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  2. List of Oklahoma area codes - Wikipedia

    en.wikipedia.org/wiki/List_of_Oklahoma_area_codes

    The state of Oklahoma is served by the following area codes: 405/572: Central Oklahoma including Oklahoma City (original area code created in 1947; 572 added as overlay on April 24, 2021 [1] [2] [3] 580: Western and southern Oklahoma (split from 405 in 1997) 539/918: Northeastern Oklahoma including Tulsa (918 created in 1953 as split from 405 ...

  3. List of California area codes - Wikipedia

    en.wikipedia.org/wiki/List_of_California_area_codes

    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 ...

  4. List of counties in California - Wikipedia

    en.wikipedia.org/wiki/List_of_counties_in_California

    California State Association of Counties; State map showing the county names and linking to county data; California State Association of Counties- The Creation of Our 58 Counties, with Maps of the 58 Counties Each Decade ca.1850–1900; California State Association of Counties, Map of California Counties: c. 1907–Present

  5. List of counties in Oklahoma - Wikipedia

    en.wikipedia.org/wiki/List_of_counties_in_Oklahoma

    The U.S. state of Oklahoma has 77 counties. It is ranked 20th in size and 17th in the number of counties, between Mississippi with 82 counties and Arkansas with 75 counties. [1] Oklahoma originally had seven counties (Logan, Cleveland, Oklahoma, Canadian, Kingfisher, Payne, and Beaver) when it was first organized as the Oklahoma Territory ...

  6. Area codes 918 and 539 - Wikipedia

    en.wikipedia.org/wiki/Area_codes_918_and_539

    Area codes 918 and 539 are telephone area codes serving Tulsa and northeast Oklahoma. Besides Tulsa, these area codes cover cities such as Bartlesville, Broken Arrow, Claremore, Gore, Jenks, McAlester, Muskogee, Okmulgee, Pryor, Sapulpa, Tahlequah, and northeastern Oklahoma. Area code 918 was created in 1953 as a split from area code 405.

  7. List of North American Numbering Plan area codes - Wikipedia

    en.wikipedia.org/wiki/List_of_North_American...

    split of 405 and to give Oklahoma two area codes, one centered on Oklahoma City and the other centered on Tulsa; 2011: overlaid by 539; 919: North Carolina (the Research Triangle, including Raleigh, the state capital city; Durham, Cary, and Chapel Hill; and Goldsboro and other parts of north-central North Carolina) 1954

  8. List of counties by U.S. state and territory - Wikipedia

    en.wikipedia.org/wiki/List_of_counties_by_U.S...

    The following is a list of the 3,143 counties and county-equivalents in the 50 states and District of Columbia sorted by U.S. state, plus an additional 100 county-equivalents in the U.S. territories sorted by territory.

  9. Category:Area codes in Oklahoma - Wikipedia

    en.wikipedia.org/.../Category:Area_codes_in_Oklahoma

    List of Oklahoma area codes; 0–9. Area codes 405 and 572; Area code 580; Area codes 918 and 539