Lista de la región
- L3Y 1A3 - Newmarket, York, Ontario
- L3Y 1A4 - Newmarket, York, Ontario
- L3Y 1A5 - Newmarket, York, Ontario
- L3Y 1A6 - Newmarket, York, Ontario
- L3Y 1A7 - Newmarket, York, Ontario
- L3Y 1A8 - Newmarket, York, Ontario
- L3Y 1A9 - Newmarket, York, Ontario
- L3Y 1B1 - Newmarket, York, Ontario
- L3Y 1B2 - Newmarket, York, Ontario
- L3Y 1B3 - Newmarket, York, Ontario
- L3Y 1B4 - Newmarket, York, Ontario
- L3Y 1B5 - Newmarket, York, Ontario
- L3Y 1B6 - Newmarket, York, Ontario
- L3Y 1B7 - Newmarket, York, Ontario
- L3Y 1B8 - Newmarket, York, Ontario
- L3Y 1B9 - Newmarket, York, Ontario
- L3Y 1C1 - Newmarket, York, Ontario
- L3Y 1C2 - Newmarket, York, Ontario
- L3Y 1C3 - Newmarket, York, Ontario
- L3Y 1C4 - Newmarket, York, Ontario