Jefferson County is in Southern Illinois. Of the 102 counties in the Inland Empire, Jefferson County is 41st in terms of its size (373,648 acres). The total value of 1,000 acres of undeveloped land recently listed for sale in Illinois's Jefferson County was about $1 million. The average price of undeveloped land for sale in Jefferson County was $194,583. 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, waterfowl and dove. 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.