Columbia -- U.S. County in Georgia Population (2000): 89288 Housing Units (2000): 33321 Land area (2000): 290.014532 sq. miles (751.134157 sq. km) Water area (2000): 17.762829 sq. miles (46.005514 sq. km) Total area (2000): 307.777361 sq. miles (797.139671 sq. km) Located within: Georgia (GA), FIPS 13 Location: 33.512018 N, 82.174583 W Headwords: Columbia Columbia, GA Columbia County Columbia County, GA