Swett is an unincorporated former town of Bennett County, South Dakota, United States. It was put up for sale as a ghost town in June 2014 and as of November 2016 had not found a buyer. The town, on U.S. Highway 18 approximately two hours southeast of Rapid City, covers 6.16 acres of land. Its buildings include a gas station, museum, a bar and a store. …Swett is an unincorporated former town of Bennett County, South Dakota, United States. It was put up for sale as a ghost town in June 2014 and as of November 2016 had not found a buyer. The town, on U.S. Highway 18 approximately two hours southeast of Rapid City, covers 6.16 acres of land. Its buildings include a gas station, museum, a bar and a store. Daniel Simmons-Ritchie of the Rapid City Journal describes the buildings as "a few ramshackle buildings". The residence is said to be haunted.