Keokuk -- U.S. County in Iowa Population (2000): 11400 Housing Units (2000): 5013 Land area (2000): 579.187655 sq. miles (1500.089075 sq. km) Water area (2000): 0.749731 sq. miles (1.941795 sq. km) Total area (2000): 579.937386 sq. miles (1502.030870 sq. km) Located within: Iowa (IA), FIPS 19 Location: 41.324551 N, 92.175063 W Headwords: Keokuk Keokuk, IA Keokuk County Keokuk County, IA