Lista de la región
- L3R 1R1 - Unionville, York, Ontario
- L3R 1R2 - Unionville, York, Ontario
- L3R 1R3 - Unionville, York, Ontario
- L3R 1R4 - Unionville, York, Ontario
- L3R 2E4 - Unionville, York, Ontario
- L3R 2E5 - Unionville, York, Ontario
- L3R 2E6 - Unionville, York, Ontario
- L3R 2E7 - Unionville, York, Ontario
- L3R 2E8 - Unionville, York, Ontario
- L3R 2E9 - Unionville, York, Ontario
- L3R 2G1 - Unionville, York, Ontario
- L3R 2G2 - Unionville, York, Ontario
- L3R 2G3 - Unionville, York, Ontario
- L3R 2G4 - Unionville, York, Ontario
- L3R 2G5 - Unionville, York, Ontario
- L3R 2G6 - Unionville, York, Ontario
- L3R 2G7 - Unionville, York, Ontario
- L3R 2G8 - Unionville, York, Ontario
- L3R 2G9 - Unionville, York, Ontario
- L3R 2H1 - Unionville, York, Ontario