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The Commemorative Quarter for Wisconsin

Time Zone: Jefferson County lies in the Central Time Zone (CST/CDT) and observes daylight saving time.

The community of Jefferson is the Seat for Jefferson County.

Jefferson County was founded in 1836 and was created by taking area from MilwaukeeCounty.

From the Census Estimates for 2009, <1> Jefferson had a population of 80,833 people. This is an increase of 9.2% since the last Census (which gave a population of 74,021 people in 2000).

At the time of the 2000 Census, Jefferson represented 1.38% of the total population of Wisconsin, making it the state's 21st most populous county (out of 72 counties).

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

YearPopulationChange
Since 2000
Year-to-Year Change
201083,686+13.06%+3.53% since 2009
200980,833+9.2%+0.31% since 2008
200880,580+8.86%+0.72% since 2007
200780,006+8.09% 
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200074,021The Last Census

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

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Below are some of the communities located in Jefferson County (for more communities, please visit our Nearby Page for Jefferson County):

Community 2009
Population
2000
Population
Change
(2009vs. 2000)
Watertown   22,93921,5986.21% increase  
Fort Atkinson   11,92911,6212.65% increase  
Jefferson   7,8917,3387.54% increase  
Lake Mills   5,5174,84313.92% increase  
Ixonia   3,7192,90228.15% increase  

Websites for Jefferson County

Official Website:   www.co.jefferson.wi.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 Wisconsin

Index of Cities, Towns and Villages for Wisconsin


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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