657 area code
Area code 657 is in California. It covers Anaheim, Santa Ana, Huntington Beach and 17 other places: 83 ZIP codes in Orange County. Local time there is , Pacific Time. In service since 2008 as an overlay: it covers the same area as 714, so a number from there can have either code.
- State
- California
- Time zone
- Pacific
- Largest city
- Anaheim
- Overlays
- 714
- In service since
- 2008
- Rate centres
- 13
- Prefixes assigned
- 698 (6,980,000 numbers)
NANPA has relief planning under way for 657: its numbers are running out, and a new overlay or split is being prepared.
Who calls from a 657 number
NANPA records the carrier each block of 657 numbers is assigned to. Of the 7.0 million 657 numbers assigned, 79% are with mobile carriers (Verizon Wireless, T-Mobile and AT&T Mobility); 20% with cable, internet-calling, business and other carriers (Onvoy, Bandwidth and Peerless Network Of California).
That is who the numbers were assigned to: people keep their number when they change carrier, so any one number may have moved since.
| Carrier | Kind | Share |
|---|---|---|
| Verizon Wireless | Mobile | 66% |
| T-Mobile | Mobile | 8% |
| Onvoy | Cable, VoIP, other | 7% |
| AT&T Mobility | Mobile | 5% |
| Bandwidth | Cable, VoIP, other | 4% |
| Peerless Network Of California | Cable, VoIP, other | 2% |
An area code says where a number was issued, not where the caller is: people keep their numbers when they move, and caller ID can be set to show any number, which the FCC calls spoofing. If a call you did not expect asks for money or personal details, the FCC advises hanging up and calling the company back on a number you look up yourself. Unwanted calls can be reported to the FTC at ReportFraud.ftc.gov.
Places in area code 657
The 13 places with a telephone rate centre of their own using 657, largest first. Each links to its ZIP codes.
| Place | ZIP codes | Population |
|---|---|---|
| Anaheim, CA | 17 | 344,521 |
| Santa Ana, CA | 11 | 312,534 |
| Huntington Beach, CA | 6 | 195,240 |
| Garden Grove, CA | 7 | 170,964 |
| Fullerton, CA | 8 | 140,968 |
| Orange, CA | 11 | 138,266 |
| Westminster, CA | 3 | 89,860 |
| Buena Park, CA | 4 | 82,871 |
| Yorba Linda, CA | 3 | 67,170 |
| Placentia, CA | 2 | 52,826 |
| Cypress, CA | 1 | 49,498 |
| Brea, CA | 3 | 47,469 |
| Silverado, CA | 1 | 972 |
Nearby places using 657
These places have no rate centre of their own in NANPA's records; the nearest one uses 657. Near an area-code boundary that can be wrong for part of a town.
ZIP codes in area code 657
83 ZIP codes in 18 towns, by the town each is mailed to, largest first. Each links to its own page.
Where 657 numbers are issued
NANPA's rate centres with the most 657 prefixes (each prefix is 10,000 numbers), under NANPA's own abbreviated names.
| Rate centre | Place | Prefixes |
|---|---|---|
ANAHEIM | Anaheim | 160 |
HUNTITNBCH | Huntington Beach | 141 |
SANTA ANA | Santa Ana | 118 |
WESTMINSTR | Westminster | 60 |
SILVERADO | Silverado | 53 |
ORANGE | Orange | 42 |
Counties
The counties of its ZIP codes, most residents first, with how many of its ZIP codes each has.
Which code covers where you are now? What area code am I in? answers from your location.
Questions about area code 657
Where is area code 657?
Area code 657 is in California. It covers Anaheim, Santa Ana, Huntington Beach and 17 other places: 83 ZIP codes in Orange County.
What ZIP codes are in area code 657?
83 ZIP codes, by the town each is mailed to: Anaheim (17, 92801 to 92899), Santa Ana (11, 92701 to 92799), Huntington Beach (6, 92605 to 92649), Garden Grove (7, 92840 to 92846) and 14 more towns. The full list is on this page.
What time zone is area code 657 in?
Pacific time.
Is a 657 number a mobile or a landline?
It can be either. 79% of 657 numbers are assigned to mobile carriers and under 1% to local phone companies (NANPA, 2026-10-10); the rest are with cable, internet-calling, business and paging carriers. A number keeps its area code when it moves to another carrier.
What area codes overlay 657?
714. They cover the same area as 657, so a new number there can be given any of them.
Does a 657 number mean the caller is in California?
Not necessarily. An area code says where the number was first issued. People keep their numbers when they move or switch carriers, and calling software can show any number, so a 657 call can come from anywhere.
Other area codes in California
- 209 Fresno
- 213 Los Angeles
- 279 Sacramento
- 310 Torrance
- 323 Los Angeles
- 341 Oakland
- 350 Stockton
- 357 Fresno
- 369 Santa Rosa
- 408 San Jose
- 415 San Francisco
- 424 Torrance
- 442 Oceanside
- 510 Oakland
- 530 Chico
- 559 Fresno
- 562 Long Beach
- 619 San Diego
- 626 Pasadena
- 628 San Francisco
- 650 San Mateo
- 661 Bakersfield
- 669 San Jose
- 707 Santa Rosa
- 714 Anaheim
- 738 Los Angeles
- 747 Glendale
- 760 Oceanside
- 805 Bakersfield
- 818 Glendale
- 820 Oxnard
- 831 Salinas
- 837 Chico
- 840 Fontana
- 858 San Diego
- 909 Fontana
- 916 Sacramento
- 925 Concord
- 949 Irvine
- 951 Riverside
All 41 California area codes, by area, with the cities each covers
Source: NANPA NPA database, central office code and thousands-block assignments, 2026-10-10. Places are matched to NANPA's rate centres by name; see sources.
Cite this page
zipcodes.pro. “Area code 657.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/area-code/657
Underlying data is public domain or openly licensed — sources, vintages and licences.