Cities in area code 657
Area code 657 serves 13 localities in California, led by Anaheim, Huntington Beach, Santa Ana. The table lists every rate center — the billing locality each prefix is anchored to — with its share of the code's 675 active prefixes.
Anaheim, Huntington Beach, Santa Ana, Westminster, Silverado, Orange, Garden Grove and Cypress hold the largest prefix inventories; and 4 smaller communities down to single-prefix localities. Each locality below links to its rate-center page with the full prefix list.
Metropolitan coverage: 13 rate centers belong to FCC top-100 metro areas.
Overlap note: 13 localities are shared with other area codes, so a neighbor's number may differ in its first three digits.
Clock-wise the coverage is Pacific.
A caller's real location can differ: numbers port between carriers and follow their owners when they move. Use the prefix tables to see where a specific number block was issued.
| Locality (rate center) | Active prefixes | Metro area | All codes serving it |
|---|---|---|---|
| Anaheim | 154 | Los Angeles-Long Beach-Anaheim, CA | 657, 714 |
| Huntington Beach | 134 | Los Angeles-Long Beach-Anaheim, CA | 657, 714 |
| Santa Ana | 115 | Los Angeles-Long Beach-Anaheim, CA | 657, 714 |
| Westminster | 59 | Los Angeles-Long Beach-Anaheim, CA | 657, 714 |
| Silverado | 51 | Los Angeles-Long Beach-Anaheim, CA | 657, 714 |
| Orange | 42 | Los Angeles-Long Beach-Anaheim, CA | 657, 714 |
| Garden Grove | 29 | Los Angeles-Long Beach-Anaheim, CA | 657, 714 |
| Cypress | 26 | Los Angeles-Long Beach-Anaheim, CA | 657, 714 |
| Fullerton | 25 | Los Angeles-Long Beach-Anaheim, CA | 657, 714 |
| Yorba Linda | 11 | Los Angeles-Long Beach-Anaheim, CA | 657, 714 |
| Buena Park | 11 | Los Angeles-Long Beach-Anaheim, CA | 657, 714 |
| Placentia | 10 | Los Angeles-Long Beach-Anaheim, CA | 657, 714 |
| Brea | 8 | Los Angeles-Long Beach-Anaheim, CA | 657, 714 |
FAQ
What is the biggest city in area code 657?
Anaheim holds the most active prefixes (154), making it the code's largest numbering locality.
How many places does 657 cover?
13 rate centers in California hold active 657 prefixes, from Anaheim down to communities with a single prefix.
Does a 657 number guarantee the caller lives in one of these places?
No — the tables show where number blocks were issued. Porting and VoIP let people keep or acquire numbers anywhere.