Las Cruces, also known as "The City of the Crosses", is the county seat of Doña Ana County, New Mexico, United States. The population was 97,618 in 2010 according to the 2010 Census, making it the second largest city in the state.Las Cruces is the economic and geographic center of the fertile Mesilla Valley, which is the agricultural region on the flood plain of the Rio Grande which extends from Hatch, New Mexico to the west side of El Paso, Texas. Las Cruces is also the home of New Mexico State University (NMSU), New Mexico's only land grant university. The city's major employer is the federal government on nearby White Sands Test Facility and White Sands Missile Range. Recently the city has been home to many of the retired from across the country. The majestic Organ Mountains, ten miles (16 km) to the east, are dominant in the city's landscape, along with the Doña Ana Mountains, Robledo Mountains, and Picacho Peak.