The area code 210 serves San Antonio, Texas, and the surrounding areas. It was first put into service on November 1, 1992, and was created from area code 512. The area code 210 is located in the Central timezone, also known as America/Chicago. It has a single overlay (726) that serves the same area. The 210 area code covers most of Bexar and small portions of Atascosa, Comal, Guadalupe, Medina, and Wilson counties. The area code 210 has a rich history and has become part of San Antonios identity since its inception in 1992. It is important for businesses to have a local San Antonio phone number with the 210 area code to connect with the local community. The 210 area code has a significant cultural and historical significance for the residents of San Antonio, and its addition of a new area code has raised questions about its impact on the citys identity and branding.