Seznam oblastí
- L3X 0A1 - Newmarket, York, Ontario
- L3X 0A2 - Newmarket, York, Ontario
- L3X 0A3 - Newmarket, York, Ontario
- L3X 0A4 - Newmarket, York, Ontario
- L3X 0A5 - Newmarket, York, Ontario
- L3X 0A6 - Newmarket, York, Ontario
- L3X 0A7 - Newmarket, York, Ontario
- L3X 0A8 - Newmarket, York, Ontario
- L3X 0A9 - Newmarket, York, Ontario
- L3X 0B1 - Newmarket, York, Ontario
- L3X 0B2 - Newmarket, York, Ontario
- L3X 0B3 - Newmarket, York, Ontario
- L3X 0B4 - Newmarket, York, Ontario
- L3X 0B6 - Newmarket, York, Ontario
- L3X 0B5 - Newmarket, York, Ontario
- L3X 0B7 - Newmarket, York, Ontario
- L3X 0B8 - Newmarket, York, Ontario
- L3X 1A3 - Newmarket, York, Ontario
- L3X 1A4 - Newmarket, York, Ontario
- L3X 1A5 - Newmarket, York, Ontario