Farmington is a city in the San Juan County, New Mexico, United States. As of the 2020 census, the city had a population of 46,624 people. Farmington (and surrounding San Juan County) makes up one of the four metropolitan statistical areas (MSAs) in New Mexico.
Farmington is located at the junction of the San Juan River, the Animas River, and the La Plata River, and is located on the Colorado Plateau. Farmington is the largest city of San Juan County, one of the geographically largest counties in the United States covering 5,538 square miles (14,340Â km). Farmington serves as the commercial hub for most of northwestern New Mexico and the Four Corners region of four states. Farmington lies at or near the junction of several highways: U.S. Highway 64, New Mexico Highway 170, New Mexico Highway 371, and New Mexico Highway 516.