657 Area Code — Anaheim, CA
Area code 657 serves Anaheim and 3 other cities in California. Local time follows America/Los_Angeles. It overlays with 714, so 10-digit dialling is required.
- State
- California
- Primary city
- Anaheim
- Timezone
- America/Los_Angeles
- In service since
- 2008
- Type
- Overlay
- Overlay codes
- 714
Overlay of 714
Cities Served by 657
The 657 area code covers 4 cities and communities in California.
- Anaheim
- Santa Ana
- Huntington Beach
- Irvine
About Area Code 657
Area code 657 is a North American Numbering Plan (NANP) area code that has been in service since 2008. It is administered by NANPA on behalf of the FCC and serves the California region anchored on Anaheim.
657 is an overlay code, which means it shares its geographic boundaries with one or more existing area codes (714). 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 657 are portable: a person who moved away from Anaheim may still carry a 657 mobile number on their device. If you receive an unexpected call from a 657 number, run it through the reverse lookup tool above for the most accurate, free identification.
If you live or do business in California, you may also interact with neighbouring or overlay codes (714). See the related codes section below to explore the rest of California.
Other California Area Codes
Continue exploring the California numbering plan.
657 Area Code FAQ
Where is area code 657?
Area code 657 is located in California, primarily serving Anaheim and surrounding cities including Santa Ana, Huntington Beach, Irvine. The region operates on PT (America/Los_Angeles) time.
What state is 657 area code?
657 is a California area code. It was put into service in 2008 as an overlay and shares its geographic footprint with overlay code 714.
Is 657 a scam area code?
657 is a legitimate North American area code allocated by NANPA to California. Like any geographic area code, scammers sometimes spoof 657 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 657 use?
Area code 657 operates on PT (America/Los_Angeles). Numbers in this area code follow standard California time-zone rules including any daylight-saving transitions for that region.
Can I look up a specific 657 phone number?
Yes. Use the reverse lookup widget above to enter a full 657 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 657 and 714?
657 and 714 cover the same California 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.