Farmington ZIP code, Washington
The ZIP code for Farmington, WA is 99128, and its area code is 509.
- USPS city name
- 1 ZIP code
- Population
- 140
- Area code
- 509
- County
- Whitman County
- State
- Washington
ZIP codes addressed as Farmington
| ZIP | City | Type | Population | Median income | Median home |
|---|---|---|---|---|---|
99128 | Farmington , WA | Standard | 259 | $58,942 | $363,500 |
Map of Farmington ZIP codes
The ZIP codes of Farmington, 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 Farmington
The nearest larger towns are Garfield (475 people, 7.0 mi), Tekoa (690 people, 9.5 mi) and Oakesdale (396 people, 9.8 mi).
| Town | Population | Distance |
|---|---|---|
| Colfax | 2,708 | 16.6 mi |
| Moscow, ID | 26,286 | 24.8 mi |
| Pullman | 32,229 | 25.2 mi |
| St. Maries, ID | 2,915 | 27.2 mi |
More nearby: every ZIP code in Whitman County · Washington ZIP codes
Cite this page
zipcodes.pro. “Farmington, WA ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/wa/farmington
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