Mellette County is in Black Hills & Badlands South Dakota. Of the 66 counties in the state, Mellette County ranks 21st in terms of size (1,310 square miles). Recent listings of farms for sale in Mellette County, South Dakota, totals nearly 3,000 acres and a combined market value of about $11 million. By overall acreage, homesite is the most common type of land for sale in Mellette County. The average price of farmland for sale in Mellette County was $3 million. The county has a rural, farm-based economy. Farms for sale in Mellette County sustain livestock including cattle, horses, goats, pig and sheep. Browse all South Dakota farms for sale on the Land Network to find the farm, cattle operation, hobby farm or other farm property that's right for your future commercial or individual needs.