Region List
- L3X 1C8 - Newmarket, York, Ontario
- L3X 1C9 - Newmarket, York, Ontario
- L3X 1E1 - Newmarket, York, Ontario
- L3X 1E3 - Newmarket, York, Ontario
- L3X 1E4 - Newmarket, York, Ontario
- L3X 1E5 - Newmarket, York, Ontario
- L3X 1E6 - Newmarket, York, Ontario
- L3X 1E7 - Newmarket, York, Ontario
- L3X 1E8 - Newmarket, York, Ontario
- L3X 1E9 - Newmarket, York, Ontario
- L3X 1G1 - Newmarket, York, Ontario
- L3X 1G2 - Newmarket, York, Ontario
- L3X 1G3 - Newmarket, York, Ontario
- L3X 1G4 - Newmarket, York, Ontario
- L3X 1G5 - Newmarket, York, Ontario
- L3X 1G6 - Newmarket, York, Ontario
- L3X 1G7 - Newmarket, York, Ontario
- L3X 1G8 - Newmarket, York, Ontario
- L3X 1G9 - Newmarket, York, Ontario
- L3X 1H1 - Newmarket, York, Ontario