Zip Code 99171 — Saint John, WA
99171 is a ZIP Code associated with Saint John, WA, located within Whitman. 99171 ranks #5 out of 20 ZIP codes in Whitman County by population (and #437 out of 605 in WA). The area supports an estimated population of 895 residents across Data Pending housing units, with a population density of 1.4 people per square mile.
WorldPlaceData database updated: October 2026
📍 View location on OpenStreetMap (47.104850, -117.649500)
| Data Metric | Local Statistic |
|---|
| Postal / Zip Code | 99171 |
| Primary City | Saint John |
| State / Province | WA |
| County | Whitman |
| Total Population | 895 |
| Median Household Income | Data Pending |
| Total Housing Units | Data Pending |
| Population Density | 1.4 people/sq mi |
| Timezone | America/Los_Angeles |
How 99171 Compares
| Metric | ZIP 99171 | Whitman County | WA State Average |
|---|
| Population | 895 | 47,284 (Total) | 7,816,021 (Total) |
| Average ZIP Income | Data Pending | N/A | N/A |
| Population Density | 1.4 /sq mi | -- | -- |
| County Pop Rank | #5 of 20 | -- | -- |
Nearby ZIP Codes
Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →