Area Code: 878

878 Area Code belongs to the state of Pennsylvania. The following cities fall under this area code: Bethel Park, Mccandless Township, Mckeesport, Mount Lebanon, Municipality Of Monroeville, New Castle, Penn Hills, Pittsburgh, Plum, Ross Township, Shaler Township, Upper St. Clair, West Mifflin. There have been a total of 2015 Numbers for this area code.