Custer County is in Black Hills & Badlands South Dakota. Of the 66 counties in the Mount Rushmore State, 997,800-acre Custer County ranks 16th by size. There is approximately 2,000 acres of undeveloped land for sale in Custer County, South Dakota, based on recent Land Network data. The combined market value of ranches, farms, hunting land and other rural land and acreage for sale here is about $17 million. The average price of undeveloped land for sale in Custer County was $582,631. Some suggested uses for undeveloped land currently for sale in Custer County include for hunting/fishing, commercial, and residential single use. Some common wildlife species to be found on undeveloped land for sale in Custer County include whitetail deer, mule deer, turkey, deer and pheasant. Current commercial applications for commercial property for sale in Custer County include for hunting/fishing, commercial and residential single use. Browse all South Dakota undeveloped acreage for sale on the Land Network to find your next commercial property or land investment.