent N N N-1A 2 Y Arthur P. Steinmetz N/A N Catherine A. Lynch N/A N Cynthia L. Egan N/A N J. Phillip Holloman N/A N John M. Perlowski N/A Y Lorenzo A. Flores N/A N R. Glenn Hubbard N/A N Robert Fairbairn 004992372 Y Stayce D. Harris N/A N W. Carl Kester N/A N Aaron Wasserman N/A 50 Hudson Yards New York 10001 XXXXXX N N N N N N BlackRock Investments, LLC 8-48436 000038642 54930061FBHCKXL2G714 Y N Deloitte & Touche LLP 34 254900WYZPGQGKV3RF07 N N N N N N N