San Antonio, TX Area Codes

Area codes serving San Antonio

San Antonio sits in Texas, part of the South region and the Central Time zone. Its numbers are spread across an overlay of 2 codes that all cover the same ground: 210, 726.

The original code is 210 (in service since 1992). As the area ran low on numbers, regulators added overlay codes on top instead of splitting the city, so longtime residents kept their numbers while new lines received a newer code.

Code	Area served	In service
210	San Antonio and most of Bexar County in south-central Texas	November 1, 1992
726	San Antonio and most of Bexar County in south-central Texas	October 23, 2017

Nearby cities sharing these area codes

• Converse
• Universal City
• Live Oak
• Leon Valley
• Alamo Heights
• Helotes
• Kirby
• Windcrest
• Selma
• Castle Hills
• Balcones Heights

How to pick an area code for a new number

When you activate a new line in San Antonio, the carrier assigns whichever code has numbers available — you usually can't choose. If a specific code matters to you (for example the prestige of 210), ask the carrier whether any blocks remain, or request a number transfer. All codes here dial identically and cost the same.

Dialing in San Antonio

Because San Antonio is an overlay area, 10-digit dialing is mandatory: always dial the area code plus the seven-digit number, even for a neighbor. See 10-digit dialing and overlay area codes for the background. For every code in Texas, visit the Texas area codes page.