Western Washington is a

region of the United States This is a list of some of the ways ''regions'' is defined in the United States. Many regions are defined in law or regulations by the federal government; others by shared culture and history, and others by economic factors. Interstate regions C ...

defined as the area of

Washington state Washington (), officially the State of Washington, is a state in the Pacific Northwest region of the Western United States. Named for George Washington—the first U.S. president—the state was formed from the western part of the Washington ...

west of the

Cascade Mountains The Cascade Range or Cascades is a major mountain range of western North America, extending from southern British Columbia through Washington and Oregon to Northern California. It includes both non-volcanic mountains, such as the North Cascades, ...

. This region is home to the state's largest city,

Seattle Seattle ( ) is a seaport city on the West Coast of the United States. It is the seat of King County, Washington. With a 2020 population of 737,015, it is the largest city in both the state of Washington and the Pacific Northwest regio ...

, the state capital,

Olympia The name Olympia may refer to: Arts and entertainment Film * ''Olympia'' (1938 film), by Leni Riefenstahl, documenting the Berlin-hosted Olympic Games * ''Olympia'' (1998 film), about a Mexican soap opera star who pursues a career as an athlet ...

, and most of the state's residents. The climate is generally far more damp and temperate than that of

Eastern Washington Eastern Washington is the region of the U.S. state of Washington located east of the Cascade Range. It contains the city of Spokane (the second largest city in the state), the Tri-Cities, the Columbia River and the Grand Coulee Dam, the Hanfor ...

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 A rain shadow is an area of significantly reduced rainfall behind a mountainous region, on the side facing away from prevailing winds, known as its leeward side. Evaporated moisture from water bodies (such as oceans and large lakes) is carrie ...

. The average location in Eastern Washington only receives an average of 46.87 centimeters (18.45 inches) of precipitation per year,http://www.wrcc.dri.edu/summary/Climsmwa.html Western Regional Climate Data Center Website whereas the average place in Western Washington receives 167.72 centimeters (66.03 inches). The average location in Western Washington gets 168 days of measurable precipitation per year.http://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 Lake Quinault ( or ) is a lake on the Olympic Peninsula in western Washington state. It is located in the glacial-carved Quinault Valley of the Quinault River, at the southern edge of Olympic National Park in the northwestern United States. One o ...

on the

Olympic Peninsula The Olympic Peninsula is a large arm of land in western Washington that lies across Puget Sound from Seattle, and contains Olympic National Park. It is bounded on the west by the Pacific Ocean, the north by the Strait of Juan de Fuca, and the ...

, with an average of 332.92 centimeters (131.07 inches) per year. The

Long Beach Long Beach is a city in Los Angeles County, California. It is the 42nd-most populous city in the United States, with a population of 466,742 as of 2020. A charter city, Long Beach is the seventh-most populous city in California. Incorporate ...

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 Missouri is a U.S. state, state in the Midwestern United States, Midwestern region of the United States. Ranking List of U.S. states and territories by area, 21st in land area, it is bordered by eight states (tied for the most with Tennessee ...

.See

List of U.S. states and territories by population The states and territories included in the United States Census Bureau's statistics for the United States (population, ethnicity, religion, and most other categories) include the 50 states and the District of Columbia ( Washington, D.C.). Sep ...

for the most recent state population figures. The region has a land area of , for a population density of 244.03 people per square mile (94.22 people per square kilometer).

Counties

Counties in Western Washington: *

Clallam Klallam (also Clallam, although the spelling with "K" is preferred in all four modern Klallam communities) refers to four related indigenous Native American/First Nations communities from the Pacific Northwest of North America. The Klallam cult ...

Clark Clark is an English language surname, ultimately derived from the Latin with historical links to England, Scotland, and Ireland ''clericus'' meaning "scribe", "secretary" or a scholar within a religious order, referring to someone who was educate ...

Cowlitz Cowlitz may refer to: People * Cowlitz people, an indigenous people of the Pacific Northwest ** Cowlitz language, member of the Tsamosan branch of the Coast Salish family of Salishan languages * Cowlitz Indian Tribe, a federally recognized tribe of ...

Grays Harbor Grays Harbor is an estuarine bay located north of the mouth of the Columbia River, on the southwest Pacific coast of Washington state, in the United States of America. It is a ria, which formed at the end of the last ice age, when sea levels flood ...

Island An island (or isle) is an isolated piece of habitat that is surrounded by a dramatically different habitat, such as water. Very small islands such as emergent land features on atolls can be called islets, skerries, cays or keys. An island ...

Jefferson Jefferson may refer to: Names * Jefferson (surname) * Jefferson (given name) People * Thomas Jefferson (1743–1826), third president of the United States * Jefferson (footballer, born 1970), full name Jefferson Tomaz de Souza, Brazilian foo ...

King King is the title given to a male monarch in a variety of contexts. The female equivalent is queen, which title is also given to the consort of a king. *In the context of prehistory, antiquity and contemporary indigenous peoples, the tit ...

* Kitsap *

Lewis Lewis may refer to: Names * Lewis (given name), including a list of people with the given name * Lewis (surname), including a list of people with the surname Music * Lewis (musician), Canadian singer * "Lewis (Mistreated)", a song by Radiohead ...

* Mason *

Pacific The Pacific Ocean is the largest and deepest of Earth's five oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean (or, depending on definition, to Antarctica) in the south, and is bounded by the continen ...

Pierce Pierce may refer to: Places Canada * Pierce Range, a mountain range on Vancouver Island, British Columbia United States * Pierce, Colorado * Pierce, Idaho * Pierce, Illinois * Pierce, Kentucky * Pierce, Nebraska * Pierce, Texas * Pierce, We ...

* San Juan * Skagit * Skamania * Snohomish * Thurston * Wahkiakum * Whatcom

Cities of note

Major cities in Western Washington: *

Aberdeen Aberdeen (; sco, Aiberdeen ; gd, Obar Dheathain ; la, Aberdonia) is a city in North East Scotland, and is the third most populous city in the country. Aberdeen is one of Scotland's 32 local government council areas (as Aberdeen City), and ...

* Auburn *

Bellevue Bellevue means "beautiful view" in French. It may refer to: Placenames Australia * Bellevue, Western Australia * Bellevue Hill, New South Wales * Bellevue, Queensland * Bellevue, Glebe, an historic house in Sydney, New South Wales Canada ...

* Bellingham *

Bremerton Bremerton is a city in Kitsap County, Washington. The population was 37,729 at the 2010 census and an estimated 41,405 in 2019, making it the largest city on the Kitsap Peninsula. Bremerton is home to Puget Sound Naval Shipyard and the Bremer ...

* Everett *

Edmonds Edmonds may refer to: * Edmonds (surname), a surname (including a list of people with the surname) * Edmonds, Washington, a city in Washington, US ** Edmonds station (Washington), a passenger train station in Washington, US * Edmonds station (SkyTr ...

Federal Way Federal Way is a city in King County, Washington, United States. One of the most recently incorporated cities in the county, its population was 101,030 at the 2020 census. Federal Way is the tenth-largest city in Washington and the fifth-larges ...

* Kelso *

Lake Stevens Lake Stevens is a city in Snohomish County, Washington, United States, that is named for the lake it surrounds. It is located east of Everett and borders the cities of Marysville to the northwest and Snohomish to the south. The city's popula ...

* Longview *

Lynnwood Lynnwood is a city in Snohomish County, Washington, United States. The city is part of the Seattle metropolitan area and is located north of Seattle and south of Everett, near the junction of Interstate 5 and Interstate 405. It is the four ...

Mount Vernon Mount Vernon is an American landmark and former plantation of Founding Father, commander of the Continental Army in the Revolutionary War, and the first president of the United States George Washington and his wife, Martha. The estate is on ...

Port Angeles Port Angeles ( ) is a city and county seat of Clallam County, Washington, United States. With a population of 19,960 as of the 2020 census, it is the largest city in the county. The population was estimated at 20,134 in 2021. The city's har ...

Port Townsend Port Townsend is a city on the Quimper Peninsula in Jefferson County, Washington, United States. The population was 10,148 at the 2020 United States Census. It is the county seat and only incorporated city of Jefferson County. In addition to ...

* Puyallup * Renton *

* Tacoma *

Vancouver Vancouver ( ) is a major city in western Canada, located in the Lower Mainland region of British Columbia. As the List of cities in British Columbia, most populous city in the province, the 2021 Canadian census recorded 662,248 people in the ...

References

{{Authority control Regions of Washington (state)