Mountainair is a town in Torrance County, New Mexico, United States. The population was 1,116 at the 2000 census. The main visitor center for Salinas Pueblo Missions National Monument is in town. Geography Mountainair is located at (34.519726, -106.243218). According to the United States Census Bureau, the town has a total area of 1.0 square miles (2.7 km²), all of it land. Demographics As of the census of 2000, there were 1,116 people, 452 households, and 281 families residing in the to… (More on Mountainair)