| Postal Code Place Name | Reignier-Ésery |
| Region | Auvergne-Rhône-Alpes |
| Department | Haute-Savoie |
| Arrondissement | Saint-Julien-en-Genevois |
| Canton | La Roche-sur-Foron |
| Current Time: | CEST |
| Time Zone: | Central European Summer Time |
| IANA Time Zone: | Europe/Paris |
| Dialing Code: | 04 |