ZIP Code 98611
Castle Rock · Cowlitz, Washington
98611 is the ZIP code of Castle Rock in Cowlitz, Washington, United States.
- ZIP Code
- 98611
- County
- Cowlitz
- State
- Washington
- Country
- United States
Place with ZIP code 98611
| Place | County | Location |
|---|---|---|
| Castle Rock | Cowlitz | 46.278, -122.914 |
Near Portland
The nearest major city is Portland, about 86 km away.
Nearby ZIP codes
Frequently asked questions
Which places use ZIP code 98611?
Castle Rock.
Which county and state is 98611 in?
Cowlitz, Washington, United States.
What is the nearest major city to 98611?
Portland, about 86 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.