| Postal Code | Place Name | Region | Department | Arrondissement | Canton |
|---|---|---|---|---|---|
| 31210 | Montréjeau | Occitanie | Haute-Garonne | Saint-Gaudens | Saint-Gaudens |
| 31350 | Boulogne-sur-Gesse | Occitanie | Haute-Garonne | Saint-Gaudens | Saint-Gaudens |
| 31580 | Villeneuve-Lécussan | Occitanie | Haute-Garonne | Saint-Gaudens | Saint-Gaudens |
| 31800 | Saint-Gaudens | Occitanie | Haute-Garonne | Saint-Gaudens | Saint-Gaudens |