Thornton, WA ZIP code
The ZIP code for Thornton, Washington is 99176. It is in Whitman County.
- Population in these ZIPs
- 163
- Avg. median income
- $128,000population-weighted
- Typical home value
- $283,300population-weighted
- Metro area
- Pullman, WA
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Thornton, WA ZIP code list
| ZIP code | Population | Median income | Typical home value |
|---|---|---|---|
| 99176 | 163 | $128,000 | $283,300 |
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 Thornton
Frequently asked questions
What is the ZIP code for Thornton, WA?
The ZIP code for Thornton, WA is 99176.
What county is Thornton, Washington in?
Thornton ZIP codes are in Whitman County.