| 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 |
|---|---|---|---|
| 610-326 | Montgomery | Pottstown, PA | Verizon Pennsylvania |
| 610-327 | Montgomery | Pottstown, PA | Verizon Pennsylvania |
| 610-328 | Delaware | Swarthmore, PA | Verizon Pennsylvania |
| 610-329 | Montgomery | Norristown, PA | New Cingular Wireless PCS - DC |
| 610-330 | Northampton | Easton, PA | Verizon Pennsylvania |
| 610-331 | Montgomery | Norristown, PA | Cellco Partnership DBA Verizon Wireless |
| 610-332 | Northampton | Bethlehem, PA | Xo Communications Services Inc |
| 610-333 | Northampton | Easton, PA | Tcg New Jersey |
| 610-334 | Berks | Reading, PA | Cellco Partnership DBA Verizon Wireless |
| 610-335 | Chester | Kennett Sq, PA | Tcg New Jersey |
| 610-336 | Lehigh | Allentown, PA | Verizon Pennsylvania |
| 610-337 | Montgomery | King Of Prussia, PA | Verizon Pennsylvania |
| 610-338 | Delaware | Swarthmore, PA | Verizon Pennsylvania |
| 610-339 | Lehigh | Allentown, PA | Usa Mobility Wireless |
| 610-340 | Montgomery | Pottstown, PA | Us Lec Of Pennsylvania |
| 610-341 | Delaware | Villanova, PA | Verizon Pennsylvania |
| 610-342 | Montgomery | Collegeville, PA | Tcg New Jersey |
| 610-343 | Chester | Downingtown, PA | Tcg New Jersey |
| 610-344 | Chester | W Chester, PA | Verizon Pennsylvania |
| 610-345 | Chester | West Grove, 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.