At the federal level, Mill Creek has been part of the 1st congressional district since 2012 and is represented by Democrat Suzan DelBene of Medina. At the state level, the city is part of the 44th legislative district alongside Lake Stevens and Snohomish. Mill Creek is also part of the Snohomish County Council's 4th district, which includes northern Bothell, Brier, and Mountlake Terrace; the district is represented by Jared Mead, a former Mill Creek city councilman and state legislator who was appointed in 2020.