The value of farms and ranches for sale in New Mexico's Santa Fe County recently on Land.com was $1 billion. This represents almost 100,000 acres of farms, ranches, hunting land and other land for sale in Santa Fe County. Santa Fe County ranks first based on the combined acreage of land for sale among the 33 counties in the Land of Enchantment. Santa Fe featured the most land for sale. From an economic perspective, government and state-level services contribute most to Santa Fe County's overall GDP. Santa Fe County is New Mexico's 29th biggest county (1,911 square miles). It's located in the North Central New Mexico region of New Mexico.