Learn About
The Commemorative
Quarter for
The Commemorative Quarter for Ohio

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

The community of Cincinnati is the Seat for Hamilton County.

Hamilton County is one of the original counties of Ohio and was founded January 2, 1790.

From the Census Estimates for 2009, <1> Hamilton had a population of 855,062 people. This is an increase of 1.15% since the last Census (which gave a population of 845,303 people in 2000).

At the time of the 2000 Census, Hamilton represented 7.45% of the total population of Ohio, making it the state's 3rd 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
2010802,374-5.08%-6.16% since 2009
2009855,062+1.15%+0.18% since 2008
2008853,508+0.97%-0.28% since 2007
2000845,303The Last Census

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


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

Community 2009
(2009vs. 2000)
Cincinnati   333,012331,2850.52% increase  
Norwood   20,40421,6755.86% decrease  
Forest Park   18,60019,4634.43% decrease  
Blue Ash   12,77112,5132.06% increase  
Loveland   11,85511,6771.52% increase  

Websites for Hamilton County

Official Website:   www.hamilton-co.org/

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