| Postal Code Place Name | Fréthun |
| Region | Hauts-de-France |
| Department | Pas-de-Calais |
| Arrondissement | Calais |
| Canton | Calais-1 |
| Current Time: | CEST |
| Time Zone: | Central European Summer Time |
| IANA Time Zone: | Europe/Paris |
| Dialing Code: | 03 |
| 62231 Coquelles |
| 62340 Guînes |