Hudson, IA -- U.S. city in Iowa Population (2000): 2117 Housing Units (2000): 815 Land area (2000): 7.700346 sq. miles (19.943805 sq. km) Water area (2000): 0.006025 sq. miles (0.015605 sq. km) Total area (2000): 7.706371 sq. miles (19.959410 sq. km) FIPS code: 37470 Located within: Iowa (IA), FIPS 19 Location: 42.408794 N, 92.452111 W ZIP Codes (1990): 50643 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Hudson, IA Hudson