| Place | Post Code |
|---|---|
| Candiac, Roussillon | J5R |
| Châteauguay, Roussillon | J6J, J6K |
| Delson, Roussillon | J5B |
| Kahnawake, Roussillon | J0L 0B1, J0L 1B0 |
| L'Île-Perrot, Roussillon | J7V |
| La Prairie, Roussillon | J5R |
| Léry, Roussillon | J6N |
| Mercier, Roussillon | J6R |
| Saint-Constant, Roussillon | J5A |
| Saint-Édouard-de-Napierville, Roussillon | J0L |
| Saint-Isidore-de-Laprairie, Roussillon | J0L |
| Saint-Philippe, Roussillon | J0L |
| Sainte-Catherine, Roussillon | J5C |