Boone County is in Northern Illinois. Of the 102 counties in the state, 282-square-mile Boone County ranks 94th by size. The total value of around 1,000 acres of farms recently listed for sale in Illinois's Boone County was approximately $15 million. The average price of farms for sale in Boone County was $1 million. Farms for sale in Boone 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 business or lifestyle needs.