Region List
- L4A 0G5 - Stouffville, York, Ontario
- L4A 0G6 - Stouffville, York, Ontario
- L4A 0G7 - Stouffville, York, Ontario
- L4A 0G8 - Stouffville, York, Ontario
- L4A 0H1 - Stouffville, York, Ontario
- L4A 0H2 - Stouffville, York, Ontario
- L4A 0H3 - Stouffville, York, Ontario
- L4A 0H4 - Stouffville, York, Ontario
- L4A 0H5 - Stouffville, York, Ontario
- L4A 0H6 - Stouffville, York, Ontario
- L4A 0H7 - Stouffville, York, Ontario
- L4A 0H8 - Stouffville, York, Ontario
- L4A 0H9 - Stouffville, York, Ontario
- L4A 0J1 - Stouffville, York, Ontario
- L4A 0J2 - Stouffville, York, Ontario
- L4A 0J3 - Stouffville, York, Ontario
- L4A 0J4 - Stouffville, York, Ontario
- L4A 0J5 - Stouffville, York, Ontario
- L4A 0J6 - Stouffville, York, Ontario
- L4A 0J7 - Stouffville, York, Ontario