Imperial City Area Code List
| Area Codes | Country | State | City | Time Zone | Operating |
|---|---|---|---|---|---|
| 306 | Canada | Saskathcewan | Imperial | Central | Details |
| 308 | US | Nebraska - NE | Imperial | Central / Mountain | Details |
| 412 | US | Pennsylvania - PA | Imperial | Eastern | Details |
| 432 | US | Texas - TX | Imperial | Central | Details |
| 636 | US | Missouri - MO | Imperial | Central | Details |
| 724 | US | Pennsylvania - PA | Imperial | Eastern | Details |
| 760 | US | California - CA | Imperial | Pacific | Details |