Regionenliste
- L3T 0A1 - Thornhill, York, Ontario
- L3T 0A2 - Thornhill, York, Ontario
- L3T 0A3 - Thornhill, York, Ontario
- L3T 0A4 - Thornhill, York, Ontario
- L3T 0A5 - Thornhill, York, Ontario
- L3T 0A6 - Thornhill, York, Ontario
- L3T 0A7 - Thornhill, York, Ontario
- L3T 0A8 - Thornhill, York, Ontario
- L3T 0A9 - Thornhill, York, Ontario
- L3T 0B1 - Thornhill, York, Ontario
- L3T 0B2 - Thornhill, York, Ontario
- L3T 0B3 - Thornhill, York, Ontario
- L3T 0B4 - Thornhill, York, Ontario
- L3T 0B5 - Thornhill, York, Ontario
- L3T 0B6 - Thornhill, York, Ontario
- L3T 1A1 - Thornhill, York, Ontario
- L3T 1A2 - Thornhill, York, Ontario
- L3T 1A3 - Thornhill, York, Ontario
- L3T 1A4 - Thornhill, York, Ontario
- L3T 1A5 - Thornhill, York, Ontario