Area Code 878
Area Code 878 is in Pennsylvania
(215 and 267) - (272 and 570)
(412 and 878) - (484 and 610)
(724 and 878)
Area Code 878 History:
Area code 878 was put into service. Area code 878 is an overlay of area codes 412 and 724.
Counties in Pennsylvania within area code 878 include:
Allegheny County, Armstrong County, Beaver County, Butler County, Clarion County, Crawford County, Fayette County, Greene County, Indiana County, Lawrence County, Mercer County, Venango County, Washington County, and Westmoreland County.
Major cities or places in Pennsylvania within area code 878 include:
Area codes 412 and 878 serve the Pittsburgh metropolitan area including the larger cities and communities of Bethel Park, Mccandless Township, Mckeesport, Mount Lebanon, Municipality Of Monroeville, Penn Hills, Pittsburgh, Plum, Ross Township, Shaler Township, Upper St. Clair, and West Mifflin in addition to many smaller communities.