| 209 | California (Stockton, Merced, Modesto, Tracy, San Andreas and central California) |
| 213 | California (Downtown Los Angeles area only) |
| 310 | California (Malibu, Torrance, South Bay, Beverly Hills, Santa Monica, Catalina Island, the Los Angeles Westside, and the coastal suburbs of Los Angeles County, overlays with 424) |
| 323 | California (Florence and Los Angeles excluding downtown Los Angeles; see also 213) |
| 341 | California This Area code is scheduled to provide numbering relief for Area code 510 but no date has been assigned for this to go into effect. |
| 369 | California This code is scheduled to provide numbering relief to Area code 707, but no date has been assigned for this to go into effect. |
| 408 | California (Los Gatos, Milpitas, Sunnyvale, Cupertino and San Jose area) |
| 415 | California (San Francisco, Marin County) |
| 424 | California (West Los Angeles), overlay with area code 310 |
| 442 | California This Area code is scheduled to provide numbering relief to Area code 760 but no date has been assigned for this to go into effect. |
| 510 | California (Hayward, Berkeley, Alameda, Oakland, Richmond and Fremont areas) |
| 530 | California (Alturas, Chico, Davis, Redding, Placerville, Truckee and northeastern California) |
| 559 | California (Fresno, Madera, Hanford, Visalia, Tulare and central California; the middle section of the San Joaquin Valley) |
| 562 | California (Long Beach, Lakewood, Bellflower and southeastern Los Angeles suburbs) |
| 619 | California (Southern and eastern suburbs and southern portion of the city of San Diego) Former area code for areas now covered by 858 and 760 |
| 626 | California (Arcadia, Temple City, Covina, Pasadena and eastern Los Angeles suburbs) |
| 627 | California This Area code is scheduled to provide numbering relief to Area code 707 but no date has been assigned for this to go into effect. |
| 628 | California This Area code is scheduled to provide numbering relief to Area code 415 but no date has been assigned for this to go into effect. |
| 650 | California (San Mateo, Palo Alto, Redwood City, Menlo Park, Mountain View and southern San Francisco suburbs) |
| 657 | California This Area code is scheduled to provide numbering relief to Area code 714 with a planned in service date of September 23, 2008. |
| 661 | California (Bakersfield, Mojave, Santa Clarita, Palmdale and south central California) |
| 669 | California This Area code is scheduled to provide numbering relief to Area code 408 but no date has been assigned for this to go into effect. |
| 707 | California (North Bay, Vallejo, Santa Rosa, Fort Bragg, Crescent City, Eureka, Ukiah and northwestern California) |
| 714 | California (Santa Ana, Huntington Beach, Orange, Garden Grove, Tustin, Anaheim, and northern Orange County) |
| 747 | California (San Fernando Valley) This Area code is scheduled to provide numbering relief to area code 818 but no date has been assigned for this to go into effect. |
| 760 | California (Bishop, Ridgecrest, Barstow, eastern portions of San Bernardino and Riverside counties (including the Palm Springs-Indio area), Imperial County, and outer northern suburbs and eastern mountains of San Diego County) |
| 764 | California This Area code is scheduled to provide numbering relief to Area code 650 but no date has been assigned for this to go into effect. |
| 805 | California (San Luis Obispo, Santa Barbara, Isla Vista, Ventura, Santa Paula; southwest central coastal California) |
| 818 | California (Glendale, San Fernando, Burbank and northern Los Angeles suburbs) |
| 831 | California (Salinas, Hollister, Monterey, Santa Cruz and central western coastal California) |
| 858 | California (Del Mar, La Jolla and other inner northern San Diego suburbs, northern half of city of San Diego) |
| 909 | California (western portions of San Bernardino County, including Colton, Grand Terrace, Ontario, Claremont, Pomona, Chino, Redlands, Fontana) Formerly included 951, split off in 2004. |
| 916 | California (Sacramento area) |
| 925 | California (Concord, Walnut Creek, Martinez, Livermore, Pleasanton and Dublin areas) |
| 935 | California This Area code is scheduled to provide numbering relief to Area code 619 but no date has been assigned for this to go into effect. |
| 949 | California (Laguna Niguel, Irvine, Lake Forest, Newport Beach, Corona Del Mar and southern Orange County) |
| 951 | California (western Riverside County, including Corona, Riverside, Temescal Canyon, Lake Elsinore, Mira Loma, Moreno Valley, Perris, Sun City, Murrieta, Temecula, Hemet, Winchester, Lakeview, Nuevo, Beaumont, Banning, Idyllwild; split from 909) Established 2004. |
