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ONAWA, IA 51040

Monday - Friday
8:00 AM - 4:30 PM

The Courthouse will be closed on the following Holidays:
New Year's Day, President's Day, Memorial Day, Independence Day, Labor Day, Veteran's Day, Thanksgiving Day, Day After Thanksgiving & Christmas Day

Notice of Public Hearing

The Monona County Board of Supervisors will hold a public hearing on Thursday, November 8, 2018, at 9:30 AM in the Board of Supervisors boardroom regarding proposed changes/updates to draft Ordinance #58. Please see attached documents for additional information.

  • Loess Hills Overlay
  • Wind Energy Table
  • Principal Use Table

  • About Monona County

    According to the US Census Bureau, Monona County has a total area of 699 square miles, of which 694 is land and 4.9 is water. We lie on the western border of Iowa along the mighty Missouri River. Monona County is home to the beautiful Loess Hills which add year-round beauty to our area and provide ample area for hunting, hiking and exploring. We also boast rich, fertile soil and incredible flatlands in the area which lends itself to farming, new trends in agri-business, tourism, hunting and fishing.

    Communities & Schools

    Monona County consists of 10 communities: Blencoe, Castana, Mapleton, Moorhead, Onawa, Rodney, Soldier, Turin, Ute and Whiting with a combined population estimated at 8,979. It is home to 4 elementary schools and 3 middle school/high schools. Please click on the links provided to learn more about our towns/schools and to explore the opportunities awaiting you.



    Lewis & Clark

    Our county seat of Onawa was one of the many stops in 1804 for Meriwether Lewis and William Clark on their expedition across the US to find a water route to the Pacific Ocean. The spot that they stayed is now home to the beautiful Lewis & Clark State Park which is located on Blue Lake, a 250 acre ox-bow created by the meanderings of the Missouri River many years ago. The park offers camping, boating, swimming, hiking, picnic/shelter areas, as well as a new Visitor's Center which houses a museum and a full-sized reproduction of the Lewis & Clark keelboat.

    A Look Around Monona County

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