Mason County is in Western Illinois. Of the 102 counties in the Inland Empire, Mason County is 47th in terms of its size (563 square miles). There is around 1,000 acres of undeveloped land for sale in Mason County, Illinois, based on recent Land Network data. The combined market value of farms, hunting land and other rural land and acreage for sale here is $100,000. The average price of undeveloped land for sale in Mason County was $16,433. Some suggested uses for undeveloped land currently for sale in Mason County include for hunting/fishing, commercial, and agriculture use. Some common wildlife species to be found on undeveloped land for sale in Mason County include whitetail deer, turkey, deer, dove and ducks. Current commercial applications for commercial property for sale in Mason County include for hunting/fishing, commercial and agriculture use. Browse all Illinois undeveloped land for sale on the Land Network to find your next commercial property or land investment.