Clarkston, WA ZIP code
The ZIP code for Clarkston, Washington is 99403. It is in Asotin County.
- Population in these ZIPs
- 20,760
- Avg. median income
- $71,500population-weighted
- Typical home value
- $343,400population-weighted
- Metro area
- Lewiston, ID-WA
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Clarkston, WA ZIP code list
| ZIP code | Population | Median income | Typical home value |
|---|---|---|---|
| 99403 | 20,760 | $71,482 | $343,400 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities near Clarkston
Frequently asked questions
What is the ZIP code for Clarkston, WA?
The ZIP code for Clarkston, WA is 99403.
What county is Clarkston, Washington in?
Clarkston ZIP codes are in Asotin County.