The value of all land for sale in Iowa's Monona County recently was approximately $800,000, representing a total of three acres of land for sale in Monona County. Monona County ranks 99th in the Cyclone State for the total acreage of land currently advertised for sale. Among cities in Monona County with farms, ranches, hunting land and other land for sale, Onawa featured the most land for sale. Its economy is defined as agricultural, with 538 farms recorded in the county during the most recent U.S. Census. Farming activities in Monona County generate annual revenues of $23 million, most of which is from crops. Monona County is the 16th biggest county (698 square miles) in Iowa. It's located in the Western Iowa region of the state.