Rock Island, WA zip code
Rock Island, Washington uses one zip code: 98850. Most of it is in Douglas County. Together these zip codes are home to about 2K people.
Zip codes
1
Population
2K
All zips combined
Largest zip
98850
2,032 residents
Zip codes in Rock Island
| Zip | Type | Population | IncomeMedian income |
|---|---|---|---|
| 98850 | 2,032 | $83,125 |