Mountlake Terrace is a city in Snohomish County, Washington, United States. It is a northern suburb of Seattle and lies north of Shoreline and Lake Forest Park, east of Edmonds, south of Lynnwood, and west of Brier. Its southern boundary runs along the King County line. Interstate 5 runs north-south through the city, and services the city via three exits. Founded in 1954, Mountlake Terrace has changed from a small rural community into a metropolitan suburb with a population of 21,090 residents (2015 estimate from State OFM). The efforts of the city’s pioneers and leaders throughout the decades have created a unique City, filled with many amenities, and a vision for the future.
The residential community of Mountlake Terrace began with the speculative construction of homes for returning World War II veterans and their young families. Within ten years, the population grew to 5,000 and a group of civic-minded residents took steps to create a municipal government. The City of Mountlake Terrace was incorporated on November 29, 1954 under a Council-Manager form of government.