Lista regionu
- N7S 0C3 - Sarnia, Lambton, Ontario
- N7S 0C4 - Sarnia, Lambton, Ontario
- N7S 0C5 - Sarnia, Lambton, Ontario
- N7S 1A1 - Sarnia, Lambton, Ontario
- N7S 1A2 - Sarnia, Lambton, Ontario
- N7S 1A3 - Sarnia, Lambton, Ontario
- N7S 1A4 - Sarnia, Lambton, Ontario
- N7S 1A5 - Sarnia, Lambton, Ontario
- N7S 1A6 - Sarnia, Lambton, Ontario
- N7S 1A7 - Sarnia, Lambton, Ontario
- N7S 1A8 - Sarnia, Lambton, Ontario
- N7S 1A9 - Sarnia, Lambton, Ontario
- N7S 1B1 - Sarnia, Lambton, Ontario
- N7S 1B2 - Sarnia, Lambton, Ontario
- N7S 1B3 - Sarnia, Lambton, Ontario
- N7S 1B4 - Sarnia, Lambton, Ontario
- N7S 1B5 - Sarnia, Lambton, Ontario
- N7S 1B6 - Sarnia, Lambton, Ontario
- N7S 1B7 - Sarnia, Lambton, Ontario
- N7S 1B8 - Sarnia, Lambton, Ontario