Lista regionu
- L3T 3V7 - Thornhill, York, Ontario
- L3T 3V8 - Thornhill, York, Ontario
- L3T 3V9 - Thornhill, York, Ontario
- L3T 3W1 - Thornhill, York, Ontario
- L3T 3W2 - Thornhill, York, Ontario
- L3T 3W3 - Thornhill, York, Ontario
- L3T 3W4 - Thornhill, York, Ontario
- L3T 3W5 - Thornhill, York, Ontario
- L3T 3W6 - Thornhill, York, Ontario
- L3T 3W7 - Thornhill, York, Ontario
- L3T 3W8 - Thornhill, York, Ontario
- L3T 3W9 - Thornhill, York, Ontario
- L3T 3X1 - Thornhill, York, Ontario
- L3T 3X2 - Thornhill, York, Ontario
- L3T 3X3 - Thornhill, York, Ontario
- L3T 3X4 - Thornhill, York, Ontario
- L3T 3X5 - Thornhill, York, Ontario
- L3T 3X6 - Thornhill, York, Ontario
- L3T 3X7 - Thornhill, York, Ontario
- L3T 3X8 - Thornhill, York, Ontario