Palo Alto -- U.S. County in Iowa Population (2000): 10147 Housing Units (2000): 4631 Land area (2000): 563.831533 sq. miles (1460.316904 sq. km) Water area (2000): 5.569126 sq. miles (14.423970 sq. km) Total area (2000): 569.400659 sq. miles (1474.740874 sq. km) Located within: Iowa (IA), FIPS 19 Location: 43.090301 N, 94.688715 W Headwords: Palo Alto Palo Alto, IA Palo Alto County Palo Alto County, IA