Columbia County, Washington ZIP codes
2ZIP codes
2Cities and towns
3,740People in ZIP areas
458, 509, 541Area codes
Columbia County is in Washington and the Pacific Time zone. ZIP codes don’t follow county lines exactly, so a ZIP code listed here can reach into a neighboring county.
All ZIP codes in Columbia County
| ZIP code | City | Type | Population | Median income |
|---|---|---|---|---|
| 99328 | Dayton | Standard | 3,646 | $72,756 |
| 99359 | Starbuck | PO Box only | 94 | $61,000 |
Cities and towns in Columbia County
Area codes in Columbia County
Questions
- How many ZIP codes are in Columbia County, WA?
- Columbia County has 2 ZIP codes, 1 of them standard ZIP codes for street addresses.
- What cities are in Columbia County?
- Columbia County ZIP codes cover Dayton and Starbuck.
- What area code is Columbia County, WA?
- Columbia County uses area codes 458, 509 and 541.
- What time zone is Columbia County in?
- Columbia County is in Pacific Time.
Other Washington counties
- Adams County
- Asotin County
- Benton County
- Chelan County
- Clallam County
- Clark County
- Cowlitz County
- Douglas County
- Ferry County
- Franklin County
- Garfield County
- Grant County
- Grays Harbor County
- Island County
- Jefferson County
- King County
- Kitsap County
- Kittitas County
- Klickitat County
- Lewis County
- Lincoln County
- Mason County
- Okanogan County
- Pacific County
- Pend Oreille County
- Pierce County
- San Juan County
- Skagit County
- Skamania County
- Snohomish County
- Spokane County
- Stevens County
- Thurston County
- Wahkiakum County
- Walla Walla County
- Whatcom County
- Whitman County
- Yakima County