Martha Lake is a census-designated place (CDP) in Snohomish County, Washington, United States. The population was 21,129 at the 2020 census. It lies west of Mill Creek and northeast of Lynnwood, near the lake of the same name.
With the main goal of establishing better fire protection and water service, better access to schools and safer roads, Tukwila was incorporated as a fourth-class city on June 14, 1908 with a population of around 450.