Port Townsend is a city on the Quimper Peninsula in Jefferson County, Washington, United States. The population was 10,148 at the 2020 United States Census. It is the county seat and only incorporated city of Jefferson County.
In addition to its natural scenery at the northeast tip of the Olympic Peninsula, the city is known for the many Victorian buildings remaining from its late 19th-century heyday, numerous annual cultural events, and as a maritime center for independent boatbuilders and related industries and crafts. The Port Townsend Historic District is a U.S. National Historic Landmark District. It is also significantly drier than the surrounding region due to being in the rainshadow of the Olympic Mountains, receiving only 19 inches or 480 millimeters of rain per year.