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zipcodes.pro — STATE/WA/COUNTY/WAHKIAKUM

Wahkiakum County, WA ZIP codes

Wahkiakum County, WA has 3 ZIP codes, in 3 towns: 98612, 98647 and 98643. 2 more cross into it from a neighbouring county: 98638 and 98621.

The county seat is Cathlamet.

ZIP codes
3
Partly in it
2 more
Towns
3
County seat
Cathlamet
County FIPS
53069
Population
4,658
Median household income
$62,653
Land area
263 sq mi

Wahkiakum County ZIP codes by town

Cathlamet (county seat)
98612

Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.

ZIP codes partly in Wahkiakum County

These ZIP codes lie mostly in a neighbouring county but each cover a twentieth or more of Wahkiakum County.

Map of Wahkiakum County ZIP codes

986129864398647

The ZIP codes of Wahkiakum County, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Wahkiakum County in numbers

About 4,658 people live in Wahkiakum County, in 2,100 households, the 37th most populous of Washington's 39 counties. The median household income is $62,653 a year, 36% below the Washington median of $98,141 (US: $80,734). The median owner-occupied home is valued at $396,800 (30% below the Washington median), and median gross rent is $853 a month. The median age is 54.5; 21.8% of adults 25 and over hold a bachelor's degree or higher (39.6% across Washington); the average commute takes 34 minutes.

Population4,658Wahkiakum4,658
Households2,100Wahkiakum2,100
Median age54.5Wahkiakum54.5Washington38.3US 38.9
Median household income$62,653Wahkiakum$62,653Washington$98,141US $80,734
Median home value$396,800Wahkiakum$396,800Washington$564,600US $332,700
Median gross rent$853Wahkiakum$853Washington$1,760US $1,413
Bachelor's degree or higher21.8%Wahkiakum21.8%Washington39.6%US 35.7%
Mean commute33.9 minWahkiakum33.9 minWashington26.6 minUS 26.4 min
Population density18 / sq miWahkiakum18 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates. Survey estimates carry margins of error, wider for small places. Sources and methods.

Largest towns in Wahkiakum County

Largest towns in Wahkiakum County
TownZIP codesPopulation
Cathlamet 1 616
Rosburg 1 528
Skamokawa 1 352

Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.

Neighbouring counties

Counties that share a ZIP code with Wahkiakum County.

Not sure you are in Wahkiakum County? What county am I in? answers from your location, near a county line included.

Every ZIP code in Wahkiakum County, with figures

ZIP codes in Wahkiakum County
ZIP City Type Population Median income Median home
98612 Cathlamet , WA Standard 3,366 $59,583 $429,600
98643 Rosburg , WA Standard 571 — $237,100
98647 Skamokawa , WA Standard 352 — $259,200

Cite this page

zipcodes.pro. “Wahkiakum County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/wa/county/wahkiakum

Underlying data is public domain or openly licensed — sources, vintages and licences.