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Sarnia Postcodes — Ontario (ON)
| Location | City/District | States or Territories | States or Territories Abbrieviation | Postcode |
|---|---|---|---|---|
| Sarnia Central | Sarnia | Ontario | ON | N7S |
| Sarnia Southwest | Sarnia | Ontario | ON | N7T |
| Sarnia Northwest | Sarnia | Ontario | ON | N7V |
| Sarnia Southeast | Sarnia | Ontario | ON | N7W |
| Sarnia Northeast | Sarnia | Ontario | ON | N7X |
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