| 215 | Pennsylvania (Philadelphia area, overlays with 267) 445 was proposed but never implemented. More information at: Area Code 215 Phone Number Blocks |
| 267 | Pennsylvania (Philadelphia area, overlays with 215) 445 was purposed but never implemented. More information at: Area Code 267 Phone Number Blocks |
| 412 | Pennsylvania (Pittsburgh area, McKeesport, Braddock, Duquesne, overlays with 878) More information at: Area Code 412 Phone Number Blocks |
| 445 | Pennsylvania (Philadelphia area, overlays with 215 and 267) Area code 445 is listed in the North American Numbering Plan web site and other sites (see the Pennsylvania Public Utility Commission web site) as no longer assigned for any location. More information at: Area Code 445 Phone Number Blocks |
| 484 | Pennsylvania (Reading, Allentown, Chester and southeastern Pennsylvania, overlays with 610 and 835) More information at: Area Code 484 Phone Number Blocks |
| 570 | Pennsylvania (Scranton, Williamsport, Wilkes-Barre, Nanticoke, Hazleton, Pottsville, Sunbury, Danville, Bloomsburg, Stroudsburg, and northeastern Pennsylvania) More information at: Area Code 570 Phone Number Blocks |
| 610 | Pennsylvania (Reading, Chester and southeastern Pennsylvania, overlays with 484 and 835) More information at: Area Code 610 Phone Number Blocks |
| 717 | Pennsylvania (Harrisburg, Gettysburg, Lancaster, York and south-central Pennsylvania) More information at: Area Code 717 Phone Number Blocks |
| 724 | Pennsylvania (New Castle, Washington, Uniontown and south western Pennsylvania, overlays with 878) More information at: Area Code 724 Phone Number Blocks |
| 814 | Pennsylvania (Morrisdale, Erie, Warren, State College, Altoona, Johnstown, Meyersdale, Johnsonburg, St. Marys, Ridgway, DuBois, Emporium, and central and northwestern Pennsylvania) More information at: Area Code 814 Phone Number Blocks |
| 835 | Pennsylvania (Reading, Allentown, and southeastern Pennsylvania, overlays with 484 and 610) More information at: Area Code 835 Phone Number Blocks |
| 878 | Pennsylvania (Pittsburgh, New Castle, and southwestern Pennsylvania, overlays with 412 and 724) More information at: Area Code 878 Phone Number Blocks |
