Charles Mix County is in Great Lakes South Dakota. Of the 66 counties in the Mount Rushmore State, Charles Mix County ranks 26th in terms of size (1,150 square miles). Recent listings of residential land and property for sale in Charles Mix County, South Dakota, totals 1,000 acres and a combined market value of $7 million. The most common type of land for sale by combined acreage in Charles Mix County is residential property. The average price of residential land for sale in Charles Mix County was $546,900. The economy here is principally agricultural. 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.