Boone County is in Northern Illinois. Of the 102 counties in the Prairie State, Boone County is 94th in terms of its size (282 square miles). A recent survey of Land Network data includes nearly 1,000 acres of farms for sale in Illinois's Boone County, which is valued at a combined $12 million. The average price of farms for sale in Boone County was $1 million. Farms for sale in Boone County sustain 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 individual needs.