Lista de la región
- L4A 1W5 - Stouffville, York, Ontario
- L4A 1W6 - Stouffville, York, Ontario
- L4A 1W7 - Stouffville, York, Ontario
- L4A 1W8 - Stouffville, York, Ontario
- L4A 1W9 - Stouffville, York, Ontario
- L4A 2S1 - Stouffville, York, Ontario
- L4A 2S2 - Stouffville, York, Ontario
- L4A 2S3 - Stouffville, York, Ontario
- L4A 2S4 - Stouffville, York, Ontario
- L4A 2S5 - Stouffville, York, Ontario
- L4A 2S7 - Stouffville, York, Ontario
- L4A 2S8 - Stouffville, York, Ontario
- L4A 2S9 - Stouffville, York, Ontario
- L4A 2T1 - Stouffville, York, Ontario
- L4A 2Z9 - Stouffville, York, Ontario
- L4A 3A1 - Stouffville, York, Ontario
- L4A 3A3 - Stouffville, York, Ontario
- L4A 3A4 - Stouffville, York, Ontario
- L4A 3N6 - Stouffville, York, Ontario
- L4A 3N9 - Stouffville, York, Ontario