Johnson County is in Southern Illinois. Of the 102 counties in the Prairie State, Johnson County ranks 84th in terms of size (223,272 acres). There is nearly 1,000 acres of farms for sale in Johnson County, Illinois, based on recent Land Network data. The combined market value of farms and rural land for sale here is about $6 million. The average price of farmland for sale in Johnson County was $1 million. Farms for sale in Johnson County hold 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 commercial or lifestyle needs.