There are 4 zip codes in Wahkiakum County, Washington. The most populated is 98612, located in Cathlamet. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
986123,283Cathlamet
98643482Rosburg
98647272Skamokawa
98621257Grays River
showing: 4 rows

Zip Codes in Wahkiakum County, Washington by Population (2024)