Area codes in Austin, Texas
Austin, Texas uses 2 area codes — 512 and 737. The main Austin area code is 512.
Area codes serving Austin
Phone numbers in Austin are written as ten digits — for example (512) 555-0190 — and fall in the Central Time zone.
How Austin came to have 2 area codes
The original Austin area code is 512, in service since 1947. As the area ran low on available numbers, an overlay code was added over the same region for new phone lines: 737 (2013). Existing numbers kept their original code — an overlay never forces anyone to change their number — which is why Austin now uses all 2 codes and every local call is dialed with ten digits.
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Nearby cities
- Round Rock area codes
- Georgetown area codes
- New Braunfels area codes
- Seguin area codes
- San Antonio area codes
- Killeen area codes
- Kerrville area codes
- Waco 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 Austin?
The main area code for Austin, Texas is 512. Austin is now served by 2 area codes in total: 512, 737.
How many area codes does Austin have?
Austin has 2 area codes: 512, 737.
Why does Austin have more than one area code?
As Austin used up the numbers available in its original area code (512, in service since 1947), additional "overlay" codes were added over the same area so new phone numbers could keep being assigned.
How do you dial a Austin number?
Dial all 10 digits — the area code (512 or 737) 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.