Saint Clair County is in Southwest Illinois. Of the 102 counties in the Inland Empire, 431,325-acre Saint Clair County ranks 29th by size. Recent listings of commercial land and property for sale in Saint Clair County, Illinois, totals approximately 1,000 acres and a combined market value of about $9 million. The most common type of land for sale by combined acreage in Saint Clair County is house. The average price of commercial land and property for sale in Saint Clair County was $486,950. Some suggested uses for commercial property currently for sale in Saint Clair County include for commercial, hunting/fishing, and agriculture use. Some common wildlife species to be found on undeveloped land for sale in Saint Clair County include whitetail deer, turkey, deer, dove and ducks. Current commercial applications for commercial property for sale in Saint Clair County include for commercial, hunting/fishing and agriculture use. Browse all Illinois commercial acreage for sale on the Land Network to find your next commercial property or land investment.