Jones -- U.S. County in Iowa Population (2000): 20221 Housing Units (2000): 8126 Land area (2000): 575.308479 sq. miles (1490.042057 sq. km) Water area (2000): 1.391636 sq. miles (3.604321 sq. km) Total area (2000): 576.700115 sq. miles (1493.646378 sq. km) Located within: Iowa (IA), FIPS 19 Location: 42.119996 N, 91.162116 W Headwords: Jones Jones, IA Jones County Jones County, IA