Jefferson County

Jefferson County is an administrative region in western Washington with varied landscapes ranging from dense forests to extensive coastlines. The area contains mountains, valleys, and numerous small communities scattered throughout the natural terrain.

The region was established in 1852 and named after the third U.S. President. It ranks among the earliest administrative divisions created during Washington's territorial period.

Local communities here maintain a strong connection to the ocean and forests, which shapes how people spend their time and what they value. Visitors will notice the importance of outdoor activities in everyday life and the way the landscape influences local identity.

Visitors should prepare for changing weather conditions, particularly in cooler months when rain is frequent. The best time to explore is from late spring through early fall, when conditions are more stable.

The region hosts rare ecosystems where temperate rainforests meet alpine environments, making it a globally significant nature preserve. This ecological variety draws researchers and nature enthusiasts who cannot find similar landscapes elsewhere.

Location: Washington

Inception: 1852

Capital city: Port Townsend

Shares border with: Island County, Kitsap County, Mason County, Grays Harbor County, Clallam County, San Juan County, Capital Regional District

Website: http://co.jefferson.wa.us

GPS coordinates: 47.84000,-123.58000

Latest update: December 20, 2025 12:40