ALTON City Area Code List
| Area Codes | Country | State | City | Time Zone | Operating |
|---|---|---|---|---|---|
| 417 | US | Missouri - MO | ALTON | Central | Details |
| 434 | US | Virginia - VA | ALTON | Eastern | Details |
| 603 | US | New Hampshire - NH | ALTON | Eastern | Details |
| 618 | US | Illinois - IL | ALTON | Central | Details |
| 712 | US | Iowa - IA | ALTON | Central | Details |
| 785 | US | Kansas - KS | ALTON | Central / Mountain | Details |