Boone County is in Northern Illinois. Of the 102 counties in the state, Boone County is 94th in terms of its size (180,518 acres). Recent listings of farms for sale in Boone County, Illinois, totals about 1,000 acres and a combined market value of about $8 million. By overall acreage, house is the most common type of land for sale in Boone County. The average price of farmland for sale in Boone County was $1 million. Farms for sale in Boone 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.