Lista regionu
- L3T 3X9 - Thornhill, York, Ontario
- L3T 3Y1 - Thornhill, York, Ontario
- L3T 3Y2 - Thornhill, York, Ontario
- L3T 3Y3 - Thornhill, York, Ontario
- L3T 3Y4 - Thornhill, York, Ontario
- L3T 3Y5 - Thornhill, York, Ontario
- L3T 3Y7 - Thornhill, York, Ontario
- L3T 3Y8 - Thornhill, York, Ontario
- L3T 3Y9 - Thornhill, York, Ontario
- L3T 3Z1 - Thornhill, York, Ontario
- L3T 3Z2 - Thornhill, York, Ontario
- L3T 3Z4 - Thornhill, York, Ontario
- L3T 3Z5 - Thornhill, York, Ontario
- L3T 3Z6 - Thornhill, York, Ontario
- L3T 3Z8 - Thornhill, York, Ontario
- L3T 3Z7 - Thornhill, York, Ontario
- L3T 3Z9 - Thornhill, York, Ontario
- L3T 4A3 - Thornhill, York, Ontario
- L3T 4C1 - Thornhill, York, Ontario
- L3T 4C2 - Thornhill, York, Ontario