Cumberland, MD -- U.S. city in Maryland Population (2000): 21518 Housing Units (2000): 11143 Land area (2000): 9.069012 sq. miles (23.488632 sq. km) Water area (2000): 0.012485 sq. miles (0.032336 sq. km) Total area (2000): 9.081497 sq. miles (23.520968 sq. km) FIPS code: 21325 Located within: Maryland (MD), FIPS 24 Location: 39.647687 N, 78.762869 W ZIP Codes (1990): Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Cumberland, MD Cumberland