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

The community of Rochester is the Seat for Monroe County.

Monroe County was founded in 1821. Monroe was created by taking area from Genesee and Counties.

From the Census Estimates for 2009, <1> Monroe had a population of 733,703 people. This is a decrease of 0.22% since the last Census (which gave a population of 735,343 people in 2000).

At the time of the 2000 Census, Monroe represented 3.88% of the total population of New York, making it the state's 9th most populous county (out of 62 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
2010744,344+1.22%+1.45% since 2009
2009733,703-0.22%+0.3% since 2008
2008731,543-0.52%+0.13% since 2007
2000735,343The Last Census

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


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

Community 2009
(2009vs. 2000)
Rochester   207,294219,7735.68% decrease  
Greece   93,40594,1410.78% decrease  
Irondequoit   49,89652,3544.69% decrease  
Perinton   45,69546,0900.86% decrease  
Henrietta   45,63139,02816.92% increase  

Websites for Monroe County

Official Website:   www.monroecounty.gov/

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