There was a combined $169 million of farms, ranches, hunting land and other land for sale in New Mexico's San Miguel County recently on Land.com. The total size of all San Miguel County ranches, farms, hunting land and other rural land and acreage for sale was almost 100,000 acres. San Miguel County ranks 16th in New Mexico for the combined amount of land currently advertised for sale. Of all locations in San Miguel County with land for sale, Rociada had the most land for sale. Government and state-level services are the main economic drivers in San Miguel County. San Miguel County is one of the ten biggest counties in New Mexico (4,741 square miles). It's located in the Northeast New Mexico region of the state.