Jefferson County is in Southern Illinois. Of the 102 counties in the Land of Lincoln, 373,648-acre Jefferson County ranks 41st by size. The total value of roughly 1,000 acres of undeveloped land recently listed for sale in Jefferson County, Illinois, was nearly $1 million. The average price of undeveloped acreage for sale in Jefferson County was $223,900. Some suggested uses for undeveloped land currently for sale in Jefferson County include for commercial, hunting/fishing, and agriculture use. Some common wildlife species to be found on undeveloped land for sale in Jefferson County include whitetail deer, turkey, deer, ducks, dove, quail and waterfowl. Current commercial applications for commercial property for sale in Jefferson County include for commercial, hunting/fishing and agriculture use. Browse all Illinois undeveloped land for sale on the Land Network to find your next commercial property or land investment.