Decatur County is in Central Iowa. Of the 99 counties in the Hawkeye State, 341,427-acre Decatur County ranks 66th by size. There is about 1,000 acres of residential land for sale in Iowa's Decatur County based on recent Land Network data. The combined market value of farms, ranches, hunting land and other land for sale here is about $7 million. The average price of residential acreage for sale in Decatur County was $271,580. 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.