Decatur County is in High Plains Kansas. Of the 105 counties in the Jayhawk State, 894-square-mile Decatur County ranks 36th by size. Recent listings of residential land for sale in Decatur County, Kansas, totals nearly 1,000 acres and a combined market value of approximately $2 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 $290,600. The county has a rural, farm-based economy. Browse all residential land and rural property for sale in Kansas 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.