Thornton ZIP code, Washington
The ZIP code for Thornton, WA is 99176, and its area code is 509.
- USPS city name
- 1 ZIP code
- Population
- 163
- Area code
- 509
- County
- Whitman County
- State
- Washington
NANPA lists no telephone rate centre for Thornton itself, so these are the area codes of the nearest one, Oakesdale (8.6 miles). A town on an area-code boundary can differ from its neighbour.
ZIP codes addressed as Thornton
| ZIP | City | Type | Population | Median income | Median home |
|---|---|---|---|---|---|
99176 | Thornton , WA | Standard | 163 | $128,000 | $283,300 |
Map of Thornton ZIP codes
The ZIP codes of Thornton, WA, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.
Towns near Thornton
The nearest larger towns are Oakesdale (396 people, 8.2 mi), St. John (607 people, 8.3 mi) and Rosalia (513 people, 10 mi).
| Town | Population | Distance |
|---|---|---|
| Colfax | 2,708 | 12.8 mi |
| Pullman | 32,229 | 27.4 mi |
| Cheney | 12,804 | 28.7 mi |
More nearby: every ZIP code in Whitman County · Washington ZIP codes
Cite this page
zipcodes.pro. “Thornton, WA ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/wa/thornton
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