Johnson County is in Southern Illinois. Of the 102 counties in the Prairie State, Johnson County is 84th in terms of its size (223,272 acres). Johnson County, Illinois, includes 2,000 acres of farms for sale based on recent Land Network data. The combined market value of farms, hunting land and other rural land and acreage for sale here was around $8 million. The average price of farmland for sale in Johnson County was $2 million. Farms for sale in Johnson County feature livestock including horses, cattle, goats, sheep and pig. Browse all Illinois farms for sale on the Land Network to find the farm, cattle operation, hobby farm or other farm property that's right for your future business or lifestyle needs.