The combined value of land and rural real estate for sale in Imperial County recently on Land.com was around $204 million. This represents 100,000 acres of land for sale in Imperial County. Imperial County ranks 17th in California for the total acreage of land currently advertised for sale. Of all ranches, farms, hunting land and other rural land and acreage for sale in Imperial County, Thermal had the most land for sale. From an economic perspective, government and state-level services contribute most to Imperial County's overall GDP. Imperial County is one of the ten largest counties in California (4,481 square miles). It's located in the Deserts California region of California.