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Area code 510 is shown in red. Area codes 510 and 341 are telephone area codes in the North American Numbering Plan (NANP) serving much of the East Bay in the U.S. state of California. They cover parts of Contra Costa County and western Alameda County, including the city of Oakland, but excluding Dublin, Livermore, Pleasanton, and Sunol.
On November 1, 2024, it will also be overlaid by area code 738. 341: overlay with 510: started service on July 22, 2019. 350: overlay with 209: started service on November 28, 2022. 369: overlay with 707: started service on February 1, 2023. 408: San Jose, Sunnyvale, Gilroy, Morgan Hill, and Los Gatos; most of Santa Clara County.
Area codes: 510/341: FIPS code: 06-53000: ... 1857 map of Oakland. In 1851, three men ... In 2012, Oakland was dubbed a "New Sin City", following its 2010 decision to ...
As a result, Oakland County received the new area code 248, with a start of permissive dialing on May 10, 1997. [3] Thus, the Oakland County numbering plan area was surrounded on three sides by area code 810, with 313 to the south. Then, only four years after splitting off area code 248, continued demand in the area necessitated the Michigan ...
Other area codes that are expected to exhaust by the end of 2027 that do not have an approved relief plan: 352, 502, 520, 603, 714/657, 718/347/929, 765 and 949. [ 24 ] See also
Originally part of area code 408. 916/279 — Sacramento County and the Sacramento suburbs in western Placer and El Dorado Counties. One of the three original area codes in California, formerly covered all areas now within 530. 925 — Outer East Bay (Concord, Pittsburg, Walnut Creek, San Ramon, Pleasanton and Livermore). Originally part of ...
Michigan (Oakland County) May 10, 1997: split of 810; ... was authorized as a relief area code in New Jersey, but 862 was used; 357: Fresno California: March 26, 2025:
After the success of these trials, [23] [27] expansion of the numbering plan accelerated with new crossbar systems and four new area codes in 1953, and seven in 1954. By the end of the decade thirty-one new area codes had been created in addition to the initial allotment of 1947. [28] to satisfy the post-war surge in demand for telephone service.