Western Washington is a region of the United States defined as the area of Washington State west of the Cascade Mountains. This region is home to the state's largest city, Seattle, the state capital, Olympia, and most of the state's residents. The climate is generally far more damp and temperate than that of Eastern Washington.

Climate

Western Washington is known as having a far wetter climate than the eastern portion of the state, primarily due to the effects of the Cascades' rain shadow. The average location in Eastern Washington only receives an average of of precipitation per year,https://www.wrcc.dri.edu/summary/Climsmwa.html Western Regional Climate Data Center Website whereas the average place in Western Washington receives . The average location in Western Washington gets 168 days of measurable precipitation per year.https://www.wrcc.dri.edu/htmlfiles/wa/wa.01.html Western Regional Climate Data Center, Days of Precipitation

The place that receives the most recorded precipitation is Lake Quinault on the Olympic Peninsula, with an average of per year. The Long Beach Experimental Station has the most days of measurable precipitation, averaging 215 each year.

Population As of the 2020 census, Western Washington was home to 6,037,688 of the state's total 7,705,281 residents, making its population comparable to that of Missouri.See List of U.S. states and territories by population for the most recent state population figures. The region has a land area of , making its land area comparable to that of West Virginia. The population density of Western Washington is .

Counties Counties in Western Washington:

Clallam Clark Cowlitz Grays Harbor Island Jefferson King Kitsap Lewis Mason Pacific Pierce San Juan Skagit Skamania Snohomish Thurston Wahkiakum Whatcom

Cities of note Major cities in Western Washington:

Aberdeen Anacortes Auburn Bellevue Bellingham Bremerton Everett Edmonds Federal Way Issaquah Kelso Kirkland Lake Stevens Longview Lynnwood Monroe Mount Vernon Oak Harbor Olympia Port Angeles Port Townsend Puyallup Redmond Renton Seattle Shelton Tacoma Vancouver

References