Johnson County is in Southern Illinois. Of the 102 counties in the Inland Empire, Johnson County ranks 84th in terms of size (223,272 acres). Recent Land Network data totals almost 1,000 acres of undeveloped land for sale in Illinois's Johnson County, which is valued at a combined $637,302. The average price of undeveloped land for sale in Johnson County was $91,043. Some suggested uses for undeveloped land currently for sale in Johnson County include for commercial, hunting/fishing, and agriculture use. Some common wildlife species to be found on undeveloped land for sale in Johnson County include whitetail deer, turkey, deer, dove and ducks. Current commercial applications for commercial property for sale in Johnson 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.