Columbia, TN -- U.S. city in Tennessee Population (2000): 33055 Housing Units (2000): 14322 Land area (2000): 29.599278 sq. miles (76.661776 sq. km) Water area (2000): 0.010709 sq. miles (0.027737 sq. km) Total area (2000): 29.609987 sq. miles (76.689513 sq. km) FIPS code: 16540 Located within: Tennessee (TN), FIPS 47 Location: 35.615022 N, 87.044464 W ZIP Codes (1990): 38401 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Columbia, TN Columbia