San Antonio is the second most populous city in Texas and is the seventh most populous city in the United States. As of the 2006 U.S. Census estimate, the city had a population just under.3 million. As of 2006, the eight-county metropolitan area has a population of just under 2 million and is the 30th-largest metropolitan area in the USA. San Antonio, which is the county seat of Bexar County, covers over 400 square miles on the northern edge of the South Texas region of the State, and the southern edge of the Central Texas region. The predominant cultural influences have been the American South and Southwest and Mexico. San Antonio apartments for rent comparison page shows most up to date rent information on San Antonio apartments and houses. Rent information is obtained from multiple rental sources but we cannot guarantee their accuracy.