There was a total of nearly $4 million of farms, ranches, and rural real estate for sale in Monona County, Iowa, recently on Land.com. The total acreage of all Monona County farms and ranches for sale was nearly 1,000 acres. Monona County ranks 92nd in the Cyclone State for the combined amount of land currently advertised for sale. Of all ranches, farms, hunting land and other rural land and acreage for sale in Monona County, Onawa had the most land for sale. Monona County has a large agricultural economy, with 538 farms recorded in the county during the latest 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.