Snohomish County, Washington facts for kids

Quick facts for kids Snohomish County
U.S. county
Aerial view of the Snohomish River delta, including portions of Everett, Lake Stevens, and Marysville
Flag Seal
Location within the U.S. state of Washington
Washington's location within the U.S.
Country	United States
State	Washington
Founded	January 14, 1861
Named for	the Snohomish people
Seat	Everett
Largest city	Everett
Area
• Total	2,196 sq mi (5,690 km2)
• Land	2,087 sq mi (5,410 km2)
• Water	109 sq mi (280 km2)  5.0%
Population  (2020)
• Total	827,957
• Estimate  (2023)	844,761
• Density	384/sq mi (148/km2)
Time zone	UTC−8 (Pacific)
• Summer (DST)	UTC−7 (PDT)
Area code	206, 360, 425, 564
Congressional districts	1st, 2nd, 8th

Snohomish County (/snoʊˈhoʊmɪʃ/) is a county located in the U.S. state of Washington. With a population of 827,957 as of the 2020 census, it is the third-most populous county in Washington, after nearby King and Pierce counties, and the 72nd-most populous in the United States. The county seat and largest city is Everett. The county forms part of the Seattle metropolitan area, which also includes King and Pierce counties to the south.

The county's western portion, facing Puget Sound and other inland waters of the Salish Sea, is home to the majority of its population and major cities. The eastern portion is rugged and includes portions of the Cascade Range, with few settlements along major rivers and most of it designated as part of Mount Baker–Snoqualmie National Forest. Snohomish County is bound to the north by Skagit County, to the east by Chelan County, to the south by King County, and to the west by Kitsap and Island counties.

Snohomish County was created out of Island County on January 14, 1861, and is named for the indigenous Snohomish people. It includes the Tulalip Indian Reservation, which was established by the 1855 Point Elliott Treaty, which relocated several indigenous Coast Salish groups to the reservation. The county seat was originally at the city of Snohomish until an 1897 election moved it to Everett. Since the mid-20th century, areas of Snohomish County have developed into an aerospace manufacturing center, largely due to the presence of Boeing in Everett, as well as bedroom communities for workers in Seattle.

Snohomish County now has 18 incorporated cities and 2 towns with their own local governments, in addition to developed unincorporated areas. It is connected to nearby areas by roads (including Interstate 5), railways, and transit systems. The county government is led by a five-member county council and chief executive elected by voters to four-year terms.

Etymology

"Snohomish" comes from the name of the largest Native American tribe in the area when settlers arrived in the 19th century. The name is spelled Sduhubš (Sdoh-doh-hohbsh) in the Lushootseed language and has a disputed meaning with unclear origins. Indian agent Dr. Charles M. Buchanan, who spent 21 years with the Tulalips, once said that he had "never met an Indian who could give a meaning to the word Snohomish". Chief William Shelton, the last hereditary tribal chief of the Snohomish tribe, claimed that it meant "lowland people", a name associated with the tribe's location on the waters of the Puget Sound; other scholars have claimed "a style of union among them", "the braves", or "Sleeping Waters".

The name is also used for the Snohomish River, which runs through part of the county, and the City of Snohomish, the former county seat that was renamed after the formation of the county. The current spelling of the name was adopted by the Surveyor General of Washington Territory in 1857, with earlier documents and accounts using alternative spellings. John Work of the Hudson's Bay Company recorded the name "Sinnahmis" in 1824, while the Wilkes Expedition of 1841 used "Tuxpam" to describe the Snohomish River. The same river was named "Sinahomis" by Captain Henry Kellett in 1847, and was accepted by the U.S. government for several years.

History

Canoes with settlers and Native Americans at Mukilteo Beach, c. 1861–62

Snohomish County was originally inhabited by several Coast Salish groups, predominantly settled along the western coastline and near the region's rivers. The Snohomish were the largest group and occupied an area from present-day Warm Beach to Shoreline, while Stillaguamish lived in the Stillaguamish River basin. The region was first charted and named by European explorers in the late 18th century, beginning with Captain George Vancouver and his British expedition. Vancouver arrived in Puget Sound and Port Gardner Bay on June 4, 1792, landing near present-day Everett.

The Treaty of Point Elliott was signed at present-day Mukilteo on January 22, 1855, marking the cession of Coast Salish territories in the Puget Sound lowlands. The Tulalip Indian Reservation was established to house the remaining tribes, including the Snohomish, Snoqualmie, and Skykomish. Snohomish County was created out of Island County's mainland areas and the northernmost portion of King County on January 14, 1861. The separation from Island County was the result of a petition by settlers to the territorial legislature that cited the difficulty of travel to Coupeville on Whidbey Island, the county seat at the time.

The new county was the first in Washington to have its boundaries defined by a land survey rather than natural boundaries. The territorial legislature designated Mukilteo, the area's largest settlement, as the temporary county seat in January 1861. The county government was permanently moved to Cadyville, later Snohomish, following an election on July 8. Residents north of the Snohomish River later proposed to be moved into Skagit County due to difficult travel to the county seat at Snohomish. After the incorporation of the city of Everett in 1893, the city's leaders attempted to move the county seat from Snohomish. A countywide general election on November 6, 1894, chose to relocate the county seat to Everett, amid controversy and allegations of illegal votes. After two years of litigation between the cities of Snohomish and Everett, the county seat was officially relocated to Everett in December 1896.

One of the first county censuses was taken in 1862 by Sheriff Salem A. Woods. Early important pioneers in the Snohomish County region included E. F. Cady of Snohomish, Emory C. Ferguson of Snohomish and Isaac Cathcart.

The early economy of Snohomish County relied on natural resources, namely timber and mining, alongside agriculture. The region was connected by railroads at the end of the 19th century, which also created new towns that experienced major population booms as emigrants arrived from other parts of the United States. The county was among the largest New Deal aid beneficiaries in Washington due to its troubled economy during the Great Depression; the Works Progress Administration built major projects around Snohomish County, while the Civilian Conservation Corps developed wilderness and recreational areas around several work camps.

During World War II, the county had several shipyards and airplane factories established to supply the United States Armed Forces. Several existing and new airfields were converted into military use, which would continue beyond the war. A post-war population boom brought new suburban development to Snohomish County, where bedroom communities were built alongside new highways to Seattle. In 1967, Boeing began construction of an aircraft assembly plant—the world's largest building—in Everett for its Boeing 747 program. The U.S. Navy located a major homeport in Everett that opened in 1994.

Geography

Map of Snohomish County, showing incorporated places and major highways

Snohomish County is part of the Puget Sound region of Western Washington, bordered to the south by King County, to the west by Puget Sound and other inland waters, to the north by Skagit County, and to the east by the Chelan County at the crest of the Cascade Range. According to the United States Census Bureau, the county has a total square area of approximately 2,196 square miles (5,690 km²), of which 2,087 square miles (5,410 km²) is land and 109 square miles (280 km²), or 5.0%, is water. It is the 13th largest county in Washington by land area and is larger than the states of Delaware and Rhode Island.

The county's surface is covered by plains and rolling hills in the west, where the majority of settlements are, and mountainous terrain in the east. The Cascade Range passes through the eastern part of the county and is largely protected from development as part of the Mount Baker–Snoqualmie National Forest. The mountain range includes the highest point in Snohomish County: Glacier Peak, at 10,541 feet (3,212.90 m) above sea level. Several major rivers originate in the Cascades and flow west towards Puget Sound and other parts of the Salish Sea, including the Stillaguamish and Snohomish (fed by the Skykomish and Snoqualmie rivers). These rivers form several valleys used for agriculture that occasionally flood during major weather events, such as atmospheric rivers.

Climate

The lowland areas of western Snohomish County generally has a temperate Mediterranean climate similar to the rest of the central Puget Sound region with dry summers and wet winters. The county's weather is heavily influenced by maritime systems, pushed by prevailing westerly winds but dampened by the Olympic Mountains. The mean monthly temperatures for the county range from 20 to 40 °F (−7 to 4 °C) during the winter and 55 to 65 °F (13 to 18 °C) in the summer. The record highest temperatures were set during a June 2021 heat wave, with highs of up to 109 °F (43 °C) recorded in several areas. Annual precipitation ranges from 35 inches (89 cm) in the west to 180 inches (460 cm) in the upper elevations of the Cascades; the majority of the region's precipitation falls between October and March. The county's lowlands also has an average annual snowfall ranging from 10 to 20 inches (25 to 51 cm). The Puget Sound Convergence Zone, a known meteorological phenomenon, runs through southwestern Snohomish County and causes narrow bands of precipitation.

Flora and fauna

Approximately 68 percent of land in Snohomish County is classified as forestland, which is predominantly located in the eastern portions. These forests are dominated by conifer species such as Douglas firs, hemlocks, and cedars, with pockets of deciduous species in logged areas.

Demographics

2020 census

As of the 2020 census, there were 827,957 people, 306,828 households, and 211,519 families residing in the county. The population density was 396.8 people per square mile (153.2 people/km²). There were 321,523 housing units at an average density of 146.4 units per square mile (56.5 units/km²). The racial makeup of the county was 66.1% white, 12.3% Asian, 3.54% black or African American, 1.3% Native American, 0.6% Pacific Islander, 5.4% other races, and 10.8% from two or more races. Those of Hispanic or Latino origin made up 11.6% of the population.

2010 census

As of the 2010 census, there were 713,335 people, 268,325 households, and 182,282 families residing in the county. The population density was 341.8 people per square mile (132.0 people/km²). There were 286,659 housing units at an average density of 137.3 units per square mile (53.0 units/km²). The racial makeup of the county was 78.4% white, 8.9% Asian, 2.5% black or African American, 1.4% Indigenous, 0.4% Pacific islander, 3.8% from other races, and 4.6% from two or more races. Those of Hispanic or Latino origin made up 9.0% of the population. In terms of ethnicity, 20.3% reported German ancestry, 12.6% Irish, 12.2% English, 8.2% Norwegian, and 3.6% American heritage.

Of the 268,325 households, 35.2% had children under the age of 18 living with them, 52.4% were married couples living together, 10.4% had a female householder with no husband present, 32.1% were non-families, and 24.3% of all households were made up of individuals. The average household size was 2.62 and the average family size was 3.12. The median age was 37.1 years.

The median income for a household in the county was $66,300 and the median income for a family was $77,479. Males had a median income of $56,152 versus $41,621 for females. The per capita income for the county was $30,635. About 5.9% of families and 8.4% of the population were below the poverty line, including 10.8% of those under age 18 and 7.3% of those age 65 or over.

Education

Snoqualmie Hall, a building shared by Edmonds College and Central Washington University, 2007

Snohomish County is one of the most-populous counties in the United States without a four-year, baccalaureate degree-granting institution.

Columbia College offers AA all the way up to a Master's in Business along with other Associate and bachelor's degrees. Everett Community College and Edmonds College provide academic transfer degrees, career training and basic education in Snohomish County. Together, the two serve more than 40,000 people annually. About 40 percent of all high school graduates in Snohomish County begin their college education at Edmonds or Everett community college.

Everett Community College is the legislatively appointed leader of the University Center of North Puget Sound, which offers 25 bachelor's and master's degrees through Western Washington University, Washington State University, Central Washington University, Eastern Washington University, The Evergreen State College, Hope International University, and the University of Washington Bothell.

Edmonds College and Central Washington University have worked together since 1975 to provide higher education in Snohomish County. After earning a two-year degree online or on campus from Edmonds College, students can continue their studies for a bachelor's degree from Central Washington University-Lynnwood in Snoqualmie Hall, a shared building on the Edmonds CC campus.

Media

Residents receive much of their information from Seattle-based media, the most prominent of which include The Seattle Times and regional TV news stations. The Everett Herald is the county's most popular daily newspaper, while weekly newspapers such as the Snohomish County Tribune, Stanwood Camano News and Edmonds Beacon serve their respective communities.

The county is part of the Seattle broadcast television market and is served by several regional television news stations, including KOMO, KING, KIRO, KCTS, and KCPQ.

Local radio stations based in the county include KKXA, KRKO, KSER, and KWYZ.

There are also smaller local publications, with significant online presences: My Edmonds News, My Everett News, The Mountlake Terrace News, News of Mill Creek, Mill Creek View, Lynnwood Today and Lynnwood Times.

The county has been used as a filming location for several movies and television series since the mid-20th century.

Transportation

Roads

Snohomish County has five major routes that connect the county to the other counties and other areas. There are three major north–south routes: Interstate 5, State Route 9, and State Route 99. The only complete east–west route is U.S. Route 2.

The countywide numbered street grid originates in Everett and was implemented beginning in the 1970s during the rollout of the 911 emergency phone number system. By the late 1990s, some roads had reverted to their historical names—either officially or by using commemorative signs—due to local backlash.

Public transportation

Snohomish County is served by several public transit systems that connect to each other at regional hubs, including Everett Station and Lynnwood Transit Center. The primary provider is Community Transit, which operates local service within the county (apart from the city of Everett) and commuter service to the Boeing Everett Factory and Downtown Seattle. Sound Transit, a regional transit agency, provides light rail, commuter rail, and express bus services that connect to regional destinations in Seattle and Bellevue. Other providers include Everett Transit, a municipal system serving the city of Everett; Island Transit, which connects Camano Island to Stanwood and Everett; and Skagit Transit, which operates an inter-county route from Everett to Mount Vernon.

The regional Link light rail system was extended into Snohomish County with the opening of the Lynnwood Link Extension on August 30, 2024, which includes stations in Mountlake Terrace and Lynnwood on the 1 Line. The project was approved in a 2008 ballot measure and began construction in 2019. An extension to Everett with six or seven stations was approved in the regional Sound Transit 3 ballot measure in 2016 and is expected to open between 2037 and 2041. Community Transit operates a bus rapid transit network called Swift with three lines as of 2024^[update]: the Blue Line, which opened in 2009 from Everett to Shoreline along State Route 99; the Green Line from the Boeing Everett Factory to Bothell via Airport Road and State Route 527; and the Orange Line in Lynnwood and Mill Creek, which opened in 2024. A fourth line, the Gold Line, is planned to open by 2029 and connect Everett to Marysville and Smokey Point.

Sound Transit also runs four daily Sounder commuter trains at peak hours between Everett Station and King Street Station in Seattle, stopping at Mukilteo and Edmonds. Intercity rail service is provided by Amtrak, which has two lines operating within Snohomish County: Amtrak Cascades between Seattle and Vancouver, British Columbia, stopping in Edmonds, Everett, and Stanwood station; and the Empire Builder between Seattle and Chicago, Illinois, stopping in Edmonds and Everett. Intercity bus service is provided by Greyhound Lines and Northwestern Trailways from Everett Station.

Airports

Snohomish County has one major airport: Paine Field, otherwise known as Snohomish County Airport, which has had passenger service since March 2019.

There are three smaller public airports that are open to general aviation: Arlington Municipal Airport in Arlington, Darrington Municipal Airport in Darrington, and Harvey Field in Snohomish. The county also has several private airports, including the Frontier Airpark and Green Valley Airfield in Granite Falls. The Martha Lake Airport in Martha Lake was a former private airport that was closed in 2000 and was converted into a county park that opened in 2010.

Ferries

Snohomish County is also connected to adjacent counties by two ferry routes operated by Washington State Ferries. The Edmonds–Kingston ferry carries SR 104 between Edmonds and Kingston in Kitsap County. The Mukilteo–Clinton ferry carries SR 525 from Mukilteo to Clinton on Whidbey Island.

Communities

Cities

Towns

• Darrington
• Index

Census-designated places

Unincorporated communities

See also

In Spanish: Condado de Snohomish para niños