ZIP code 99328: Dayton, WA
99328 is a ZIP code in Dayton, Washington, mainly in Columbia County. About 3,646 people live here.
- Population
- 3,646
- Median household income
- $72,756
- Typical home value
- $273,500+1.5% in 12 months
- Median rent
- $982gross, per month
- Median age
- 49.3
- Homeowners
- 77.4%of occupied homes
Shaded: ZIP code 99328's area. Click anywhere on the map to see which ZIP code it's in.
ZIP codes within 10 milesWithin 25 miles
ZIP code 99328 details
| City | Dayton |
|---|---|
| State | Washington |
| County | Columbia County |
| Metro area | Not in a metro or micro area |
| Time zone | Pacific Time (UTC−8), observes daylight saving time |
| Type | Standard (delivery area) |
| Land area | 657.3 sq mi, plus 3.5 sq mi of water |
| Population density | 6 people per sq mi |
| Bachelor's degree or higher | 24% of adults 25+ |
| Average commute | 21.4 minutes |
| Center coordinates | 46.27568, -117.87085 |
Median rent in 99328 by bedrooms
| Size | Median gross rent |
|---|---|
| 1 bedroom | $928/mo |
| 2 bedrooms | $964/mo |
| 3 bedrooms | $1,035/mo |
Gross rent includes utilities paid by the tenant. ACS 2020–2024; sizes with too few rentals to estimate are left out.
ZIP codes near 99328
| ZIP code | City | Distance | Population |
|---|---|---|---|
| 99361 | Waitsburg, WA | 13.3 mi | 1,992 |
| 99329 | Dixie, WA | 16.2 mi | 127 |
| 99347 | Pomeroy, WA | 17.4 mi | 2,512 |
| 99359 | Starbuck, WA | 21.5 mi | 94 |
| 99362 | Walla Walla, WA | 24.4 mi | 42,853 |
| 99402 | Asotin, WA | 25.1 mi | 1,557 |
| 99136 | Hay, WA | 27.8 mi | 14 |
| 99348 | Prescott, WA | 28.3 mi | 1,633 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Buying a home in 99328?
A typical home in ZIP code 99328 is worth about $273,500 (Zillow Home Value Index). The median household here earns $72,756 a year. See what buying here would cost per month, with Washington average taxes and insurance filled in.
Monthly payment for a $273,500 homeWhat can a $72,756 income afford?Rental property numbers
About ZIP code 99328
What city is ZIP code 99328?
ZIP code 99328 is in Dayton, WA, in Columbia County.
What county is ZIP code 99328 in?
99328 is mainly in Columbia County, Washington.
What is the population of ZIP code 99328?
About 3,646 people live in ZIP code 99328, according to the American Community Survey 2020–2024 5-year estimates.
What time zone is ZIP code 99328 in?
99328 is in Pacific Time (UTC−8). It observes daylight saving time.