Hiawatha, IA -- U.S. city in Iowa Population (2000): 6480 Housing Units (2000): 2979 Land area (2000): 3.532733 sq. miles (9.149735 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 3.532733 sq. miles (9.149735 sq. km) FIPS code: 35940 Located within: Iowa (IA), FIPS 19 Location: 42.044409 N, 91.681025 W ZIP Codes (1990): 52233 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Hiawatha, IA Hiawatha