Decatur County is in Central Iowa. Of the 99 counties in the state, Decatur County is 66th in terms of its size (341,427 acres). Recent listings of residential land for sale in Decatur County, Iowa, totals approximately 1,000 acres and a combined market value of about $8 million. The most common type of land for sale by combined acreage in Decatur County is farms. The average price of residential land for sale in Decatur County was $387,685. 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.