210 Area Code — San Antonio, TX
Area code 210 serves San Antonio and 2 other cities in Texas. Local time follows America/Chicago. It overlays with 726, so 10-digit dialling is required.
- State
- Texas
- Primary city
- San Antonio
- Timezone
- America/Chicago
- In service since
- 1992
- Type
- Geographic
- Overlay codes
- 726
Cities Served by 210
The 210 area code covers 3 cities and communities in Texas.
- San Antonio
- Schertz
- Live Oak
About Area Code 210
Area code 210 is a North American Numbering Plan (NANP) area code that has been in service since 1992. It is administered by NANPA on behalf of the FCC and serves the Texas region anchored on San Antonio.
210 now shares its territory with an overlay code (726). 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 210 are portable: a person who moved away from San Antonio may still carry a 210 mobile number on their device. If you receive an unexpected call from a 210 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 (726). See the related codes section below to explore the rest of Texas.
Other Texas Area Codes
Continue exploring the Texas numbering plan.
210 Area Code FAQ
Where is area code 210?
Area code 210 is located in Texas, primarily serving San Antonio and surrounding cities including Schertz, Live Oak. The region operates on CT (America/Chicago) time.
What state is 210 area code?
210 is a Texas area code. It was put into service in 1992 and shares its geographic footprint with overlay code 726.
Is 210 a scam area code?
210 is a legitimate North American area code allocated by NANPA to Texas. Like any geographic area code, scammers sometimes spoof 210 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 210 use?
Area code 210 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 210 phone number?
Yes. Use the reverse lookup widget above to enter a full 210 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 210 and 726?
210 and 726 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.