| 209 | California (Stockton, Merced, Modesto, Tracy, San Andreas and central California) More information at: Area Code 209 Phone Number Blocks |
| 213 | California (Downtown Los Angeles area only) More information at: Area Code 213 Phone Number Blocks |
| 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) More information at: Area Code 310 Phone Number Blocks |
| 323 | California (Florence and Los Angeles excluding downtown Los Angeles; see also 213) More information at: Area Code 323 Phone Number Blocks |
| 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. More information at: Area Code 341 Phone Number Blocks |
| 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. More information at: Area Code 369 Phone Number Blocks |
| 408 | California (Los Gatos, Milpitas, Sunnyvale, Cupertino and San Jose area) More information at: Area Code 408 Phone Number Blocks |
| 415 | California (San Francisco, Marin County) More information at: Area Code 415 Phone Number Blocks |
| 424 | California (West Los Angeles), overlay with area code 310 More information at: Area Code 424 Phone Number Blocks |
| 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. More information at: Area Code 442 Phone Number Blocks |
| 510 | California (Hayward, Berkeley, Alameda, Oakland, Richmond and Fremont areas) More information at: Area Code 510 Phone Number Blocks |
| 530 | California (Alturas, Chico, Davis, Redding, Placerville, Truckee and northeastern California) More information at: Area Code 530 Phone Number Blocks |
| 559 | California (Fresno, Madera, Hanford, Visalia, Tulare and central California; the middle section of the San Joaquin Valley) More information at: Area Code 559 Phone Number Blocks |
| 562 | California (Long Beach, Lakewood, Bellflower and southeastern Los Angeles suburbs) More information at: Area Code 562 Phone Number Blocks |
| 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 More information at: Area Code 619 Phone Number Blocks |
| 626 | California (Arcadia, Temple City, Covina, Pasadena and eastern Los Angeles suburbs) More information at: Area Code 626 Phone Number Blocks |
| 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. More information at: Area Code 627 Phone Number Blocks |
| 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. More information at: Area Code 628 Phone Number Blocks |
| 650 | California (San Mateo, Palo Alto, Redwood City, Menlo Park, Mountain View and southern San Francisco suburbs) More information at: Area Code 650 Phone Number Blocks |
| 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. More information at: Area Code 657 Phone Number Blocks |
| 661 | California (Bakersfield, Mojave, Santa Clarita, Palmdale and south central California) More information at: Area Code 661 Phone Number Blocks |
| 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. More information at: Area Code 669 Phone Number Blocks |
| 707 | California (North Bay, Vallejo, Santa Rosa, Fort Bragg, Crescent City, Eureka, Ukiah and northwestern California) More information at: Area Code 707 Phone Number Blocks |
| 714 | California (Santa Ana, Huntington Beach, Orange, Garden Grove, Tustin, Anaheim, and northern Orange County) More information at: Area Code 714 Phone Number Blocks |
| 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. More information at: Area Code 747 Phone Number Blocks |
| 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) More information at: Area Code 760 Phone Number Blocks |
| 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. More information at: Area Code 764 Phone Number Blocks |
| 805 | California (San Luis Obispo, Santa Barbara, Isla Vista, Ventura, Santa Paula; southwest central coastal California) More information at: Area Code 805 Phone Number Blocks |
| 818 | California (Glendale, San Fernando, Burbank and northern Los Angeles suburbs) More information at: Area Code 818 Phone Number Blocks |
| 831 | California (Salinas, Hollister, Monterey, Santa Cruz and central western coastal California) More information at: Area Code 831 Phone Number Blocks |
| 858 | California (Del Mar, La Jolla and other inner northern San Diego suburbs, northern half of city of San Diego) More information at: Area Code 858 Phone Number Blocks |
| 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. More information at: Area Code 909 Phone Number Blocks |
| 916 | California (Sacramento area) More information at: Area Code 916 Phone Number Blocks |
| 925 | California (Concord, Walnut Creek, Martinez, Livermore, Pleasanton and Dublin areas) More information at: Area Code 925 Phone Number Blocks |
| 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. More information at: Area Code 935 Phone Number Blocks |
| 949 | California (Laguna Niguel, Irvine, Lake Forest, Newport Beach, Corona Del Mar and southern Orange County) More information at: Area Code 949 Phone Number Blocks |
| 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. More information at: Area Code 951 Phone Number Blocks |
