Knox -- U.S. County in Kentucky Population (2000): 31795 Housing Units (2000): 13999 Land area (2000): 387.664514 sq. miles (1004.046439 sq. km) Water area (2000): 0.041713 sq. miles (0.108036 sq. km) Total area (2000): 387.706227 sq. miles (1004.154475 sq. km) Located within: Kentucky (KY), FIPS 21 Location: 36.894622 N, 83.906488 W Headwords: Knox Knox, KY Knox County Knox County, KY