Sierra Vista (; Spanish: [ˈsjera ˈβista]) is a city in Cochise County, Arizona, United States. According to the 2020 Census, the population of the city is 45,308, and is the 27th most populous city in Arizona. The city is part of the Sierra Vista-Douglas Metropolitan Area, with a 2010 population of 131,346. Fort Huachuca, a U.S. Army post, has been incorporated and is located in the northwest part of the city. Sierra Vista is bordered by the cities of Huachuca City and Whetstone to the north and Sierra Vista Southeast to the South. Sierra Vista, Spanish for 'mountain view', is 75 miles (121 km) southeast of Tucson and serves as the main commercial, cultural, and recreational hub of Cochise County. Sierra Vista is located on the southwestern side of Cochise County and is 15 miles (24 km) southwest of Tombstone, 20 miles (32 km) northwest of Bisbee, and 15 miles (24 km) from the border of Mexico. The closest port of entry to Mexico is Naco in the Mexican state of Sonora which is 24 miles (39 km) from Sierra Vista to the southeast. Sierra Vista is home to University of Arizona, College of Applied Science and Technology, a Defense Intelligence Agency (DIA) designated Intelligence Community - Center of Academic Excellence (IC-CAE) university, Cochise College, and Wick Communications, a media company operating 27 newspapers and 18 specialty publications in 11 states.