Gibson -- U.S. County in Indiana Population (2000): 32500 Housing Units (2000): 14125 Land area (2000): 488.784139 sq. miles (1265.945055 sq. km) Water area (2000): 10.267558 sq. miles (26.592852 sq. km) Total area (2000): 499.051697 sq. miles (1292.537907 sq. km) Located within: Indiana (IN), FIPS 18 Location: 38.317700 N, 87.558364 W Headwords: Gibson Gibson, IN Gibson County Gibson County, IN