📍 View location on OpenStreetMap (46.269370, -117.879560)
| Data Metric | Local Statistic |
|---|---|
| Postal / Zip Code | 99328 |
| Primary City | Dayton |
| State / Province | WA |
| County | Columbia |
| Total Population | 3,646 |
| Population Density | 2.1 people/sq mi |
| Timezone | America/Los_Angeles |
| Metric | ZIP 99328 | Columbia County records | WA records |
|---|---|---|---|
| Population estimate | 3,646 | 3,740 (sum) | 7,816,021 (sum) |
| Population Density | 2.1 /sq mi | -- | -- |
| County population rank | #1 of 2 | -- | -- |
| State population rank | #322 of 597 | -- | -- |
Regional sums combine the population estimates in the listed ZIP records; they are not official county or state population totals.
| ZIP Code | City | Distance | Population estimate |
|---|---|---|---|
| ZIP 99361 | Waitsburg | 12.8 mi | 1,992 |
| ZIP 99329 | Dixie | 15.6 mi | 127 |
| ZIP 99347 | Pomeroy | 18.2 mi | 2,512 |
| ZIP 99359 | Starbuck | 22.5 mi | 94 |
| ZIP 99362 | Walla Walla | 24.2 mi | 42,853 |
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 →