Roberts County is in Glacial Lakes & Prairies South Dakota. Of the 66 counties in the state, Roberts County ranks 27th in terms of size (726,897 acres). The total value of approximately 1,000 acres of residential land and property recently listed for sale in Roberts County, South Dakota, was $5 million. The average price of residential acreage for sale in Roberts County was $495,240. The county has a rural, farm-based economy. 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.