Fort Madison, IA -- U.S. city in Iowa Population (2000): 10715 Housing Units (2000): 5106 Land area (2000): 9.214015 sq. miles (23.864187 sq. km) Water area (2000): 3.737021 sq. miles (9.678840 sq. km) Total area (2000): 12.951036 sq. miles (33.543027 sq. km) FIPS code: 28605 Located within: Iowa (IA), FIPS 19 Location: 40.628588 N, 91.339005 W ZIP Codes (1990): 52627 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Fort Madison, IA Fort Madison