Mukilteo (/ˌmʌkəltiːoʊ/ US dict: mŭk′·əl·tē′·ō), which means "good camping ground", is a city in Snohomish County, Washington, United States. The population was 20,254 at the 2010 census. It is on the shore of the Puget Sound, and is the site of a Washington State Ferries terminal linking it to Clinton, on Whidbey Island.
Mukilteo is one of the most affluent suburbs of Seattle. In 2007, the city had a median income of $83,569. Additionally, like the rest of the Seattle area, house prices have risen rapidly; the median value in 2007 was $567,000. Based on per capita income, Mukilteo ranks 29th of 522 areas in the state of Washington. The city is also home to one of the most expensive schools ever built in America, Kamiak High School. In 2009, Mukilteo was ranked as number 10 of Money Magazine's top 100 small towns of America to live in. In 2011, Mukilteo rose one rank to number 9.
Though the word Mukilteo is widely believed to mean "good camping site.", the authoritative HistoryLink.org site says that in the Snohomish dialect Muk-wil-teo means “narrow passage” , a reference to the sand spit that formed the original Mukilteo landing. Mukilteo was officially incorporated on May 8, 1947 but the city has a historic role in the development of the Puget Sound. It was at Mukilteo that the Point Elliott Treaty was signed between Governor Isaac Stevens and the chiefs of 22 Puget Sound tribes on January 22, 1855.