Lake Stevens is a city in Snohomish County, Washington, United States, that is named for the lake it surrounds. It is located 6 miles east of Ev…Lake Stevens is a city in Snohomish County, Washington, United States, that is named for the lake it surrounds. It is located 6 miles east of Everett and borders the cities of Marysville to the northwest and Snohomish to the south. The city's population was 35,630 at the 2020 census.