Seymour City Area Code List
| Area Codes | Country | State | City | Time Zone | Operating |
|---|---|---|---|---|---|
| 203 | US | Connecticut - CT | Seymour | Eastern | Details |
| 417 | US | Missouri - MO | Seymour | Central | Details |
| 475 | US | Connecticut - CT | Seymour | Eastern | Details |
| 641 | US | Iowa - IA | Seymour | Central | Details |
| 812 | US | Indiana - IN | Seymour | Eastern / Central | Details |
| 920 | US | Wisconsin - WI | Seymour | Central | Details |
| 940 | US | Texas - TX | Seymour | Central | Details |