737 Area Code — Austin, TX
Area code 737 serves Austin and 2 other cities in Texas. Local time follows America/Chicago. It overlays with 512, so 10-digit dialling is required.
- State
- Texas
- Primary city
- Austin
- Timezone
- America/Chicago
- In service since
- 2013
- Type
- Overlay
- Overlay codes
- 512
Overlay of 512
Cities Served by 737
The 737 area code covers 3 cities and communities in Texas.
- Austin
- Round Rock
- Pflugerville
About Area Code 737
Area code 737 is a North American Numbering Plan (NANP) area code that has been in service since 2013. It is administered by NANPA on behalf of the FCC and serves the Texas region anchored on Austin.
737 is an overlay code, which means it shares its geographic boundaries with one or more existing area codes (512). Overlays are created when a region exhausts the supply of phone numbers in its original area code. Within an overlay region, residents must dial all 10 digits even for local calls, because the same 7-digit number can exist under multiple area codes.
Mobile numbers in 737 are portable: a person who moved away from Austin may still carry a 737 mobile number on their device. If you receive an unexpected call from a 737 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 (512). See the related codes section below to explore the rest of Texas.
Other Texas Area Codes
Continue exploring the Texas numbering plan.
737 Area Code FAQ
Where is area code 737?
Area code 737 is located in Texas, primarily serving Austin and surrounding cities including Round Rock, Pflugerville. The region operates on CT (America/Chicago) time.
What state is 737 area code?
737 is a Texas area code. It was put into service in 2013 as an overlay and shares its geographic footprint with overlay code 512.
Is 737 a scam area code?
737 is a legitimate North American area code allocated by NANPA to Texas. Like any geographic area code, scammers sometimes spoof 737 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 737 use?
Area code 737 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 737 phone number?
Yes. Use the reverse lookup widget above to enter a full 737 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 737 and 512?
737 and 512 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.