Of 102 counties in the Inland Empire, Cook County is first in terms of its size (1,634 square miles). Cook County is in the Chicagoland Illinois region. A recent survey of Land Network data totals around 1,000 acres of farms for sale in Illinois's Cook County, which is valued at a combined $5 million. The average price of farmland for sale in Cook County was $2 million. 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 individual needs.