San Antonio (/ˌsæn ænˈtoʊnioʊ/ SAN an-TOH-nee-oh; Spanish for "Saint Anthony"), officially the City of San Antonio, is a city in Texas, United States. The city is the seventh-most populous in the United States, the second-largest in the Southern United States, and the second-most populous in Texas. It is the 12th most-populous city in North America, with 1,434,625 residents in 2020.
Founded as a Spanish mission and colonial outpost in 1718, the city in 1731 became the first chartered civil settlement in what is now present-day Texas. The area was then part of the Spanish Empire. From 1821 to 1836, it was part of the Mexican Republic. It is the oldest municipality in Texas, having celebrated its 300th anniversary on May 1, 2018.
It is located in northern Xinjiang and central Altay region. It is located at 45 °00 °N, 48 °10 °N and 87 °00 °E, 89 °04', respectively. It is bordered by Fuyun County in the east, Jimunai County, Tacheng area and Buxel Mongolia Autonomous County in the west, Fukang City, Changji Hui Autonomous Prefecture in the south, Altay City and Beitun City in the north, and Mongolia in the northeast. The border is 51 kilometers long. The area is 350km long from north to south and 25km to 150km wide from east to west, with a total area of 32400 square kilometers. Fuhai County has a population of 65600 (2013), which is composed of 32 ethnic groups, of which Han 31800, accounting for 48.4%; Kazak 30, 000, accounting for 45.7%; Hui, Uygur and other ethnic minorities 3800, accounting for 5.9%