Gregory County is in Great Lakes South Dakota. Of the 66 counties in the Mount Rushmore State, Gregory County is 30th in terms of its size (674,254 acres). Gregory County, South Dakota, includes approximately 1,000 acres of undeveloped land for sale based on recent Land Network data. The combined market value of farms, ranches, hunting land and other land for sale here was $800,000. The average price of undeveloped land for sale in Gregory County was $396,000. The economy here is mainly agricultural. Some suggested uses for undeveloped land currently for sale in Gregory County include for hunting/fishing, commercial, and agriculture use. Some common wildlife species to be found on undeveloped land for sale in Gregory County include whitetail deer, mule deer, turkey, pheasant and deer. Current commercial applications for commercial property for sale in Gregory County include for hunting/fishing, commercial and agriculture use. Browse all South Dakota undeveloped acreage for sale on the Land Network to find your next commercial property or land investment.