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.

The Stillaguamish River is a river in the northwestern region of the U.S. state of Washington. It is mainly composed of two forks, the longer North Fork Stillaguamish and the South Fork Stillaguamish. The two forks join near Arlington. From there the Stillaguamish River proper flows for 22 miles (35 km) to Puget Sound. The river's watershed drains part of the Cascade Range north of Seattle.