McCook County is in Southeast South Dakota. Of the 66 counties in the Mount Rushmore State, McCook County is 53rd in terms of its size (369,194 acres). South Dakota's McCook County includes almost 1,000 acres of residential land and property for sale based on recent Land Network data. The combined market value of land and rural real estate for sale here was almost $4 million. The average price of residential land for sale in McCook County was $485,998. 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.