Decatur County is in South Central Indiana. Of the 92 counties in the Hoosier?State, Decatur County is 64th in terms of its size (238,926 acres). Recent listings of residential land and property for sale in Decatur County, Indiana, totals around 1,000 acres and a combined market value of about $10 million. The most common type of land for sale by combined acreage in Decatur County is house. The average price of residential acreage for sale in Decatur County was $368,266. Browse all residential land and rural property for sale in Indiana 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.