Jefferson County is in Southern Illinois. Of the 102 counties in the Inland Empire, Jefferson County ranks 41st in terms of size (373,648 acres). Illinois's Jefferson County has approximately 1,000 acres of undeveloped land for sale based on recent Land Network data. The combined market value of farms, rural land, hunting land and other land for sale here was $1 million. The average price of undeveloped land for sale in Jefferson County was $182,786. 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, dove and ducks. 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.