Lucas -- U.S. County in Iowa Population (2000): 9422 Housing Units (2000): 4239 Land area (2000): 430.548458 sq. miles (1115.115339 sq. km) Water area (2000): 3.626469 sq. miles (9.392512 sq. km) Total area (2000): 434.174927 sq. miles (1124.507851 sq. km) Located within: Iowa (IA), FIPS 19 Location: 41.020540 N, 93.326534 W Headwords: Lucas Lucas, IA Lucas County Lucas County, IA