Benton -- U.S. County in Iowa Population (2000): 25308 Housing Units (2000): 10377 Land area (2000): 716.388940 sq. miles (1855.438759 sq. km) Water area (2000): 2.061554 sq. miles (5.339401 sq. km) Total area (2000): 718.450494 sq. miles (1860.778160 sq. km) Located within: Iowa (IA), FIPS 19 Location: 42.072383 N, 92.057568 W Headwords: Benton Benton, IA Benton County Benton County, IA