Sequim is a city in Clallam County, Washington, United States. It is located along the Dungeness River near the base of the Olympic Mountains. The 2020 census counted a population of 8,018, with an estimated population in 2021 of 8,241.

Clallam County is a county in the U.S. state of Washington. As of the 2020 census, the population was 77,155, with an estimated population of 77,805 in 2022. The county seat and largest city is Port Angeles; the county as a whole comprises the Port Angeles, WA Micropolitan Statistical Area. The name is a Klallam word for "the strong people". The county was formed on April 26, 1854. Located on the Olympic Peninsula, it is south from the Strait of Juan de Fuca, which forms the Canada–US border, as British Columbia's Vancouver Island is across the strait.