Snohomish County

Snohomish County is located on the Puget Sound, between Skagit County to the north and King County (and Seattle) to the south. 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 73rd-most populous in the United States. Covering 2,090 square miles, it is the 13th largest county in total land area in Washington. Snohomish County’s varied topography ranges from saltwater beaches, rolling hills and rich river bottom farmlands in the west to dense forest and alpine wilderness in the mountainous east.

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. 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 Market Statistics