Jersey County is in Southwest Illinois. Of the 102 counties in the Prairie State, Jersey County ranks 80th in terms of size (377 square miles). Recent Land Network data records 1,000 acres of residential land for sale in Illinois's Jersey County, which is valued at a combined $10 million. The average price of residential acreage for sale in Jersey County was $488,721. Browse all residential land and rural property for sale in Illinois to find residential land and properties that suit your lifestyle needs, from existing residential homes and estates to land ready for future residential-property development.