The value of all farms, ranches, and rural real estate for sale in South Dakota's McCook County recently was approximately $10 million, representing a total of 767 acres of land for sale in McCook County. McCook County ranks 21st out of 66 counties in the Mount Rushmore State for the total acreage of land currently advertised for sale. Of all locations in McCook County with farms, ranches, and rural real estate for sale, Canistota featured the most land for sale. McCook County has a large agricultural economy, with 568 farms recorded in the county during the latest U.S. Census. Farming activities in McCook County generate annual revenues of $39 million, most of which is from crops. McCook County is the 53rd largest county (576 square miles) in South Dakota. It's located in the Southeast South Dakota region of the state.