| Postal Code Place Name | Cayeux-sur-Mer |
| Region | Hauts-de-France |
| Department | Somme |
| Arrondissement | Abbeville |
| Canton | Friville-Escarbotin |
| Current Time: | CEST |
| Time Zone: | Central European Summer Time |
| IANA Time Zone: | Europe/Paris |
| Dialing Code: | 03 |
| 80230 Saint-Valery-sur-Somme |
| 80460 Ault |