Columbia County, Washington ZIP Codes

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ZIP Codes in Columbia County with Associated Cities & Towns

Columbia County, WA - Standard ZIP Codes

Columbia County, WA - PO Box ZIP Codes (NO DEMOGRAPHIC DATA)

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.

Map of Columbia County, WA ZIP Codes With Actual (Default) City Names

Dayton
Starbuck

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Columbia County, Washington ZIP Codes

ZIP Codes in Columbia County with Associated Cities & Towns

Map of Columbia County, WA ZIP Codes With Actual (Default) City Names

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