Region List
- L3X 1M7 - Newmarket, York, Ontario
- L3X 1M8 - Newmarket, York, Ontario
- L3X 1M9 - Newmarket, York, Ontario
- L3X 1N1 - Newmarket, York, Ontario
- L3X 1N2 - Newmarket, York, Ontario
- L3X 1N3 - Newmarket, York, Ontario
- L3X 1N4 - Newmarket, York, Ontario
- L3X 1N5 - Newmarket, York, Ontario
- L3X 1N6 - Newmarket, York, Ontario
- L3X 1N7 - Newmarket, York, Ontario
- L3X 1N8 - Newmarket, York, Ontario
- L3X 1N9 - Newmarket, York, Ontario
- L3X 1P1 - Newmarket, York, Ontario
- L3X 1P2 - Newmarket, York, Ontario
- L3X 1P3 - Newmarket, York, Ontario
- L3X 1P4 - Newmarket, York, Ontario
- L3X 1P5 - Newmarket, York, Ontario
- L3X 1P6 - Newmarket, York, Ontario
- L3X 1P7 - Newmarket, York, Ontario
- L3X 1P8 - Newmarket, York, Ontario