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The Commemorative
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Time Zone: Clark County lies in the Eastern Time Zone (EST/EDT) and observes daylight saving time.

The community of Springfield is the Seat for Clark County.

Clark County was founded March 1, 1818. Clark was created by taking area from Champaign, and Counties.

From the Census Estimates for 2009, <1> Clark had a population of 139,671 people. This is a decrease of 3.5% since the last Census (which gave a population of 144,742 people in 2000).

At the time of the 2000 Census, Clark represented 1.27% of the total population of Ohio, making it the state's 19th most populous county (out of 88 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
2010138,333-4.43%-0.96% since 2009
2009139,671-3.5%-0.11% since 2008
2008139,818-3.4%-0.26% since 2007
2000144,742The Last Census

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


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

Community 2009
(2009vs. 2000)
Springfield   62,06065,3585.05% decrease  
New Carlisle   5,6175,7352.06% decrease  
Enon   2,5342,6383.94% decrease  
South Charleston   1,7731,8504.16% decrease  
South Vienna   4494694.26% decrease  

Websites for Clark County

Official Website:   www.co.clark.oh.us/

If you know of a history or genealogy society whose interest includes Clark 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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