Regiolijst
- L1G 4X8 - Oshawa, Durham, Ontario
- L1G 4X9 - Oshawa, Durham, Ontario
- L1G 4Y1 - Oshawa, Durham, Ontario
- L1G 4Y2 - Oshawa, Durham, Ontario
- L1G 4Y3 - Oshawa, Durham, Ontario
- L1G 4Y4 - Oshawa, Durham, Ontario
- L1G 4Y5 - Oshawa, Durham, Ontario
- L1G 4Y6 - Oshawa, Durham, Ontario
- L1G 4Y7 - Oshawa, Durham, Ontario
- L1G 4Y9 - Oshawa, Durham, Ontario
- L1G 4Z1 - Oshawa, Durham, Ontario
- L1G 4Z3 - Oshawa, Durham, Ontario
- L1G 4Z4 - Oshawa, Durham, Ontario
- L1G 4Z5 - Oshawa, Durham, Ontario
- L1G 4Z6 - Oshawa, Durham, Ontario
- L1G 4Z7 - Oshawa, Durham, Ontario
- L1G 4Z8 - Oshawa, Durham, Ontario
- L1G 4Z9 - Oshawa, Durham, Ontario
- L1G 5A1 - Oshawa, Durham, Ontario
- L1G 5A2 - Oshawa, Durham, Ontario