Columbia, KY -- U.S. city in Kentucky Population (2000): 4014 Housing Units (2000): 1789 Land area (2000): 3.437013 sq. miles (8.901823 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 3.437013 sq. miles (8.901823 sq. km) FIPS code: 16750 Located within: Kentucky (KY), FIPS 21 Location: 37.100652 N, 85.306056 W ZIP Codes (1990): Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Columbia, KY Columbia