Of 102 counties in the Prairie State, Cass County is 78th in terms of its size (383 square miles). Cass County is in Western Illinois. There is around 1,000 acres of recreational land for sale in Illinois's Cass County based on recent Land Network data. The combined market value of land and rural real estate for sale here is almost $500,000. Browse all recreational property for sale in Cass County to find the recreational tract that suits your lifestyle needs, from hunting and fishing properties for the outdoor enthusiast to undeveloped acreage ready for future residential-property development. The most common type of land for sale by combined acreage in Cass County is residential property.