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The Commemorative
Quarter for
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The Commemorative Quarter for Missouri

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

Jefferson County was founded in 1818. Jefferson was created by taking area from Saint Louis and Counties.

From the Census Estimates for 2009, <1> Jefferson had a population of 219,046 people. This is an increase of 10.57% since the last Census (which gave a population of 198,099 people in 2000).

At the time of the 2000 Census, Jefferson represented 3.54% of the total population of Missouri, making it the state's 5th most populous county (out of 115 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
2010218,733+10.42%-0.14% since 2009
2009219,046+10.57%+0.66% since 2008
2008217,599+9.84%+0.79% since 2007
2007215,904+8.99% 
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2000198,099The 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)
Arnold   20,60919,9653.23% increase  
Festus   11,3679,66017.67% increase  
De Soto   6,4836,3751.69% increase  
Pevely   5,8833,76856.1% increase  
Crystal City   4,5234,2476.5% increase  

Websites for Jefferson County

Official Website:   www.jeffcomo.org/

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.

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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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