Colfax, IA -- U.S. city in Iowa Population (2000): 2223 Housing Units (2000): 908 Land area (2000): 1.361784 sq. miles (3.527004 sq. km) Water area (2000): 0.017885 sq. miles (0.046322 sq. km) Total area (2000): 1.379669 sq. miles (3.573326 sq. km) FIPS code: 15060 Located within: Iowa (IA), FIPS 19 Location: 41.675731 N, 93.244384 W ZIP Codes (1990): 50054 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Colfax, IA Colfax