Dayton, WA zip code
Dayton, Washington uses one zip code: 99328. Most of it is in Columbia County. Together these zip codes are home to about 3.6K people.
Zip codes
1
Population
3.6K
All zips combined
Largest zip
99328
3,646 residents
Zip codes in Dayton
| Zip | Type | Population | IncomeMedian income |
|---|---|---|---|
| 99328 | 3,646 | $72,756 |