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- source: Getty Thesaurus of Geographic Names
- source: Family History Library Catalog
- the text in this section is copied from an article in Wikipedia
Snohomish County 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 75th-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.
Timeline
| Date | Event | Source
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| 1861 | County formed | Source:Red Book: American State, County, and Town Sources
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| 1862 | Land records recorded | Source:Red Book: American State, County, and Town Sources
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| 1866 | Probate records recorded | Source:Red Book: American State, County, and Town Sources
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| 1867 | Marriage records recorded | Source:Red Book: American State, County, and Town Sources
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| 1870 | First census | Source:Population of States and Counties of the United States: 1790-1990
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| 1870 | No significant boundary changes after this year | Source:Population of States and Counties of the United States: 1790-1990
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| 1876 | Court records recorded | Source:Red Book: American State, County, and Town Sources
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| 1881 | Birth records recorded | Source:Red Book: American State, County, and Town Sources
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Population History
- source: Source:Population of States and Counties of the United States: 1790-1990
| Census Year | Population
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| 1870 | 599
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| 1880 | 1,387
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| 1890 | 8,514
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| 1900 | 23,950
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| 1910 | 59,209
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| 1920 | 67,690
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| 1930 | 78,861
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| 1940 | 88,754
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| 1950 | 111,580
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| 1960 | 172,199
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| 1970 | 265,236
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| 1980 | 337,720
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| 1990 | 465,642
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