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Oshawa Postcodes — Ontario (ON)
| Location | City/District | States or Territories | States or Territories Abbrieviation | Postcode |
|---|---|---|---|---|
| Oshawa Central | Oshawa | Ontario | ON | L1G |
| Oshawa Southeast | Oshawa | Ontario | ON | L1H |
| Oshawa Southwest | Oshawa | Ontario | ON | L1J |
| Oshawa East | Oshawa | Ontario | ON | L1K |
| Oshawa North | Oshawa | Ontario | ON | L1L |
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