Area code 210 serves the heart of San Antonio, Texas—one of the fastest-growing metro areas in the United States. It includes the downtown core, historic districts, and central neighborhoods of San Antonio, as well as surrounding parts of Bexar County. Originally created in 1992 as a split from 512, 210 is now overlaid with 726 to accommodate growing demand. San Antonio is known for its rich history, vibrant culture, and strong economic foundation. It’s home to major military bases like Joint Base San Antonio, Fortune 500 companies like USAA, Valero Energy, and H-E-B, as well as the South Texas Medical Center. Tourism also plays a large role, driven by attractions like the Alamo, River Walk, and vibrant culinary scene. In addition to its economic clout, San Antonio offers affordable living, family-friendly communities, and a strong Latino heritage that shapes local businesses and events. Whether you're running a restaurant, real estate office, or healthcare practice, a 210 number places you right in the middle of Texas’s cultural and economic crossroads.