Sequim is a city in Clallam County, Washington, United States. It is located on the north side of the Olympic Peninsula between the Dungeness River and Sequim Bay. The city is south of the Strait of Juan de Fuca and north of the Olympic Mountains. The population was 8,024 as of the 2020 census; the estimated population in 2023 was 8,203. Sequim is connected to nearby Port Angeles by U.S. Route 101, which runs south of the city's downtown.