The overall value of ranches, farms, hunting land and other rural land and acreage for sale in Roberts County, South Dakota, recently on Land.com was almost $10 million. This represents 1,000 acres of land for sale in Roberts County. Roberts County ranks 15th out of 66 counties in the Mount Rushmore State for the total acreage of land currently advertised for sale. Of all farms, ranches, hunting land and other land for sale in Roberts County, Big Stone City featured the most land for sale. Its economy is defined as agricultural, with 876 farms recorded in the county during the most recent U.S. Census. Farming activities in Roberts County generate annual revenues of $16 million, most of which is from crops. Roberts County is South Dakota's 27th biggest county (1,135 square miles). It's located in the Glacial Lakes & Prairies South Dakota region of South Dakota.