Clallam County

Location of Clallam County in Washington StateClallam County is located in the northern portion of Washington State’s Olympic Peninsula. It is bordered on the west by the Pacific Ocean and on the north by the Strait of Juan de Fuca.  Adjacent to Clallam County on the south and east is Jefferson County.  As of the 2010 U.S. Census, Clallam County had a total land area of 1,738.33 square miles and a population of 71,404. Port Angeles is its largest city with a population of 19,038. Also of interest:

  • The intersecting watershed sub-basins(4):  Hoh-Quillayute, Crescent-Hoko, Dungeness-Elwha and Hood Canal.
  • Major lakes:  Ozette Lake and Lake Crescent.
  • Major rivers:  Elwha River, Dungeness River, Soleduck River, Bogachiel River, Hoko River, Hoh River and Big River.
  • Gray Wolf Ridge (7,218 feet) is part of the Olympic Mountains and the highest point in Clallam County.
  • Located along the northern coast of the county is the Dungeness Spit which is the longest natural sand spit in the United States.  The Dungeness Spit offers a natural protections to an inner bay, tideflats, and an estuary which are part of the larger Dungeness National Wildlife Refuge.

U.S. Census Bureau QuickFacts for Clallam County, WA

Office of Financial Management (OFM) county data for Clallam County, WA


Report cover photo by Victor Mesny.

Climate change vulnerability and adaptation in the North Cascades Region, Washington

A 2014 report by the North Cascadia Adaptation Partnership identifies climate change issues relevant to resource management in the North Cascades, and recommends solutions that will facilitate the transition of the diverse ecosystems of this region into a warmer climate.

Photograph of sediment-covered rocks in the lower Elwha River just upstream of the river mouth at the Strait of Juan de Fuca (June 20, 2012, Chris Magirl).

Suspended-sediment concentrations during dam decommissioning in the Elwha River, Washington

This document was prepared by the U.S. Geological Survey in cooperation with the U.S. Environmental Protection Agency and the National Park Service. Download the entire report, or read the Introduction below. Portions of this document were originally published in June 2013 and were updated in February 2014. 


2010 Census Quick Facts for Clallam County, WA

Learn more about demographics in Clallam County, Washington. The U.S. Census Bureau published the following quick facts.