Region List
- N7S 1L6 - Sarnia, Lambton, Ontario
- N7S 1L7 - Sarnia, Lambton, Ontario
- N7S 1L8 - Sarnia, Lambton, Ontario
- N7S 1L9 - Sarnia, Lambton, Ontario
- N7S 1M1 - Sarnia, Lambton, Ontario
- N7S 1M2 - Sarnia, Lambton, Ontario
- N7S 1M3 - Sarnia, Lambton, Ontario
- N7S 1M4 - Sarnia, Lambton, Ontario
- N7S 1M5 - Sarnia, Lambton, Ontario
- N7S 1M6 - Sarnia, Lambton, Ontario
- N7S 1M7 - Sarnia, Lambton, Ontario
- N7S 1M8 - Sarnia, Lambton, Ontario
- N7S 1M9 - Sarnia, Lambton, Ontario
- N7S 1N1 - Sarnia, Lambton, Ontario
- N7S 1N2 - Sarnia, Lambton, Ontario
- N7S 1N3 - Sarnia, Lambton, Ontario
- N7S 1N4 - Sarnia, Lambton, Ontario
- N7S 1N5 - Sarnia, Lambton, Ontario
- N7S 1N6 - Sarnia, Lambton, Ontario
- N7S 1N7 - Sarnia, Lambton, Ontario