Liste de la région
- L3X 2M9 - Newmarket, York, Ontario
- L3X 2N1 - Newmarket, York, Ontario
- L3X 2N2 - Newmarket, York, Ontario
- L3X 2N3 - Newmarket, York, Ontario
- L3X 2N4 - Newmarket, York, Ontario
- L3X 2N5 - Newmarket, York, Ontario
- L3X 2N6 - Newmarket, York, Ontario
- L3X 2N7 - Newmarket, York, Ontario
- L3X 2N8 - Newmarket, York, Ontario
- L3X 2N9 - Newmarket, York, Ontario
- L3X 2P1 - Newmarket, York, Ontario
- L3X 2P2 - Newmarket, York, Ontario
- L3X 2P3 - Newmarket, York, Ontario
- L3X 2P4 - Newmarket, York, Ontario
- L3X 2P5 - Newmarket, York, Ontario
- L3X 2P6 - Newmarket, York, Ontario
- L3X 2P7 - Newmarket, York, Ontario
- L3X 2P8 - Newmarket, York, Ontario
- L3X 2P9 - Newmarket, York, Ontario
- L3X 2R1 - Newmarket, York, Ontario