Area code 707

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458/541775702928442/760916530707209559831805661858909951619213323707916415650510925408209831805661442/760310/424747/818626909951949562657/714
Map of California numbering plan areas (blue) and border states. Area code 707 is shown in red.

Area code 707 is a California telephone area code that was split from area code 916 on March 1, 1959. It covers the northwestern portion of the state of California. It serves part of the northern San Francisco Bay Area, as well as the North Coast and the northwestern portion of the state. Major cities in the area code include Napa, Sebastopol, Vallejo, Benicia, Fairfield, Santa Rosa, Windsor, Healdsburg, Rohnert Park, Petaluma, Fort Bragg, Crescent City, Eureka, Clearlake, Vacaville, Ukiah, and northwestern California. In addition, when area code 916 split into area code 530 on November 1, 1997, the Dixon area moved from area code 916 to 707 and also from the Sacramento LATA into the San Francisco LATA.

When 707 came online, it became California's eighth area code (along with 213, 415, 916, 714, 408, 805, and 209), and the last new area code in the state until 619 was added in 1982. Currently, it is also the only one of those eight area codes that has not been further split, despite explosive growth in the area, particularly its southern portion, as well as the proliferation of cell phones and pagers. (In 1999 a 3-way two-phase split of the 707 area code was scheduled such that a new 627 area code would serve most of Napa and Sonoma Counties as well as small portions of Marin and Mendocino Counties while a new 369 area code would serve Solano County as well as a small portion as Napa County beginning in December of 2000 and October of 2001, respectively. However, due to the implementation of number conservation, the California Public Utilities Commission cancelled both of these splits on July 27, 2000.) As of 2018, area code 707 has been forecast to exhaust in the latter half of 2025.

List of cities and towns[edit]

Del Norte County[edit]

Humboldt County[edit]

Lake County[edit]

Marin County[edit]

Mendocino County[edit]

Napa County[edit]

Solano County[edit]

Sonoma County[edit]

Trinity County[edit]

See also[edit]

External links[edit]

California area codes: 209, 213/323, 310/424, 341/510, 408/669, 415/628, 442/760, 530, 559, 562, 619, 626, 650, 657/714, 661, 707, 747/818, 805, 831, 858, 909, 916, 925, 949, 951
North: 541
West: Pacific Ocean area code 707 East: 530, 916
South: 415, 510, 925
Oregon area codes: 458/541, 503/971

Coordinates: 39°48′N 123°36′W / 39.8°N 123.6°W / 39.8; -123.6