Sac -- U.S. County in Iowa Population (2000): 11529 Housing Units (2000): 5460 Land area (2000): 575.822650 sq. miles (1491.373754 sq. km) Water area (2000): 2.561683 sq. miles (6.634728 sq. km) Total area (2000): 578.384333 sq. miles (1498.008482 sq. km) Located within: Iowa (IA), FIPS 19 Location: 42.381921 N, 95.093223 W Headwords: Sac Sac, IA Sac County Sac County, IA