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The Commemorative
Quarter for
The Commemorative Quarter for Ohio

The 2000 Census showed that Clark County had a population of 144,742 people. This represented 1.27% of the total population of Ohio, making it the state's 19th most populous county (out of 88 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 2000 Census.

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
2007140,187-3.15%-0.49% since 2006
2006140,875-2.67%-0.47% since 2005
2004141,565-2.19%-0.25% since 2003
2003141,915-1.95%-1.04% since 2002
2002143,412-0.92%-0.36% since 2001
2001143,929-0.56%-0.56% since 2000
2000144,742The Last Census

Clark County had 61,056 Housing Units<2> at the time of the 2000 Census.

The 2000 Census shows that Clark County has a total area<3> of 403.6 square miles [1,045 km²]. Of this total, only a minor amount of that area is covered by water (3.7 square miles [9.59 km²]).

Using the above population and land area values, Clark County had a population density of 362 people per square mile [139.8 people/km²], making it the state's 15th most densely populated county (out of 88 counties).

US Census QuickFacts

The Census Bureau has created documents containing demographic information that are called QuickFacts. A QuickFact that is specific to Clark County is available. The QuickFact also contains a comparison between Clark and the state of Ohio.

Click here for the Clark County QuickFact (QF-39023).

Below are some of the communities that are located in Clark County:

(2009 Est)
(2000 Census)
Change in
New CarlisleQF-39543345,6175,735-2.06%

Below are the counties that adjoin and form the boundaries of Clark County. A link to their specific Census QuickFact has been provided.

(2009 Est.)
(2000 Census)
Change in
ChampaignQF-39021   N39,71338,8902.12%
GreeneQF-39057   SW159,823147,8868.07%
MadisonQF-39097   E42,53940,2135.78%
MiamiQF-39109   NW101,25698,8682.42%
MontgomeryQF-39113   SW532,562559,062-4.74%

Other Roadside Stops ...

About Ohio

Index of Cities, Towns and Villages for Ohio

Off-the-Road Links ...

U.S. Census Bureau
Census QuickFact for Clark County

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>A Housing Unit is a broad term for those places where people live (whether occupied or temporarily vacant), such as a house, an apartment, a mobile home, or an area that is considered as a separate living quarter. Separate living quarters (consisting of one or more rooms) are considered to be those places where people live, sleep and eat separately from others and that have access to the outside (either directly or by a shared hallway).

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<3>The area value has been supplied by the US Census Bureau and it can be different than the geographic boundaries of Clark. The value given by the Census Bureau reflects their statistical (or sampling) requirements.

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<4>All Quarter-dollar coin images from the United States Mint.

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