Mellette County is in Black Hills & Badlands South Dakota. Of the 66 counties in the Coyote State, Mellette County ranks 21st in terms of size (1,310 square miles). Recent listings of residential land for sale in Mellette County, South Dakota, totals nearly 1,000 acres and a combined market value of approximately $400,000. The most common type of land for sale by combined acreage in Mellette County is recreational property. The average price of residential land for sale in Mellette County was $180,275. The county has a rural, farm-based economy. Browse all residential land and rural property for sale in South Dakota 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.