Castle Rock zip code
Zip code in Castle Rock, WA
The location Castle Rock belongs to Cowlitz County, state of Washington. Castle Rock has been assigned with the zip code 98611.
Castle Rock is the official name of the location so if you want to use the US Postal Service you must use that name.
| Zip code | Type | Population |
|---|---|---|
| 98611 | STANDARD | 9,210 |
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