Decatur County is in Central Iowa. Of the 99 counties in the Wrestling State, Decatur County is 66th in terms of its size (533 square miles). Recent listings of residential land and property for sale in Iowa's Decatur County totals nearly 1,000 acres and a combined market value of almost $6 million. The most common type of land for sale by combined acreage in Decatur County is house. The average price of residential land for sale in Decatur County was $372,449. 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.