List of California area codes

Last updated

Numbering plan areas in California (blue) and border states. Area codes CA.svg458/541775702928442/760916/279530707209559831805661858909951619213323707916/279415650510/341925408209831805661442/760310/424747/818626909951949562657/714
Numbering plan areas in California (blue) and border states.

In 1947, the American Telephone and Telegraph Company (AT&T) devised the first nationwide telephone numbering plan and assigned the original North American area codes. The state of California was divided into three numbering plan areas (NPAs) with distinct area codes: 213, 415, and 916, for the southern, central, and northern parts of the state, respectively. [1] As of July 2023, California has 38 active area codes.

Contents

Area codeService areaNotes
209 Stockton, Modesto, Merced, Turlock; the northern San Joaquin Valley and the central Sierra Nevada range.Split from 415 on October 26, 1957; split off 559 on November 14, 1998; overlaid with 350 on November 28, 2022
213 Much of the City of Los Angeles and several inner suburbsOctober 1947; split numerous times since then, including a split to form code 323 on June 13, 1998; in August 2017, the boundary between 213 and 323 was erased to form an overlay.
279 Sacramento and most of the Sacramento metro: Folsom, Roseville; Sacramento County and southern Placer County 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.Split from 213 on November 2, 1991; overlaid by 424 on August 26, 2006
323 Much of the City of Los Angeles and several inner suburbsoriginally split off from 213 to form a ring around downtown Los Angeles and the city of Montebello on June 13, 1998; in August 2017, the boundary between 213 and 323 was erased to form an overlay. On November 1, 2024, it will also be overlaid by area code 738.
341 overlay with 510started service on July 22, 2019.
350 overlay with 209started service on November 28, 2022.
369 overlay with 707started service on February 1, 2023.
408 San Jose, Sunnyvale, Gilroy, Morgan Hill, and Los Gatos; most of Santa Clara County.Split from 415 on January 1, 1959; overlaid by 669 on November 20, 2012
415 San Francisco, San Rafael, Novato; all of San Francisco County, most of Marin County and a small portion of northern San Mateo County October 1947; split numerous times since then; overlaid by 628 effective March 21, 2015 [2]
424 overlay with 310started service on August 26, 2006.
442 overlay with 760started service on October 24, 2009.
510 Oakland, Fremont, Hayward, Berkeley and Richmond; western Alameda and Contra Costa Counties.Split from 415 on September 2, 1991; overlaid by 341 on July 22, 2019
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.Split from 916 on November 1, 1997
559 Fresno, Visalia, Madera, Hanford; the central San Joaquin Valley and the southern Sierra Nevada range.Split from 209 on November 14, 1998
562 Long Beach, Whittier, Norwalk, Lakewood, Bellflower, Cerritos, southeast Los Angeles County and a small portion of coastal Orange County.Split from 310 on January 25, 1997
619 City of San Diego and suburbscreated 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 Most of the San Gabriel Valley including Pasadena, El Monte, West Covina.Split from 818 on June 14, 1997
628 San Francisco, San Rafael, Novato; all of San Francisco County, most of Marin County and a small portion of northern San Mateo County Overlay with 415, started service on March 21, 2015 [2]
650 San Mateo, Palo Alto, Redwood City, Daly City; most of San Mateo County and northwestern Santa Clara County (i.e., the San Francisco Peninsula with the exception of the city and county of San Francisco).Split from 415 on August 2, 1997
657 Anaheim, Huntington Beach, Santa Ana, Orange, Westminster, Garden Grove, etc.; northern and western Orange CountyOverlay with 714, started service on September 23, 2008
661 Most of Kern County including Bakersfield; northern Los Angeles County including Lancaster, Palmdale, and Santa Clarita.Split from 805 on February 13, 1999
669 San Jose, Sunnyvale, Gilroy, Morgan Hill, and Los Gatos; most of Santa Clara County.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.Split from 916 on March 1, 1959
714 Anaheim, Huntington Beach, Santa Ana, Orange, Westminster, Garden Grove, etc.; northern and western Orange CountySplit from 213 in 1951 and split numerous times since then; overlaid by 657 on September 23, 2008
747 The San Fernando Valley of Los Angeles County: Burbank, Van Nuys, Glendale, Chatsworth, San Fernando, Panorama City and Northridge.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 (including much of the Mojave Desert), and the Owens Valley.Split from 619 on March 22, 1997; overlaid by 442 on October 24, 2009
805 Santa Barbara, San Luis Obispo, Ventura, Oxnard, Santa Maria, Santa Paula; southwest Central Coast, including San Luis Obispo, Santa Barbara and Ventura counties.Split from 213 on January 1, 1957; split off 661 on February 13, 1999; overlaid with 820 on July 2, 2018.
818 The San Fernando Valley of Los Angeles County: Burbank, Van Nuys, Glendale, Chatsworth, San Fernando, Panorama City and Northridge.Split from 213 on January 7, 1984; split off 626 on June 14, 1997; overlaid by 747 on May 18, 2009
820 Santa Barbara, San Luis Obispo, Ventura, Oxnard, Santa Maria, Santa Paula; southwest Central Coast, including San Luis Obispo, Santa Barbara and Ventura counties.Overlay with 805, started service on July 2, 2018
831 Monterey, Santa Cruz, Salinas, and Hollister; the northern Central Coast.Split from 408 on July 11, 1998
840 San Bernardino, Ontario, Pomona, and Chino; eastern Los Angeles County and southwestern San Bernardino County.Overlay of 909 effective February 23, 2021
858 City of San Diego and suburbsOriginally created by a split from 619 on June 12, 1999; however, re-merged with 619 to create the 619/858 overlay in June 2018 [3]
909 San Bernardino, Ontario, Pomona, and Chino; eastern Los Angeles County and southwestern San Bernardino County.Split from 714 on November 14, 1992; split off 951 on July 17, 2004; overlaid with 840 effective February 23, 2021.
916 Sacramento and most of the Sacramento metro: Folsom, Roseville; Sacramento County and southern Placer County October 1947; overlaid with 279 on March 10, 2018
925 Concord, Walnut Creek, Livermore, Pleasanton, San Ramon, Martinez, and Antioch; eastern Alameda and Contra Costa Counties.Split from 510 on March 14, 1998
949 Irvine, Laguna Beach, Newport Beach, San Juan Capistrano, San Clemente; southern and eastern Orange County.Split from 714 on April 18, 1998
951 Riverside, Corona, Moreno Valley, Perris, Temecula, Murrieta; western Riverside County.Split from 909 on July 17, 2004

Area codes 738 and 837 are scheduled for overlay on 213/323 (August 27, 2024), and 530 (January 31, 2025), respectively.

See also

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References

  1. ↑ Mabbs, Ralph (Winter 1947–1948). "Nation-Wide Operator Toll Dialing—the Coming Way". Bell Telephone Magazine. 26 (4): 181. Retrieved 2023-07-01.
  2. 1 2 "415 Area Code". State of California. 2014-11-12. Archived from the original on 2015-02-26. Retrieved 2015-02-25.
  3. ↑ "Planning Letter PL-507: NPA 619 and 858 Boundary Elimination Overlay (California)" (PDF). 2017-05-18. Retrieved 2023-07-01.
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