List of California area codes

• 209 – Stockton, Modesto, Merced, Turlock; the northern San Joaquin Valley and the central Sierra Nevada range.
• 213 – Much of the City of Los Angeles and several inner suburbs
• 279 – overlay with 916, started service on March 10, 2018.
• 310 – The western and southwestern parts of Los Angeles County, including the Westside and South Bay regions. These include the cities and towns of Santa Monica, Malibu, Pacific Palisades, Compton, Torrance, Beverly Hills and Catalina Island.
• 323 – Much of the City of Los Angeles and several inner suburbs
• 341 – overlay with 510, started service on July 22, 2019.
• 408 – San Jose, Sunnyvale, Gilroy, Morgan Hill, and Los Gatos; most of Santa Clara County.
• 415 – San Francisco, San Rafael, Novato; all of San Francisco County, most of Marin County and a small portion of northern San Mateo County
• 424 – overlay with 310, started service on August 26, 2006.
• 442 – overlay with 760, started service on October 24, 2009.
• 510 – Oakland, Fremont, Hayward, Berkeley and Richmond; western Alameda and Contra Costa Counties.
• 530 – Redding, Chico, Davis, Marysville, Red Bluff, Oroville, Placerville, Truckee, Yuba City; northeastern California including most of the Sacramento Valley, the northern Sierra Nevada and the Lake Tahoe region.
• 559 – Fresno, Visalia, Madera, Hanford; the central San Joaquin Valley and the southern Sierra Nevada range.
• 562 – Long Beach, Whittier, Norwalk, Lakewood, Bellflower, Cerritos, southeast Los Angeles County and a small portion of coastal Orange County.
• 619 – City of San Diego and suburbs; created by a split from 714 on November 5, 1982; split off 760 on March 22, 1997 and 858 on June 12, 1999; re-merged with 858 in June 2018 to create the 619/858 overlay
• 626 – Pasadena, El Monte, West Covina; the San Gabriel Valley and eastern suburbs of Los Angeles.
• 628 – Overlay with 415, started service on March 21, 2015
• 650 – San Mateo, Palo Alto, Redwood City, Daly City; most of San Mateo County and northwestern Santa Clara County.
• 657 – Overlay with 714, started service on September 23, 2008
• 661 – Bakersfield, Santa Clarita, Palmdale; northern Los Angeles County including the Antelope Valley and most of Kern County, including the southern San Joaquin Valley.
• 669 – Overlay with 408, started service on November 20, 2012
• 707 – Santa Rosa, Eureka, Sebastopol, Petaluma, Napa, Vallejo, Fairfield; northwestern California, including the northern Bay Area, the Redwood Empire and the Wine Country.
• 714 – Anaheim, Huntington Beach, Santa Ana, Orange, Westminster, Garden Grove, etc.; northern and western Orange County
• 747 – Overlay with 818, started service on May 18, 2009
• 760 – Palm Springs, Oceanside, Bishop, Ridgecrest, Barstow, El Centro, Needles, Victorville; northern San Diego County, eastern Riverside and San Bernardino Counties, and the Owens Valley.
• 805 – Santa Barbara, San Luis Obispo, Ventura, Oxnard, Santa Maria, Santa Paula; southwest Central Coast, including San Luis Obispo, Santa Barbara and Ventura counties.
• 818 – The San Fernando Valley of Los Angeles County: Burbank, Van Nuys, Glendale, Chatsworth, San Fernando, Panorama City and Northridge.
• 820 – Overlay with 805, started service on July 2, 2018
• 831 – Monterey, Santa Cruz, Salinas, and Hollister; the northern Central Coast.
• 840 – Overlay of 909 effective February 23, 2021
• 858 – City of San Diego and suburbs; originally created by a split from 619 on June 12, 1999; however, re-merged with 619 to create the 619/858 overlay in June 2018)
• 909 – San Bernardino, Ontario, Pomona, and Chino; eastern Los Angeles County and southwestern San Bernardino County.
• 916 – Sacramento and most of the Sacramento metro: Folsom, Roseville; Sacramento County and southern Placer County
• 925 – Concord, Walnut Creek, Livermore, Pleasanton, San Ramon, Martinez, and Antioch; eastern Alameda and Contra Costa Counties.
• 949 – Irvine, Laguna Beach, Newport Beach, San Juan Capistrano, San Clemente; southern and eastern Orange County.
• 951 – Riverside, Corona, Moreno Valley, Perris, Temecula, Murrieta; western Riverside County.