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Wahkiakum County is a county located in the U.S. state of Washington. As of the 2010 census, the population was 3,978, making it the second-least populous county in Washington. The county seat and only incorporated town is Cathlamet.

History[]

The county was formed out of Cowlitz County on April 25, 1854 and is named for Chief Wahkiakum ("Tall Timber") of the Chinook.

Geography[]

According to the U.S. Census Bureau, the county has a total area of 287 square miles (740 km2), of which 263 square miles (680 km2) is land and 24 square miles (62 km2) (8.3%) is water. It is the smallest county of Washington by total area and the third-smallest by land area, ahead of San Juan County and Island County, which are mostly water by area.

Communities[]

Town[]

Census-designated places[]

  • Altoona
  • Deep River
  • East Cathlamet
  • Grays River
  • Lower Elochoman
  • Puget Island
  • Rosburg
  • Skamokawa Valley
  • Upper Elochoman

Unincorporated communities[]

  • Brookfield
  • Eagle Cliff
  • Flandersville
  • Skamokawa
  • Waterford
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