Land for sale in Lassen County recently totaled approximately $119 million and nearly 100,000 acres. Lassen County ranks 37th out of 58 counties in the El Dorado State for the total acreage of land currently advertised for sale. Among cities in Lassen County with farms and ranches for sale, Susanville had the most land for sale. Government and state-level services are the main economic drivers in Lassen County. Lassen County is one of the ten largest counties in California (4,720 square miles). It's located in the Shasta Cascade California region of California.