Land for sale in Sangamon County recently totaled almost $82 million and around 2,000 acres. Sangamon County ranks 14th out of 102 counties in the state for the total number of acres of land currently advertised for sale. Among cities in Sangamon County with farms, hunting land and other rural land and acreage 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 the state.