| Postal Code Place Name | Arthon-en-Retz |
| Region | Pays de la Loire |
| Department | Loire-Atlantique |
| Arrondissement | Saint-Nazaire |
| Canton | Saint-Brevin-les-Pins |
| Current Time: | CEST |
| Time Zone: | Central European Summer Time |
| IANA Time Zone: | Europe/Paris |
| Dialing Code: | 02 |