San Antonio is a city located in the U.S. state of Texas. It serves as the county seat of Bexar County.
The city is the second-most populous city in Texas and the seventh-most populous city in the United States, with a population of 1.43 million according to the 2020 census. The Greater San Antonio metropolitan area has an estimated 2.76 million residents, ranking as the third-largest metropolitan area in Texas and the 24th-largest in the nation.