| Zip Code | Area Code | City | County | Centroid | Other Information |
| 91390 | 661 | Agua Dulce | Los Angeles | (34.483, -118.429) | Observes Daylight Savings Time |
| 91321 | 661 | Newhall | Los Angeles | (34.3736, -118.491) | Observes Daylight Savings Time |
| 91383 | 661 | Santa Clarita | Los Angeles | (34.3607, -118.459) | Observes Daylight Savings Time |
| 91350 | 661 | Saugus | Los Angeles | (34.4863, -118.394) | Observes Daylight Savings Time |
| 91322 | 661 | Newhall | Los Angeles | (34.3847, -118.53) | Observes Daylight Savings Time |
| 91382 | 661 | Newhall | Los Angeles | (34.3847, -118.53) | Observes Daylight Savings Time |
| 91380 | 661 | Santa Clarita | Los Angeles | (34.4992, -118.398) | Observes Daylight Savings Time |
| 91354 | 661 | Valencia | Los Angeles | (34.4455, -118.547) | Observes Daylight Savings Time |
| 91385 | 661 | Valencia | Los Angeles | (34.3889, -118.56) | Observes Daylight Savings Time |
| 91355 | 661 | Valencia | Los Angeles | (34.4104, -118.576) | Observes Daylight Savings Time |
| 91392 | 818 | Sylmar | Los Angeles | (34.3084, -118.431) | Observes Daylight Savings Time |
| 91342 | 818 | Sylmar | Los Angeles | (34.3072, -118.42) | Observes Daylight Savings Time |
| 91381 | | Stevenson Ranch | Los Angeles | (34.3926436, -118.5918476) | |
| 91381 | 661 | Newhall | Los Angeles | (34.3765, -118.586) | Observes Daylight Savings Time |
| 91340 | 818 | San Fernando | Los Angeles | (34.2862, -118.435) | Observes Daylight Savings Time |
| 91341 | 818 | San Fernando | Los Angeles | (34.282, -118.442) | Observes Daylight Savings Time |
| 91344 | 818 | Granada Hills | Los Angeles | (34.2853, -118.499) | Observes Daylight Savings Time |
| 91345 | 818 | Mission Hills | Los Angeles | (34.2737, -118.474) | Observes Daylight Savings Time |
| 91310 | 661 | Castaic | Los Angeles | (34.4938, -118.619) | Observes Daylight Savings Time |
| 91333 | 818 | Pacoima | Los Angeles | (34.2624, -118.427) | Observes Daylight Savings Time |
| 91384 | 661 | Castaic | Los Angeles | (34.4971, -118.627) | Observes Daylight Savings Time |
| 91326 | 818 | Northridge | Los Angeles | (34.2774, -118.542) | Observes Daylight Savings Time |
| 91395 | 818 | Mission Hills | Los Angeles | (34.2572, -118.464) | Observes Daylight Savings Time |
| 91346 | 818 | Mission Hills | Los Angeles | (34.2572, -118.466) | Observes Daylight Savings Time |
| 91331 | 818 | Pacoima | Los Angeles | (34.2567, -118.421) | Observes Daylight Savings Time |