Castle Rock, WA zip code
Castle Rock, Washington uses one zip code: 98611. Most of it is in Cowlitz County. Together these zip codes are home to about 9.3K people.
Zip codes
1
Population
9.3K
All zips combined
Largest zip
98611
9,302 residents
Zip codes in Castle Rock
| Zip | Type | Population | IncomeMedian income |
|---|---|---|---|
| 98611 | 9,302 | $86,322 |