Williamsport City Area Code List
| Area Codes | Country | State | City | Time Zone | Operating |
|---|---|---|---|---|---|
| 240 | US | Maryland - MD | Williamsport | Eastern | Details |
| 272 | United States | Pennsylvania | Williamsport | Eastern | Details |
| 301 | US | Maryland - MD | Williamsport | Eastern | Details |
| 570 | US | Pennsylvania - PA | Williamsport | Eastern | Details |
| 740 | US | Ohio - OH | Williamsport | Eastern | Details |
| 931 | US | Tennessee - TN | Williamsport | Eastern / Central | Details |