Lista regionu
- N7S 1B9 - Sarnia, Lambton, Ontario
- N7S 1C1 - Sarnia, Lambton, Ontario
- N7S 1C2 - Sarnia, Lambton, Ontario
- N7S 1C3 - Sarnia, Lambton, Ontario
- N7S 1C4 - Sarnia, Lambton, Ontario
- N7S 1C5 - Sarnia, Lambton, Ontario
- N7S 1C6 - Sarnia, Lambton, Ontario
- N7S 1C7 - Sarnia, Lambton, Ontario
- N7S 1C8 - Sarnia, Lambton, Ontario
- N7S 1C9 - Sarnia, Lambton, Ontario
- N7S 1E1 - Sarnia, Lambton, Ontario
- N7S 1E2 - Sarnia, Lambton, Ontario
- N7S 1E3 - Sarnia, Lambton, Ontario
- N7S 1E4 - Sarnia, Lambton, Ontario
- N7S 1E5 - Sarnia, Lambton, Ontario
- N7S 1E6 - Sarnia, Lambton, Ontario
- N7S 1E7 - Sarnia, Lambton, Ontario
- N7S 1E8 - Sarnia, Lambton, Ontario
- N7S 1E9 - Sarnia, Lambton, Ontario
- N7S 1G1 - Sarnia, Lambton, Ontario