Every ZIP code in Wahkiakum County

986xx

The complete list of Wahkiakum County, WA ZIP codes with the city each one delivers to.
ZIP code	City
98612	Cathlamet
98621	Grays River
98643	Rosburg
98647	Skamokawa

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP. USPS delivery-type products are licensed, and no clean-rights source maps ZIP codes to neighbourhoods — so the Wahkiakum County codes above are listed without a column we would have to invent.

Cities and towns in Wahkiakum County

A further 3 places in Wahkiakum County appear in the postal source without a page of its own; their codes are in the table above and each one links to its own page.

Area codes covering Wahkiakum County

Telephone and postal boundaries are drawn by different bodies, so these codes overlap the county without matching its edges.

Where Wahkiakum County's ZIP codes sit

Each point is the reference point of one Wahkiakum County ZIP code, plotted from its record coordinates. The outline is the convex envelope of those points — a footprint, not a boundary.

Reference points and footprint
Not an official NANPA boundary
Not a USPS delivery area

Scope every ZIP code recorded in Wahkiakum County. Source GeoNames US postal codes (2026-07 postal dump), Census 2024 county Gazetteer (2024 Gazetteer) and geoinfo-dataset (full_dataset) ZIP→NPA (2018 snapshot). Updated 16 July 2026. The outline is a convex envelope of ZIP reference points, not a jurisdiction boundary.