Monona -- U.S. County in Iowa Population (2000): 10020 Housing Units (2000): 4660 Land area (2000): 693.115562 sq. miles (1795.160988 sq. km) Water area (2000): 5.730732 sq. miles (14.842528 sq. km) Total area (2000): 698.846294 sq. miles (1810.003516 sq. km) Located within: Iowa (IA), FIPS 19 Location: 42.050426 N, 95.953652 W Headwords: Monona Monona, IA Monona County Monona County, IA