Region List
- N7S 2G4 - Sarnia, Lambton, Ontario
- N7S 2G6 - Sarnia, Lambton, Ontario
- N7S 2G7 - Sarnia, Lambton, Ontario
- N7S 2G8 - Sarnia, Lambton, Ontario
- N7S 2G9 - Sarnia, Lambton, Ontario
- N7S 2H1 - Sarnia, Lambton, Ontario
- N7S 2H2 - Sarnia, Lambton, Ontario
- N7S 2H3 - Sarnia, Lambton, Ontario
- N7S 2H4 - Sarnia, Lambton, Ontario
- N7S 2H5 - Sarnia, Lambton, Ontario
- N7S 2H6 - Sarnia, Lambton, Ontario
- N7S 2H7 - Sarnia, Lambton, Ontario
- N7S 2H8 - Sarnia, Lambton, Ontario
- N7S 2H9 - Sarnia, Lambton, Ontario
- N7S 2J1 - Sarnia, Lambton, Ontario
- N7S 2J2 - Sarnia, Lambton, Ontario
- N7S 2J3 - Sarnia, Lambton, Ontario
- N7S 2J4 - Sarnia, Lambton, Ontario
- N7S 2J5 - Sarnia, Lambton, Ontario
- N7S 2J6 - Sarnia, Lambton, Ontario