San Antonio (/ˌsæn ænˈtoʊnioʊ/; from Spanish, "Saint Anthony"), officially the City of San Antonio, is the seventh-most populous city in the United States, and the second-most populous city in both Texas and the Southern United States, with more than 1. 5 million residents. "San Antonio" ranks second worldwide on the List of popular place names. Founded as a Spanish mission and colonial outpost in 1718, the city became the first chartered civil settlement in present-day Texas in 1731. The area was still part of the Spanish Empire, and later of the Mexican Republic. Today it is the state's oldest municipality. The city of San Antonio celebrated its 300th anniversary on May 1, 2018. The only other city in the United States to celebrate 300 years in 2018 was New Orleans, Louisiana.