Davis -- U.S. County in Iowa Population (2000): 8541 Housing Units (2000): 3530 Land area (2000): 503.239640 sq. miles (1303.384628 sq. km) Water area (2000): 1.647534 sq. miles (4.267092 sq. km) Total area (2000): 504.887174 sq. miles (1307.651720 sq. km) Located within: Iowa (IA), FIPS 19 Location: 40.745794 N, 92.421763 W Headwords: Davis Davis, IA Davis County Davis County, IA