Postal Code N4X
St. Mary's · Ontario
N4X is the postal code of St. Mary's in Ontario, Canada. This list covers forward sortation areas (FSA) — the first three characters of a Canadian postal code, such as T0A.
- Postal Code
- N4X
- Area
- —
- Province
- Ontario
- Country
- Canada
Place with postal code N4X
| Place | Area | Location |
|---|---|---|
| St. Mary's | — | 43.266, -81.169 |
Near Hamilton
The nearest major city is Hamilton, about 107 km away.
Nearby postal codes
Frequently asked questions
Which places use postal code N4X?
St. Mary's.
Which area and province is N4X in?
Ontario, Canada.
What is the nearest major city to N4X?
Hamilton, about 107 km away.
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.