A combined nearly 1,000 acres were listed for sale in Roberts County recently; the value of all Roberts County land for sale was nearly $10 million. Roberts County ranks 17th in the state for the combined amount of land currently advertised for sale. Of all locations in Roberts County with land for sale, 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 largest county (1,135 square miles). It's located in the Glacial Lakes & Prairies South Dakota region of South Dakota.