Lista de região
- L3Y 1Y2 - Newmarket, York, Ontario
- L3Y 1Y3 - Newmarket, York, Ontario
- L3Y 1Y4 - Newmarket, York, Ontario
- L3Y 1Y5 - Newmarket, York, Ontario
- L3Y 1Y6 - Newmarket, York, Ontario
- L3Y 1Y7 - Newmarket, York, Ontario
- L3Y 1Y8 - Newmarket, York, Ontario
- L3Y 1Y9 - Newmarket, York, Ontario
- L3Y 1Z1 - Newmarket, York, Ontario
- L3Y 1Z2 - Newmarket, York, Ontario
- L3Y 1Z3 - Newmarket, York, Ontario
- L3Y 1Z4 - Newmarket, York, Ontario
- L3Y 1Z5 - Newmarket, York, Ontario
- L3Y 1Z6 - Newmarket, York, Ontario
- L3Y 1Z7 - Newmarket, York, Ontario
- L3Y 1Z8 - Newmarket, York, Ontario
- L3Y 1Z9 - Newmarket, York, Ontario
- L3Y 2A1 - Newmarket, York, Ontario
- L3Y 2A2 - Newmarket, York, Ontario
- L3Y 2A3 - Newmarket, York, Ontario