Hamilton is a town in Skagit County, Washington, United States. The population was 299 at the 2020 census. It is included in the Mount Vernon-Anacortes, Washington Metropolitan Statistical Area.
In 1881 the Corwin carried a scientific detachment including John Muir, Irving C. Rosse, M.D., and Edward W. Nelson, and in the course of the search for the Jeannette landed parties on Herald and Wrangel Islands in the Chukchi Sea.