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The Commemorative
Quarter for
The Commemorative Quarter for Ohio

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

Union County was founded April 1, 1820. Union was created by taking area from Delaware, , and Counties.

From the Census Estimates for 2009, <1> Union had a population of 48,903 people. This is an increase of 19.54% since the last Census (which gave a population of 40,909 people in 2000).

At the time of the 2000 Census, Union represented 0.36% of the total population of Ohio, making it the state's 58th 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
201052,300+27.84%+6.95% since 2009
200948,903+19.54%+1.17% since 2008
200848,339+18.16%+1.3% since 2007
200040,909The Last Census

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


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

Community 2009
(2009vs. 2000)
Marysville   18,39415,94215.38% increase  
Richwood   2,1972,1561.9% increase  
Milford Center   70362612.3% increase  
Magnetic Springs   3173231.86% decrease  
Unionville Center   2892993.34% decrease  

Websites for Union County

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

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