Lyman County is in Great Lakes South Dakota. Of the 66 counties in the Mount Rushmore State, Lyman County is 14th in terms of its size (1,706 square miles). South Dakota's Lyman County includes nearly 1,000 acres of residential land for sale based on recent Land Network data. The combined market value of farms and ranches for sale here was approximately $1 million. The average price of residential acreage for sale in Lyman County was $210,979. 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.