The overall value of farms, ranches, hunting land and other land for sale in Grant County recently on Land.com was approximately $2 million. This represents 1,000 acres of land and rural real estate for sale in Grant County. Grant County ranks 43rd out of 66 counties in the state for the total acreage of land currently advertised for sale. Of all farms, ranches, and rural real estate for sale in Grant County, Milbank featured the most land for sale. Grant County is the 48th largest county (687 square miles) in South Dakota. It's located in the Glacial Lakes & Prairies South Dakota region of the state.