512 Area Code — Austin, TX
Area code 512 serves Austin and 3 other cities in Texas. Local time follows America/Chicago. It overlays with 737, so 10-digit dialling is required.
- State
- Texas
- Primary city
- Austin
- Timezone
- America/Chicago
- In service since
- 1947
- Type
- Geographic
- Overlay codes
- 737
Cities Served by 512
The 512 area code covers 4 cities and communities in Texas.
- Austin
- Round Rock
- Pflugerville
- Cedar Park
About Area Code 512
Area code 512 is a North American Numbering Plan (NANP) area code that has been in service since 1947. It is administered by NANPA on behalf of the FCC and serves the Texas region anchored on Austin.
512 now shares its territory with an overlay code (737). 10-digit dialling is required for local calls within this region because the same 7-digit number can be assigned under either code.
Mobile numbers in 512 are portable: a person who moved away from Austin may still carry a 512 mobile number on their device. If you receive an unexpected call from a 512 number, run it through the reverse lookup tool above for the most accurate, free identification.
If you live or do business in Texas, you may also interact with neighbouring or overlay codes (737). See the related codes section below to explore the rest of Texas.
Other Texas Area Codes
Continue exploring the Texas numbering plan.
512 Area Code FAQ
Where is area code 512?
Area code 512 is located in Texas, primarily serving Austin and surrounding cities including Round Rock, Pflugerville, Cedar Park. The region operates on CT (America/Chicago) time.
What state is 512 area code?
512 is a Texas area code. It was put into service in 1947 and shares its geographic footprint with overlay code 737.
Is 512 a scam area code?
512 is a legitimate North American area code allocated by NANPA to Texas. Like any geographic area code, scammers sometimes spoof 512 numbers — judge each call by content (urgent demands, unfamiliar transfers) rather than the area code alone. Run the specific number through our reverse lookup if you're unsure.
What time zone does 512 use?
Area code 512 operates on CT (America/Chicago). Numbers in this area code follow standard Texas time-zone rules including any daylight-saving transitions for that region.
Can I look up a specific 512 phone number?
Yes. Use the reverse lookup widget above to enter a full 512 number. NumLocation returns the line type (mobile, landline, VoIP), carrier, rate-center city, and any public listings tied to the number — free.
What's the difference between 512 and 737?
512 and 737 cover the same Texas geographic area as overlay codes. Calls between them are local, but you must dial all 10 digits. New phone numbers in this region are assigned from either pool depending on what's available with the carrier at signup.