Steptoe ZIP code, Washington
The ZIP code for Steptoe, WA is 99174, and its area code is 509.
- USPS city name
- 1 ZIP code
- Overlapping the city
- 1 more
- Population
- 162
- Area code
- 509
- County
- Whitman County
- State
- Washington
NANPA lists no telephone rate centre for Steptoe itself, so these are the area codes of the nearest one, Garfield (8.1 miles). A town on an area-code boundary can differ from its neighbour.
Mail addressed to Steptoe uses the ZIP code above. 1 more ZIP code covers part of the city but is addressed as somewhere else; they are listed separately below.
ZIP codes addressed as Steptoe
| ZIP | City | Type | Population | Median income | Median home |
|---|---|---|---|---|---|
99174 | Steptoe , WA | Standard | 69 | $50,179 | $254,500 |
Other ZIP codes overlapping Steptoe
These ZIP codes cover part of Steptoe but are addressed as somewhere else.
| ZIP | City | Type | Population | Median income | Median home |
|---|---|---|---|---|---|
99111 | Colfax , WA | Standard | 4,038 | $73,393 | $295,800 |
Map of Steptoe ZIP codes
The ZIP codes of Steptoe, 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 Steptoe
The nearest larger towns are Colfax (2,708 people, 6.3 mi), Oakesdale (396 people, 9.8 mi) and Garfield (475 people, 9.9 mi).
| Town | Population | Distance |
|---|---|---|
| Colfax | 2,708 | 6.3 mi |
| Pullman | 32,229 | 20.8 mi |
| Moscow, ID | 26,286 | 25.3 mi |
More nearby: every ZIP code in Whitman County · Washington ZIP codes
Cite this page
zipcodes.pro. “Steptoe, WA ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/wa/steptoe
Underlying data is public domain or openly licensed — sources, vintages and licences.