The Stillaguamish people are a Southern Coast Salish people Indigenous to the Stillaguamish River valley in northwestern Washington State in the United States, near the city of Arlington, Washington. The Stillaguamish speak Northern Lushootseed, a Coast Salish language. Although usage of the language has declined, there are ongoing revitalization efforts by the Stillaguamish Tribe.

Stanwood is a city in Snohomish County, Washington, United States. The city is located 50 miles (80 km) north of Seattle, at the mouth of the Stillaguamish River near Camano Island. As of the 2020 census, its population is 7,705.