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. The most common type of land for sale by combined acreage in Cook County is house. Browse all Cook County horse farms for sale on the Land Network to find the equestrian property that's right for your future needs, whether you're a horse breeder, equestrian business or simply horse lover looking for stable facilities, grooming pens or grazing pasture for your own horses.