Region List
- L3T 2A8 - Thornhill, York, Ontario
- L3T 2A9 - Thornhill, York, Ontario
- L3T 2B2 - Thornhill, York, Ontario
- L3T 2B3 - Thornhill, York, Ontario
- L3T 2B4 - Thornhill, York, Ontario
- L3T 2B5 - Thornhill, York, Ontario
- L3T 2B6 - Thornhill, York, Ontario
- L3T 2B7 - Thornhill, York, Ontario
- L3T 2B8 - Thornhill, York, Ontario
- L3T 2B9 - Thornhill, York, Ontario
- L3T 2C1 - Thornhill, York, Ontario
- L3T 2C2 - Thornhill, York, Ontario
- L3T 2C3 - Thornhill, York, Ontario
- L3T 2C4 - Thornhill, York, Ontario
- L3T 2C5 - Thornhill, York, Ontario
- L3T 2C6 - Thornhill, York, Ontario
- L3T 2C7 - Thornhill, York, Ontario
- L3T 2E3 - Thornhill, York, Ontario
- L3T 2E4 - Thornhill, York, Ontario
- L3T 2E5 - Thornhill, York, Ontario