Steilacoom is a town in Pierce County, Washington, United States. The population was 5,985 at the 2010 census. Steilacoom is on the coast of Puget Sound, on a branch not visible on the map to the right. Steilacoom incorporated in 1854 and became the first incorporated town in what is now Washington State.
Based on per capita income, one of the more reliable measures of affluence, Steilacoom ranks 61st of 522 areas in the state of Washington to be ranked. The Steilacoom School District #1 consists of Cherrydale Primary School, Saltar's Point Elementary School, Harriet Taylor Elementary School, Anderson Island School, Chloe Clark Elementary School, Pioneer Middle School, and Steilacoom High School.
The origin of the name "Steilacoom" is unclear. One story is that it comes from fur traders with the Hudson's Bay Company (HBC) and is an adaptation of "Tail-a-Koom", the name of an Indian chief. In 1824 HBC chief factor John Work called it "Chilacoom". Another early spelling was "Chelakom". The Town of Steilacoom says it comes from the name of the Steilacoom tribe, especially their main village in the Tacoma area, located on Chambers Bay. This village was called Scht’ləqʷəm, later anglicized as Steilacoom. William Bright says the name comes from the Southern Coast Salish subgroup /č'tílqʷəbš/, anglicized as "Steilacoom".