Region List
- L3X 1T2 - Newmarket, York, Ontario
- L3X 1T3 - Newmarket, York, Ontario
- L3X 1T4 - Newmarket, York, Ontario
- L3X 1T5 - Newmarket, York, Ontario
- L3X 1T6 - Newmarket, York, Ontario
- L3X 1T7 - Newmarket, York, Ontario
- L3X 1T8 - Newmarket, York, Ontario
- L3X 1T9 - Newmarket, York, Ontario
- L3X 1V1 - Newmarket, York, Ontario
- L3X 1V2 - Newmarket, York, Ontario
- L3X 1V3 - Newmarket, York, Ontario
- L3X 1V4 - Newmarket, York, Ontario
- L3X 1V5 - Newmarket, York, Ontario
- L3X 1V6 - Newmarket, York, Ontario
- L3X 1V7 - Newmarket, York, Ontario
- L3X 1V8 - Newmarket, York, Ontario
- L3X 1V9 - Newmarket, York, Ontario
- L3X 1W1 - Newmarket, York, Ontario
- L3X 1W3 - Newmarket, York, Ontario
- L3X 1W4 - Newmarket, York, Ontario