Columbia County, Washington ZIP Codes

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ZIP Codes in Columbia County with Associated Cities & Towns

Columbia County, WA - Standard ZIP Codes
99328 | 99347 | 99361
Columbia County, WA - PO Box ZIP Codes (NO DEMOGRAPHIC DATA)
99359
Note: Every ZIP Code has a single ACTUAL City Name assigned by the US Postal Service (USPS).
See the specific ZIP Code for acceptable Alternate City Names and spelling variations.
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Map of Columbia County, WA ZIP Codes With Actual (Default) City Names

Dayton
Starbuck

NOTE: LARGE COMPLEX ZIP CODE MAPS CAN BE SLOW LOADING!

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