| Postal Code Place Name | Langueux |
| Region | Bretagne |
| Department | Côtes-d'Armor |
| Arrondissement | Saint-Brieuc |
| Canton | Trégueux |
| Current Time: | CEST |
| Time Zone: | Central European Summer Time |
| IANA Time Zone: | Europe/Paris |
| Dialing Code: | 02 |
| 22000 Saint-Brieuc |
| 22120 Yffiniac |
| 22950 Trégueux |