Seznam oblastí
- K9A 1K2 - Cobourg, Northumberland, Ontario
- K9A 1K3 - Cobourg, Northumberland, Ontario
- K9A 1K4 - Cobourg, Northumberland, Ontario
- K9A 1K5 - Cobourg, Northumberland, Ontario
- K9A 1K6 - Cobourg, Northumberland, Ontario
- K9A 1K7 - Cobourg, Northumberland, Ontario
- K9A 1K9 - Cobourg, Northumberland, Ontario
- K9A 1L1 - Cobourg, Northumberland, Ontario
- K9A 1L2 - Cobourg, Northumberland, Ontario
- K9A 1L3 - Cobourg, Northumberland, Ontario
- K9A 1L4 - Cobourg, Northumberland, Ontario
- K9A 1L5 - Cobourg, Northumberland, Ontario
- K9A 1L6 - Cobourg, Northumberland, Ontario
- K9A 1L7 - Cobourg, Northumberland, Ontario
- K9A 1L8 - Cobourg, Northumberland, Ontario
- K9A 1M1 - Cobourg, Northumberland, Ontario
- K9A 1M2 - Cobourg, Northumberland, Ontario
- K9A 1M3 - Cobourg, Northumberland, Ontario
- K9A 1M4 - Cobourg, Northumberland, Ontario
- K9A 1M5 - Cobourg, Northumberland, Ontario