Area codes 209 and 350

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Numbering plan areas in California (blue) and border states. Area code 209 is shown in red. Area code 209.svg458/541775702928442/760916/279530707209559831805661858909951619213323707916/279415650510/341925408209831805661442/760310/424747/818626909951949562657/714
Numbering plan areas in California (blue) and border states. Area code 209 is shown in red.

Area codes 209 and 350 are telephone area codes in the North American Numbering Plan (NANP) for the U.S. state of California. Their service area includes Stockton, Modesto, Turlock, Merced, Winton, Atwater, Livingston, Manteca, Ripon, Tracy, Lodi, Galt, Sonora, Los Banos, San Andreas, Mariposa, and Yosemite, the northern San Joaquin Valley (part of the Central Valley), and the Sierra Foothills.

Contents

Area code 209 was created in an area code split of area code 415 on October 26, 1957. On November 14, 1998, the southern half of this numbering plan area received the assignment of area code 559.

On October 24, 2021, 209 was transitioned to 1+10-digit dialing despite not being part of an overlay complex at that time. The area code had telephone numbers assigned for the central office code 988, which was designated as a nationwide three-digit dialing code for the 988 Suicide & Crisis Lifeline in 2022. This created a conflict for all NPAs with central office codes of 988 that still permitted seven-digit dialing, [1] requiring all such NPAs to transition to ten-digit dialing.

On November 28, 2022, the 209 numbering plan area was assigned a second area code, 350, to form an overlay complex to address the impending central office code exhaustion in 209 from growth in telecommunication services. [2] The network preparation period was able to be expedited since ten-digit dialing was already in effect. [3]

Service area

Counties
Alpine, Amador, Calaveras, El Dorado, Mariposa, Merced, Sacramento, San Joaquin, Stanislaus, Tuolumne
Towns and cities
Acampo, Big Oak Flat, Burson, Ceres, Chinese Camp, Coarsegold, Clements, Columbia, Crows Landing, Dardanelle, Delhi, Denair, El Portal, Empire, Escalon, Farmington, French Camp, Galt, Groveland, Hathaway Pines, Herald, Hickman, Hilmar, Holt, Hornitos, Hughson, Jamestown, Keyes, Kit Carson, La Grange, Lathrop, Le Grand, Linden, Lockeford, Lodi, Long Barn, Manteca, Mi Wuk Village, Midpines, Moccasin, Modesto, Mount Aukum, Mountain House, Newman, Oakdale, Patterson, Pinecrest, Planada, Ripon, River Pines, Riverbank, Salida, Santa Rita Park, Sheep Ranch, Sonora, Soulsbyville, Standard, Stevinson, Stockton, Thornton, Tracy, Tuolumne, Turlock, Twain Harte, Vernalis, Victor, Waterford, Westley, Wilseyville, Woodbridge, and Yosemite National Park
Alpine County
Amador County
Calaveras County
Mariposa County
Merced County
Sacramento County
San Joaquin County
Stanislaus County
Tuolumne County

See also

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References

  1. "Planning Letter PL-556: Transition to 10-digit dialing (for 988 as 3-digit access to National Suicide Prevention Hotline)" (PDF). North American Numbering Plan Administrator. 2021-01-08. Retrieved 2021-03-09.
  2. "October 2020 NPA Exhaust Analysis–Changes as of March 29, 2021" (PDF). NANPA. 2021-03-29.
  3. "350: The new area code you'll be seeing in the 209 area". 2022-05-20.
California area codes: 209, 213/323, 279/916, 310/424, 341/510, 408/669, 415/628, 442/760, 530, 559, 562, 619/858, 626, 650, 657/714, 661, 707, 747/818, 805/820, 831, 840/909, 925, 949, 951
North: 530, 916/279
West: 408/669, 279/916, 925 209/350East: 442/760
South: 559, 831

38°N121°W / 38°N 121°W / 38; -121