Learn About
The Commemorative
Quarter for
The Commemorative Quarter for Washington

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 ThurstonCounty.

From the Census Estimates for 2009, <1> Jefferson had a population of 29,676 people. This is an increase of 14.35% since the last Census (which gave a population of 25,953 people in 2000).

At the time of the 2000 Census, Jefferson represented 0.44% of the total population of Washington, making it the state's 27th most populous county (out of 39 counties).

The following table shows the recent changes in population. Other than 2000, the population counts have been estimated by the Census Bureau.

Since 2000
Year-to-Year Change
201029,872+15.1%+0.66% since 2009
200929,676+14.35%+0.28% since 2008
200829,592+14.02%+1.09% since 2007
200025,953The Last Census

More information can be found on the Jefferson County Census Page for Jefferson County.


Websites for Jefferson County

Official Website:   www.co.jefferson.wa.us/

If you know of a history or genealogy society whose interest includes Jefferson County, would you please send us the URL for their website? We would like to add their link to our Gazetteer. To contact us, please visit our Feedback Page.

Other Roadside Stops ...

About Washington

Index of Cities, Towns and Villages for Washington

Footnotes ...

<1>On a yearly basis, the US Census Bureau creates an estimate of the county's population. Keep in mind that this is an estimate and not an actual count. The last physical count was the 2000 Census and the next count will be for the 2010 Census.

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<2>All Quarter-dollar coin images from the United States Mint.

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