| District of Pennsylvania area codes: 610 | |
|---|---|
| Country | United States |
| State/Province | Pennsylvania |
| Major City | Philadelphia |
| Time Zone | Eastern (UTC-05:00) |
| Prefix | County | Primary City | Company |
|---|---|---|---|
| 610-285 | Berks | New Smithville, PA | Verizon North Inc.-pa (quaker St) |
| 610-286 | Berks | Morgantown, PA | Windstream Conestoga |
| 610-287 | Montgomery | Schwenksville, PA | Verizon Pennsylvania |
| 610-288 | Berks | Reading, PA | Xo Communications Services Inc |
| 610-289 | Lehigh | Allentown, PA | Xo Communications Services Inc |
| 610-290 | Philadelphia | Philadelphia, PA | Mci Worldcom Communications |
| 610-291 | Montgomery | Norristown, PA | Cellco Partnership DBA Verizon Wireless |
| 610-292 | Montgomery | Norristown, PA | Verizon Pennsylvania |
| 610-293 | Delaware | Villanova, PA | Verizon Pennsylvania |
| 610-294 | Bucks | Erwinna, PA | Commonwealth Telephone Company |
| 610-295 | Lehigh | Allentown, PA | Tcg New Jersey |
| 610-296 | Chester | Paoli, PA | Verizon Pennsylvania |
| 610-297 | Northampton | Bethlehem, PA | Tcg New Jersey |
| 610-298 | Lehigh | New Tripoli, PA | Verizon North Inc.-pa (quaker St) |
| 610-299 | Northampton | Nazareth, PA | Cellco Partnership DBA Verizon Wireless |
| 610-300 | Chester | Phoenixville, PA | Core Communications |
| 610-301 | Berks | Reading, PA | Core Communications |
| 610-302 | Berks | Boyertown, PA | Service Electric Telephone Company |
| 610-303 | Montgomery | Bryn Mawr, PA | Usa Mobility Wireless |
| 610-304 | Montgomery | Norristown, PA | Cellco Partnership DBA Verizon Wireless |
There are 774 prefixes, In the code area, the major cities are Allentown, PA;Bethlehem, PA;Chester, PA;Drexel Hil. The major city is Philadelphia.