Steptoe, WA zip code
Steptoe, Washington uses one zip code: 99174. Most of it is in Whitman County. Together these zip codes are home to about 69 people.
Zip codes
1
Population
69
All zips combined
Largest zip
99174
69 residents
Zip codes in Steptoe
| Zip | Type | Population | IncomeMedian income |
|---|---|---|---|
| 99174 | 69 | $50,179 |