Danh sách vùng
- N7S 0A1 - Sarnia, Lambton, Ontario
- N7S 0A2 - Sarnia, Lambton, Ontario
- N7S 0A3 - Sarnia, Lambton, Ontario
- N7S 0A4 - Sarnia, Lambton, Ontario
- N7S 0A5 - Sarnia, Lambton, Ontario
- N7S 0A6 - Sarnia, Lambton, Ontario
- N7S 0A7 - Sarnia, Lambton, Ontario
- N7S 0A8 - Sarnia, Lambton, Ontario
- N7S 0A9 - Sarnia, Lambton, Ontario
- N7S 0B1 - Sarnia, Lambton, Ontario
- N7S 0B2 - Sarnia, Lambton, Ontario
- N7S 0B3 - Sarnia, Lambton, Ontario
- N7S 0B4 - Sarnia, Lambton, Ontario
- N7S 0B5 - Sarnia, Lambton, Ontario
- N7S 0B6 - Sarnia, Lambton, Ontario
- N7S 0B7 - Sarnia, Lambton, Ontario
- N7S 0B8 - Sarnia, Lambton, Ontario
- N7S 0B9 - Sarnia, Lambton, Ontario
- N7S 0C1 - Sarnia, Lambton, Ontario
- N7S 0C2 - Sarnia, Lambton, Ontario