Colfax, WA -- U.S. city in Washington Population (2000): 2844 Housing Units (2000): 1357 Land area (2000): 1.667438 sq. miles (4.318645 sq. km) Water area (2000): 0.002829 sq. miles (0.007326 sq. km) Total area (2000): 1.670267 sq. miles (4.325971 sq. km) FIPS code: 13785 Located within: Washington (WA), FIPS 53 Location: 46.884033 N, 117.363668 W ZIP Codes (1990): 99111 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Colfax, WA Colfax