| ZIP Code | 99328 |
|---|---|
| City | Dayton |
| State | Washington (WA) |
| County | Columbia County |
| Area Code | 509 |
| Elevation | 2,869 ft |
| Latitude | 46.275681 |
|---|---|
| Longitude | -117.870851 |
| Timezone | Los Angeles (DST) |
| FIPS | 53013 |
| ZIP Type | Standard |
| Status | Active |
Race & Ethnicity
Age Breakdown
Key Indicators
| Median Age | 52.2 yrs ↑ 11% since 2019 |
|---|---|
| Avg Household Size | 2.08 |
| Below Poverty | 9.2% ▼ 9% below avg |
| College Grads | 40.8% ≈ Avg |
| Unemployment | 3.7% ▼ 25% below avg |
| No HS Diploma | 43 (1.7%) |
| HS Graduate | 568 (22.6%) |
| Some College | 444 (17.6%) |
| Associates | 435 (17.3%) |
| Bachelors | 384 (15.3%) |
| Graduate Degree | 643 (25.5%) |
Education
Housing Tenure
Home Value Distribution
Financials
| Median HH Income | $72,233 ≈ Avg ↑ 31% since 2019 |
|---|---|
| Median Home Value | $252,200 ▼ 10% below avg ↑ 39% since 2019 |
| Home/Income Ratio | 3.5x (nat avg ~3.5x) |
| Median Rent | $937/mo ↑ 20% since 2019 |
| Total Units | 1,967 |
| Vacant Units | 275 |
| Avg HH Size | 2.08 |
Income Distribution
How People Get to Work
Commute Time
Year Built
Summary
| Total Units | 1,967 |
|---|---|
| Vacant | 275 |
| Owner Occupied | 78.7% |
| Renter Occupied | 21.3% |
| Avg HH Size | 2.08 |
ZIP code 99328 is located in Dayton, Washington, within Columbia County. With a population of 3,595, this is a sparsely populated ZIP code with a mature community — the median age is 52.2 years. Economically, 99328 is a solidly middle-class ZIP code: the median household income of $72,233 is near the national average.
Real estate in ZIP code 99328 represents a mid-range housing market. The median home value of $252,200 is near the national average. Renters can expect to pay around $937 per month in median rent. Homeownership is strong here — 78.7% of occupied units are owner-occupied, suggesting an established, stable residential community. Median home values have increased by 39% since 2019.
The population of 99328 is primarily White (80.53%). Residents are well-educated — 40.8% hold a bachelor's degree or higher, which is near the national average. Poverty affects a relatively small share of residents at 9.2%. Household income has grown by 31% since 2019.
The unemployment rate in 99328 stands at 3.7%, which is below the national average. As in most parts of the country, driving alone is the dominant commute mode at 77%.
Overall, ZIP code 99328 in Dayton, WA is characterized as solidly middle-class, well-educated, a mature community, and predominantly owner-occupied. With 3,595 residents, a median household income of $72,233, and a median home value of $252,200, it offers a clear picture of life in this part of Washington.