Adams -- U.S. County in Iowa Population (2000): 4482 Housing Units (2000): 2109 Land area (2000): 423.539674 sq. miles (1096.962674 sq. km) Water area (2000): 1.865696 sq. miles (4.832129 sq. km) Total area (2000): 425.405370 sq. miles (1101.794803 sq. km) Located within: Iowa (IA), FIPS 19 Location: 41.022252 N, 94.711809 W Headwords: Adams Adams, IA Adams County Adams County, IA