รายชื่อภูมิภาค
- L3T 3C1 - Thornhill, York, Ontario
- L3T 3C2 - Thornhill, York, Ontario
- L3T 3C3 - Thornhill, York, Ontario
- L3T 3C4 - Thornhill, York, Ontario
- L3T 3C5 - Thornhill, York, Ontario
- L3T 3C6 - Thornhill, York, Ontario
- L3T 3C7 - Thornhill, York, Ontario
- L3T 3C8 - Thornhill, York, Ontario
- L3T 3C9 - Thornhill, York, Ontario
- L3T 3E1 - Thornhill, York, Ontario
- L3T 3E2 - Thornhill, York, Ontario
- L3T 3E3 - Thornhill, York, Ontario
- L3T 3E4 - Thornhill, York, Ontario
- L3T 3E5 - Thornhill, York, Ontario
- L3T 3E6 - Thornhill, York, Ontario
- L3T 3E7 - Thornhill, York, Ontario
- L3T 3E8 - Thornhill, York, Ontario
- L3T 3E9 - Thornhill, York, Ontario
- L3T 3G1 - Thornhill, York, Ontario
- L3T 3G2 - Thornhill, York, Ontario