Sunland Park is a city in southern Doña Ana County, New Mexico, United States, on the borders of Texas and the Mexican state of Chihuahua, with Ciudad Juárez adjoining it on the south and El Paso, Texas on the east. The community of Santa Teresa adjoins it on the northwest. The population of Sunland Park was 14,106 at the 2010 census and was estimated at 15,400 by the United States Census Bureau in 2014. Though it lies adjacent to El Paso, being in Doña Ana County makes it a part of the Las Cruces metropolitan statistical area. Las Cruces is 42 miles to the north.The city is at the foot of Mount Cristo Rey, next to the Rio Grande, and is named for Sunland Park Racetrack & Casino, which lies within the city limits. The location was formerly called "Anapra", a name shared by an adjacent slum area of Ciudad Juárez.