Grayson -- U.S. County in Kentucky Population (2000): 24053 Housing Units (2000): 12802 Land area (2000): 503.675510 sq. miles (1304.513526 sq. km) Water area (2000): 7.173969 sq. miles (18.580493 sq. km) Total area (2000): 510.849479 sq. miles (1323.094019 sq. km) Located within: Kentucky (KY), FIPS 21 Location: 37.467837 N, 86.339099 W Headwords: Grayson Grayson, KY Grayson County Grayson County, KY