Area code 724

Area code 724Area code 716Area code 585Area code 607Area code 845Area codes 973 and 862Area code 908Area codes 410 and 443Area code 302Area codes 240 and 301Area codes 304 and 681Area codes 330 and 234Area code 440Area code 724Area code 878Area code 724Area code 814Area codes 272 and 570Area codes 610, 484, and 835Area code 856Area codes 215, 267, and 445Area codes 609 and 640Area codes 223 and 717Area code 412
Pennsylvania (blue) with numbering plan area 724 shown in red.

Area code 724 is a telephone area code in the North American Numbering Plan for the Commonwealth of Pennsylvania in western and southwestern Pennsylvania, including a portion of the suburbs of Pittsburgh. It was created in an area code split of area code 412 on February 1, 1998, which made the 412 numbering plan area (NPA) an enclave for the city, with 724 surrounding 412. In 2001, area codes 412 and 724 were overlaid with area code 878, so that the entire southwestern corner of Pennsylvania is served by area code 878.

History

In 1947, area code 412 was assigned as one of 86 original North American area codes to a numbering plan area that comprised the entire southwestern corner of Pennsylvania.[1]

The regional carrier Bell Atlantic wanted to implement area code 724 as an overlay complex with 412 at a time when overlays were still a new concept, and were met with resistance because of the requirement for ten-digit dialing. As a result, 724 was implemented by assigning nearly all of the 412 territory outside Allegheny County with the new area code. This created an area code enclave in the city of Pittsburgh.

Within only two years, both 724 and 412 were nearing exhaustion due to rapid growth of telecommunication services in the Pittsburgh area from proliferation of cell phones and pagers. By this time, overlays had gained more acceptance, and area code 878 was implemented as an overlay complex with both the 412 and 724 territories on August 17, 2001, after rationing of central office prefixes ended.[2][3] Since that date, ten-digit dialing has been mandatory in southwestern Pennsylvania.

Telephone number conserving practices mitigated exhaustion of area codes 724 and 412 until April, 2013. The first 878 numbers were issued in April 2013, after 724 central office codes were exhausted. The first 878 numbers in the 412 territory were issued a few years later.

Service area

Major locations in the numbering plan area are: Beaver, Butler, Cranberry Township, Ellwood City, Greensburg, Hermitage, Imperial, Indiana, Kittanning, Latrobe, New Castle, North Huntingdon, Oakdale, Sharon, Uniontown, Washington, Waynesburg, & Wexford.

Area code 724 serves parts of fourteen counties in Pennsylvania.[4]

References

  1. ^ Mabbs, Ralph (Winter 1947–1948). "Nation-Wide Operator Toll Dialing—the Coming Way". Bell Telephone Magazine. 26 (4): 181. Retrieved 2022-04-23.
  2. ^ "Planning Letter 222: NPA 878 to Overlay NPAs 412 and 724 (Pennsylvania)" (PDF). NANPA. 2000-03-14. Retrieved 2023-07-18.
  3. ^ "Planning Letter 281: Rationing in NPAs 412, 724, and 878 (Pennsylvania)" (PDF). NANPA. 2001-05-14. Retrieved 2023-06-23.
  4. ^ "NPA 724 Rate Center Map" (PDF). puc.pa.gov. Archived (PDF) from the original on 2021-12-01.

40°03′07″N 79°49′34″W / 40.052°N 79.826°W / 40.052; -79.826

Pennsylvania area codes: 215/267/445, 412, 570/272, 610/484/835, 717/223, 724, 814/582, 878
North: 814/582
West: 304/681, 330/234, 440/436 724/878
Surrounds 412/878 		East: 814/582
South: 304/681
Ohio area codes: 216, 330/234, 419/567, 440/436, 513/283, 614/380, 740/220, 937/326
West Virginia area codes: 304/681

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