ZIP code 99328
Where is ZIP code 99328?
Dayton, Washington
Columbia County · Standard ZIP code
ZIP code 99328 belongs to Dayton, Washington in Columbia County. 99328 is a standard ZIP code, so it covers street addresses as well as PO Boxes. It is in the Pacific Time zone and uses area codes 458, 509 and 541. About 3,646 people live in the 99328 area, where the median household income is $72,756. The closest ZIP codes are 99361 (Waitsburg, 8.6 mi west), 99329 (Dixie, 14.4 mi southwest) and 99359 (Starbuck, 15.5 mi northwest).
| ZIP code | 99328 |
|---|---|
| Type | Standard ZIP code for street addresses and PO Boxes |
| Status | Active |
| City | Dayton |
| State | Washington (WA) |
| County | Columbia County |
| Time zone | Pacific Time · now |
| Area codes | 458, 509, 541 |
| Coordinates | 46.3075, -117.9738 map |
| 3-digit prefix | 993 |
Population and income in 99328
| Population | 3,646 · lower than 54% of Washington ZIP codes |
|---|---|
| People per square mile | 6 · lower than 84% of Washington ZIP codes |
| Median age | 49.3 years · higher than 75% of Washington ZIP codes |
| Men / women | 50% / 50% |
| Median household income | $72,756 · lower than 67% of Washington ZIP codes |
| Income per person | $40,778 |
| Below the poverty line | 9.6% |
| Bachelor’s degree or higher | 24% of adults 25+ |
| Median home value | $272,100 · lower than 84% of Washington ZIP codes |
| Median rent | $982 a month |
| Housing units | 1,977 |
| Households | 1,667 (2.15 people on average) |
| Owners / renters | 77% / 23% |
| Land area | 657.29 sq mi (plus 3.45 sq mi of water) |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 99328. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 99328
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 99361 | Waitsburg, WA | 8.6 mi W | Standard |
| 99329 | Dixie, WA | 14.4 mi SW | Standard |
| 99359 | Starbuck, WA | 15.5 mi NW | PO Box only |
| 99348 | Prescott, WA | 21 mi W | Standard |
| 99347 | Pomeroy, WA | 21.1 mi NE | Standard |
| 99362 | Walla Walla, WA | 24.1 mi SW | Standard |
| 99136 | Hay, WA | 27 mi N | Standard |
| 99143 | Lacrosse, WA | 27.4 mi N | Standard |
| 99324 | College Place, WA | 27.5 mi SW | Standard |
| 97862 | Milton Freewater, OR | 31.9 mi SW | Standard |
| 99333 | Hooper, WA | 32 mi N | PO Box only |
| 99360 | Touchet, WA | 36.2 mi SW | Standard |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 99328 or measure the distance to another ZIP code.
How to address mail to 99328
123 MAIN ST
DAYTON WA 99328
Put the city, the two-letter state code and the ZIP code on the last line. Adding the 4-digit ZIP+4 code (99328-XXXX) helps mail sort faster but isn’t required.
Questions
- What city is ZIP code 99328?
- 99328 is a Dayton, Washington ZIP code.
- What county is 99328 in?
- ZIP code 99328 is in Columbia County, Washington.
- What time zone is ZIP code 99328 in?
- 99328 is in the Pacific Time zone (America/Los_Angeles).
- What area code is 99328?
- Phone numbers in ZIP code 99328 use area codes 458, 509 and 541.
- What is the population of ZIP code 99328?
- About 3,646 people live in ZIP code 99328, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 99328?
- The median household income in 99328 is $72,756 a year, lower than 67% of Washington ZIP codes.
- What ZIP codes are near 99328?
- The nearest ZIP codes to 99328 are 99361 (Waitsburg, 8.6 miles), 99329 (Dixie, 14.4 miles), 99359 (Starbuck, 15.5 miles) and 99348 (Prescott, 21 miles).