A total of nearly 2,000 acres were listed for sale in Sangamon County recently, representing a total value of approximately $101 million in Sangamon County farms, rural land, hunting land and other land for sale. Sangamon County ranks 17th in the Inland Empire for the combined amount of land currently advertised for sale. Springfield featured the most land for sale. From an economic perspective, government and state-level services contribute most to Sangamon County's overall GDP. Sangamon County is one of the ten largest counties in Illinois (877 square miles). It's located in the Central Illinois region of Illinois.