Of 102 counties in the Land of Lincoln, Cook County ranks first in terms of size (1 million acres). Cook County is in the Chicagoland Illinois region. The total value of around 1,000 acres of farms recently listed for sale in Illinois's Cook County was around $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 lifestyle needs.