McCook County is in Southeast South Dakota. Of the 66 counties in the Coyote State, 576-square-mile McCook County ranks 53rd by size. There is almost 1,000 acres of residential land and property for sale in South Dakota's McCook County based on recent Land Network data. The combined market value of ranches, farms, hunting land and other rural land and acreage for sale here is nearly $7 million. The average price of residential land for sale in McCook County was $470,356. The economy here is largely 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.