Area codes in San Antonio, Texas
San Antonio, Texas uses 2 area codes — 210 and 726. The main San Antonio area code is 210.
Area codes serving San Antonio
Phone numbers in San Antonio are written as ten digits — for example (210) 555-0190 — and fall in the Central Time zone.
How San Antonio came to have 2 area codes
The original San Antonio area code is 210, in service since 1992. As the area ran low on available numbers, an overlay code was added over the same region for new phone lines: 726 (2017). Existing numbers kept their original code — an overlay never forces anyone to change their number — which is why San Antonio now uses all 2 codes and every local call is dialed with ten digits.
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Nearby cities
- New Braunfels area codes
- Seguin area codes
- Kerrville area codes
- Austin area codes
- Round Rock area codes
- Georgetown area codes
- Killeen area codes
- Eagle Pass area codes
More cities in Texas
- Houston area codes
- Dallas area codes
- Fort Worth area codes
- El Paso area codes
- Lubbock area codes
- Arlington area codes
- Corpus Christi area codes
- Midland area codes
Frequently asked questions
What is the area code for San Antonio?
The main area code for San Antonio, Texas is 210. San Antonio is now served by 2 area codes in total: 210, 726.
How many area codes does San Antonio have?
San Antonio has 2 area codes: 210, 726.
Why does San Antonio have more than one area code?
As San Antonio used up the numbers available in its original area code (210, in service since 1992), additional "overlay" codes were added over the same area so new phone numbers could keep being assigned.
How do you dial a San Antonio number?
Dial all 10 digits — the area code (210 or 726) followed by the 7-digit local number. From abroad, dial +1, then the area code and number.
Sourced from the official NANPA (North American Numbering Plan Administrator) numbering database, current as of August 2, 2026. Refreshed monthly.