Worthington, IA -- U.S. city in Iowa Population (2000): 381 Housing Units (2000): 147 Land area (2000): 0.310045 sq. miles (0.803013 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.310045 sq. miles (0.803013 sq. km) FIPS code: 87060 Located within: Iowa (IA), FIPS 19 Location: 42.396745 N, 91.119529 W ZIP Codes (1990): 52078 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Worthington, IA Worthington