Lista de la región
- N7S 4A6 - Sarnia, Lambton, Ontario
- N7S 4A7 - Sarnia, Lambton, Ontario
- N7S 4A8 - Sarnia, Lambton, Ontario
- N7S 4A9 - Sarnia, Lambton, Ontario
- N7S 4B1 - Sarnia, Lambton, Ontario
- N7S 4B2 - Sarnia, Lambton, Ontario
- N7S 4B3 - Sarnia, Lambton, Ontario
- N7S 4B4 - Sarnia, Lambton, Ontario
- N7S 4B5 - Sarnia, Lambton, Ontario
- N7S 4B6 - Sarnia, Lambton, Ontario
- N7S 4B7 - Sarnia, Lambton, Ontario
- N7S 4B8 - Sarnia, Lambton, Ontario
- N7S 4B9 - Sarnia, Lambton, Ontario
- N7S 4C1 - Sarnia, Lambton, Ontario
- N7S 4C2 - Sarnia, Lambton, Ontario
- N7S 4C3 - Sarnia, Lambton, Ontario
- N7S 4C4 - Sarnia, Lambton, Ontario
- N7S 4C5 - Sarnia, Lambton, Ontario
- N7S 4C6 - Sarnia, Lambton, Ontario
- N7S 4C7 - Sarnia, Lambton, Ontario