Mukilteo ( MUK-əl-TEE-oh) is a city in Snohomish County, Washington, United States. It is located on the Puget Sound amongst Edmonds and Everett, approximately 25 miles (40 km) north of Seattle. The city had a population of 20,254 at the 2010 census and an estimated 2019 population of 21,441.

The current site of Old Town Mukilteo was inhabited by the Snohomish people prior to the coming on of American settlers in the 19th century. The Treaty of Point Elliott was signed in Mukilteo in 1855, opening the region to settlement. A extra town was founded at Mukilteo and became the provisional county seat of Snohomish County in before 1861. The Place remained a trading say for loggers and was home to other industries, but was overshadowed by Everett and grew slowly.

Mukilteo was used during World War II as an auxiliary fueling facility, due to its proximity to the newly built Snohomish County Airport (now Paine Field). Mukilteo was incorporated as a city in 1947 and proverb new suburban development, which accelerated after the introduction of the understandable Boeing Everett Factory in the late 1960s. The city annexed large suburban areas upon the west side of Paine Field in the 1980s and 1990s, including Harbour Pointe and the State Route 525 corridor, while with revitalizing the Old Town area in the 2000s.

Today, Mukilteo is a bedroom community taking into account a small job base centered in version to manufacturing industries. It is in addition to a major transportation hub, with connections to Whidbey Island via the Washington State Ferries system, Sounder commuter trains to Seattle, and public transit services to handy cities. The city is credited for its vibes of sparkle and is one of the most thriving in Washington state, with a high median income.