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

Miami County was founded March 1, 1807 and was created by taking area from MontgomeryCounty.

From the Census Estimates for 2009, <1> Miami had a population of 101,256 people. This is an increase of 2.42% since the last Census (which gave a population of 98,868 people in 2000).

At the time of the 2000 Census, Miami represented 0.87% of the total population of Ohio, making it the state's 28th 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.

YearPopulationChange
Since 2000		Year-to-Year Change
2010102,506+3.68%+1.23% since 2009
2009101,256+2.42%+0.13% since 2008
2008101,128+2.29%+0.18% since 2007
2007100,945+2.1% 
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200098,868The Last Census

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

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

Community 2009
Population		2000
Population		Change
(2009vs. 2000)
Troy   22,01321,999  
Piqua   20,55120,7380.9% decrease  
Tipp City   9,2609,2210.42% increase  
West Milton   4,6194,6450.56% decrease  
Covington   2,6312,5592.81% increase  

Websites for Miami County

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

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