Newmarket Area Postal Codes
Ontario, Canada · 2 codes
Newmarket Area in Ontario has 2 postal codes, from L3X to L3Y, serving 2 places.
Postal codes in Newmarket
Frequently asked questions
What is the postal code of Newmarket?
Newmarket has 2 postal codes, from L3X to L3Y. The table lists the places each one serves.
How many places are listed in Newmarket Area?
2 places.
Source: GeoNames postal codes (CC BY 4.0), geonames.org, retrieved 2026-10-22. Place coordinates are approximate. Check with the national postal service before sending anything valuable.