Seneca City Area Code List
| Area Codes | Country | State | City | Time Zone | Operating |
|---|---|---|---|---|---|
| 308 | US | Nebraska - NE | Seneca | Central / Mountain | Details |
| 417 | US | Missouri - MO | Seneca | Central | Details |
| 541 | US | Oregon - OR | Seneca | Mountain / Pacific | Details |
| 605 | US | South Dakota - SD | Seneca | Central / Mountain | Details |
| 785 | US | Kansas - KS | Seneca | Central / Mountain | Details |
| 815 | US | Illinois - IL | Seneca | Central | Details |
| 864 | US | South Carolina - SC | Seneca | Eastern | Details |