A total of nearly 5,000 acres were listed for sale in San Juan County, Utah, recently, representing a combined almost $51 million in San Juan County land for sale. San Juan County ranks 20th out of 29 counties in the state for the combined amount of land currently advertised for sale. Of all locations in San Juan County with ranches, farms, hunting land and other rural land and acreage for sale, Moab featured the most land for sale. Mining and mineral extraction-related services are the main economic drivers in this part of Utah. San Juan County is the largest county in Utah (7,933 square miles). It's located in the East Utah region of Utah.