J9B 1M4 is Canadian Postal Code located in Chelsea Quebec.
| Postal Code | J9B 1M4 |
| Forward Sortation Area | J9B |
| Name | Chelsea |
| Province | Quebec |
| Administrative Division | Les Collines-de-l'Outaouais Regional County Municipality |
| Timezone | Eastern Daylight Time (EDT) |
| Area Code(s) | 819 / 873 |