Poweshiek -- U.S. County in Iowa Population (2000): 18815 Housing Units (2000): 8556 Land area (2000): 585.034711 sq. miles (1515.232882 sq. km) Water area (2000): 1.138410 sq. miles (2.948468 sq. km) Total area (2000): 586.173121 sq. miles (1518.181350 sq. km) Located within: Iowa (IA), FIPS 19 Location: 41.698037 N, 92.547030 W Headwords: Poweshiek Poweshiek, IA Poweshiek County Poweshiek County, IA