Henderson, MD -- U.S. town in Maryland Population (2000): 118 Housing Units (2000): 46 Land area (2000): 0.124169 sq. miles (0.321595 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.124169 sq. miles (0.321595 sq. km) FIPS code: 37925 Located within: Maryland (MD), FIPS 24 Location: 39.073796 N, 75.766431 W ZIP Codes (1990): 21640 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Henderson, MD Henderson