Clearfield, IA -- U.S. city in Iowa Population (2000): 371 Housing Units (2000): 184 Land area (2000): 0.807954 sq. miles (2.092591 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.807954 sq. miles (2.092591 sq. km) FIPS code: 13980 Located within: Iowa (IA), FIPS 19 Location: 40.800133 N, 94.476286 W ZIP Codes (1990): 50840 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Clearfield, IA Clearfield