| 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 |
|---|---|---|---|
| 610-305 | Montgomery | Bryn Mawr, PA | Usa Mobility Wireless |
| 610-306 | Montgomery | Norristown, PA | New Cingular Wireless PCS - DC |
| 610-307 | Montgomery | Bryn Mawr, PA | Usa Mobility Wireless |
| 610-308 | Montgomery | Norristown, PA | New Cingular Wireless PCS - DC |
| 610-309 | Montgomery | Bryn Mawr, PA | Usa Mobility Wireless |
| 610-310 | Montgomery | Pottstown, PA | Cellco Partnership DBA Verizon Wireless |
| 610-312 | Philadelphia | Philadelphia, PA | Mci Worldcom Communications |
| 610-313 | Montgomery | Norristown, PA | Verizon Pennsylvania |
| 610-314 | Chester | W Chester, PA | Verizon Pennsylvania |
| 610-315 | Montgomery | Bryn Mawr, PA | Usa Mobility Wireless |
| 610-316 | Montgomery | Norristown, PA | New Cingular Wireless PCS - DC |
| 610-317 | Northampton | Bethlehem, PA | Verizon Pennsylvania |
| 610-318 | Delaware | Media, PA | Usa Mobility Wireless |
| 610-319 | Delaware | Swarthmore, PA | Usa Mobility Wireless |
| 610-320 | Berks | Reading, PA | Verizon Pennsylvania |
| 610-321 | Chester | Chester Springs, PA | Verizon Pennsylvania |
| 610-322 | Montgomery | Norristown, PA | New Cingular Wireless PCS - DC |
| 610-323 | Montgomery | Pottstown, PA | Verizon Pennsylvania |
| 610-324 | Montgomery | Norristown, PA | New Cingular Wireless PCS - DC |
| 610-325 | Delaware | Broomall, PA | Verizon Pennsylvania |
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.