A total of 1,000 acres were listed for sale in Jackson County, Illinois, recently, representing a total value of around $18 million in Jackson County farms, hunting land and other rural land and acreage for sale. Jackson County ranks 27th out of 102 counties in the state for the combined amount of land currently advertised for sale. Carbondale had the most land for sale. From an economic perspective, government and state-level services contribute most to Jackson County's overall GDP. Jackson County is Illinois's 37th biggest county (602 square miles). It's located in the Southern Illinois region of the state.