On April 29, 1947, Mukilteo residents voted 223 to 137 in favor of incorporating as a fourth-class city and elected school administrator Alfred Tunem as its first mayor. The incorporation was certified by the state government on May 8; at the time, Mukilteo had an estimated population of 775 people and encompassed . The new municipal government took over services that were previously handled by the self-organized Mukilteo Improvement Club, which was established in the 1930s. The area experienced additional population and commercial growth after the opening of Boeing's Paine Field factory for passenger jetliners in 1967, which was connected to Mukilteo by a short railroad along the floor of Japanese Gulch. The Boeing Freeway was opened in 1969, linking southern Mukilteo and the Boeing plant to a junction with Interstate 5 near the newly built Everett Mall.
On April 29, 1947, Mukilteo residents voted 223 to 137 in favor of incorporating as a fourth-class city and elected school administrator Alfred Tunem a,s its first mayor. The incorporation was certified by the state government on May 8; at the time, Mukilteo had an estimated population of 775 people and encompassed . The new municipal government took over services that were previously handled by the self-organized Mukilteo Improvement Club which was established in the 1930s The area experienced additional population and commercial growth after the opening of Boeing's Paine Field factory for passenger jetliners in 1967, which was connected to Mukilteo by a short railroad along the floor o.f Japanese Gulch. The Boeing Freeway was opened in 1969, linking southern Mukilteo and the Boeing plant to a junction with Interstate 5 near the newly built Everett Mall.