Warren County is in Western Illinois. Of the 102 counties in the state, 543-square-mile Warren County ranks 49th by size. There is approximately 1,000 acres of undeveloped land for sale in Illinois's Warren County based on recent Land Network data. The combined market value of land for sale here is nearly $8 million. The average price of undeveloped acreage for sale in Warren County was $1 million. Some suggested uses for undeveloped land currently for sale in Warren County include for commercial, hunting/fishing, and agriculture use. Some common wildlife species to be found on undeveloped land for sale in Warren County include whitetail deer, turkey, deer, dove and ducks. Current commercial applications for commercial property for sale in Warren County include for commercial, hunting/fishing and agriculture use. Browse all Illinois undeveloped acreage for sale on the Land Network to find your next commercial property or land investment.