Time Zone: Warren County lies in the Eastern Time Zone (EST/EDT) and observes daylight saving time.
Warren County was founded May 1, 1803 and was created by taking area from HamiltonCounty.
From the Census Estimates for 2009, <1> Warren had a population of 210,712 people. This is an increase of 33.04% since the last Census (which gave a population of 158,383 people in 2000).
At the time of the 2000 Census, Warren represented 1.4% of the total population of Ohio, making it the state's 14th 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.
Year | Population | Change Since 2000 | Year-to-Year Change |
2010 | 212,693 | +34.29% | +0.94% since 2009 |
2009 | 210,712 | +33.04% | +1.58% since 2008 |
2008 | 207,425 | +30.96% | +1.66% since 2007 |
2007 | 204,045 | +28.83% | |
--- | | | 2000 | 158,383 | The Last Census |
More information can be found on the Warren County Census Page for Warren County. .
Below are some of the communities located in Warren County (for more communities, please visit our Nearby Page for Warren County):
Community | 2009 Population | 2000 Population | Change (2009vs. 2000) |
Mason | 29,995 | 22,016 | 36.24% increase |
Lebanon | 20,756 | 16,962 | 22.37% increase |
Franklin | 13,118 | 11,396 | 15.11% increase |
Carlisle | 6,106 | 5,121 | 19.23% increase |
South Lebanon | 3,730 | 2,538 | 46.97% increase |
Websites for Warren County
If you know of a history or genealogy society whose interest includes Warren 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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