Decatur County is in Central Iowa. Of the 99 counties in the Wrestling State, Decatur County ranks 66th in terms of size (533 square miles). There is roughly 1,000 acres of residential land and property for sale in Decatur County, Iowa, based on recent Land Network data. The combined market value of land for sale here is roughly $5 million. The average price of residential acreage for sale in Decatur County was $382,215. Browse all residential land and rural property for sale in Iowa to find residential land and properties that suit your lifestyle needs, from existing residential homes and estates to land ready for future residential-property development.