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Welcome to Jefferson County ...
Time Zone: Jefferson County lies in the Pacific Time Zone (PST/PDT) and observes daylight saving time.
The community of Port Townsend is the Seat for Jefferson County.
Jefferson County was founded in 1852 and was created by taking area from Thurston County.
From the Census Estimates for 2019, <1> Jefferson had a population of 32,347 people. This is an increase of 8.29% since the last Census (which gave a population of 29,872 people in 2010).
At the time of the 2010 Census, Jefferson represented 0.44% of the total population of Washington.
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This page was last modified/updated: 14 May 2023