ZIP Code 98592
Union · Mason, Washington
98592 is the ZIP code of Union in Mason, Washington, United States.
- ZIP Code
- 98592
- County
- Mason
- State
- Washington
- Country
- United States
Place with ZIP code 98592
| Place | County | Location |
|---|---|---|
| Union | Mason | 47.337, -123.075 |
Near Seattle
The nearest major city is Seattle, about 63 km away.
Nearby ZIP codes
Frequently asked questions
Which places use ZIP code 98592?
Union.
Which county and state is 98592 in?
Mason, Washington, United States.
What is the nearest major city to 98592?
Seattle, about 63 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.