| Start Date | 11/21/2009 |
| Current Time in Area Code 442 | 442> PST |
| Timezone | Pacific Standard Time |
| Regional Market Area | Fresno-Visalia Area Metro Los Angeles Metro San Diego Reno Area |
| Metro Area(s) | El Centro, CA Riverside-San Bernardino-Ontario, CA San Diego-Chula Vista-Carlsbad, CA |
| Population (2020) | 8110386 |
| Adjacent Area Codes | 209,530,559,619,661,702,725,760,775,840,858,909,928,949,951 |
| Imperial County |
| Inyo County |
| Mono County |
| Riverside County |
| San Bernardino County |
| San Diego County |
| Adelanto |
| Apple Valley |
| Calexico |
| Carlsbad |
| Cathedral City |
| Coachella |
| El Centro |
| Encinitas |
| Escondido |
| Fallbrook |
| Hesperia |
| Indio |
| La Quinta |
| Oceanside |
| Palm Desert |
| Palm Springs |
| San Marcos |
| Victorville |
| Vista |