Lista regionu
- N7W 1B1 - Sarnia, Lambton, Ontario
- N7W 1B2 - Sarnia, Lambton, Ontario
- N7W 1B3 - Sarnia, Lambton, Ontario
- N7W 1B4 - Sarnia, Lambton, Ontario
- N7W 1B5 - Sarnia, Lambton, Ontario
- N7W 1B6 - Sarnia, Lambton, Ontario
- N7W 1B7 - Sarnia, Lambton, Ontario
- N7W 1B8 - Sarnia, Lambton, Ontario
- N7W 1B9 - Sarnia, Lambton, Ontario
- N7W 1C1 - Sarnia, Lambton, Ontario
- N7W 1C3 - Sarnia, Lambton, Ontario
- N7W 1C2 - Sarnia, Lambton, Ontario
- N7W 1C4 - Sarnia, Lambton, Ontario
- N7W 1C5 - Sarnia, Lambton, Ontario
- N7W 1C6 - Sarnia, Lambton, Ontario
- N7W 1C7 - Sarnia, Lambton, Ontario
- N7W 1C8 - Sarnia, Lambton, Ontario
- N7W 1C9 - Sarnia, Lambton, Ontario