Area code 657 was created in 2008 as an overlay for area code 714 in southern California. 657 covers northern Orange County, a portion of Los Angeles County, and portions of San Bernardino County.
- 657-200
- Landline Number
- Westminster, CA
- 657-203
- Landline Number
- Huntington Beach, CA
- 657-204
- Landline Number
- Huntington Beach, CA
- 657-205
- Landline Number
- Santa Ana, CA
- 657-210
- Landline Number
- Santa Ana, CA
- 657-212
- Landline Number
- Santa Ana, CA
- 657-215
- Landline Number
- Huntington Beach, CA
- 657-216
- Landline Number
- Placentia, CA
- 657-218
- Landline Number
- Santa Ana, CA
- 657-225
- Landline Number
- Fullerton, CA
- 657-226
- Landline Number
- Santa Ana, CA
- 657-227
- Landline Number
- Santa Ana, CA
- 657-228
- Landline Number
- Santa Ana, CA
- 657-229
- Landline Number
- Santa Ana, CA
- 657-230
- Landline Number
- Santa Ana, CA
- 657-231
- Landline Number
- Santa Ana, CA
- 657-232
- Landline Number
- Santa Ana, CA
- 657-233
- Landline Number
- Santa Ana, CA
- 657-234
- Landline Number
- Santa Ana, CA
- 657-235
- Landline Number
- Santa Ana, CA
- 657-236
- Landline Number
- Santa Ana, CA
- 657-237
- Landline Number
- Santa Ana, CA
- 657-238
- Landline Number
- Santa Ana, CA
- 657-241
- Landline Number
- Santa Ana, CA
- 657-242
- Landline Number
- Santa Ana, CA
- 657-243
- Landline Number
- Santa Ana, CA
- 657-244
- Landline Number
- Santa Ana, CA
- 657-245
- Landline Number
- Santa Ana, CA
- 657-246
- Landline Number
- Santa Ana, CA
- 657-251
- Landline Number
- Santa Ana, CA
- 657-278
- Landline Number
- Fullerton, CA
- 657-300
- Landline Number
- Huntington Beach, CA
- 657-330
- Landline Number
- Fullerton, CA
- 657-378
- Landline Number
- Fullerton, CA
- 657-383
- Landline Number
- Santa Ana, CA
- 657-400
- Landline Number
- Westminster, CA
- 657-444
- Landline Number
- Placentia, CA
- 657-464
- Landline Number
- Huntington Beach, CA
- 657-500
- Landline Number
- Fullerton, CA
- 657-529
- Landline Number
- Buena Park, CA
- 657-600
- Landline Number
- Santa Ana, CA
- 657-622
- Landline Number
- Santa Ana, CA
- 657-666
- Landline Number
- Long Beach, CA
- 657-667
- Landline Number
- Garden Grove, CA
- 657-800
- Landline Number
- Garden Grove, CA
- 657-845
- Landline Number
- Huntington Beach, CA
- 657-859
- Landline Number
- Santa Ana, CA
- 657-900
- Landline Number
- Santa Ana, CA