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Pennsylvania is currently using ten area codes. Pennsylvania utilizes three area code overlay plans, often called overlay
complexes.
Pennsylvania originally had four area codes when the numbering system was established in 1947. These four area codes were sufficient for forty-seven years until 1994 when area code 215 was
split to form area code 610. Between 1994 and 2001 six new area codes were put into service in Pennsylania.
Changes and History of Pennsylvania Area Codes:
01/01/1947
Area code 215 was put
into service. In 1994 area code 215 was split to form area code 610. In 1999 area code 215 was overlaid with area code 267.
01/01/1947
Area code 412 was put into service. In 1988 area code 412 was
split to form area code 724. In 2001 area code 412 was overlaid with area code 878.
01/01/1947
Area code 717 was put into service. In 1998 area code 717 was split to form area code 570.
01/01/1947
Area code 814 was put into service. |
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