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

The community of Ithaca is the Seat for Tompkins County.

Tompkins County was founded in 1817. Tompkins was created by taking area from Cayuga and Counties.

From the Census Estimates for 2009, <1> Tompkins had a population of 101,779 people. This is an increase of 5.47% since the last Census (which gave a population of 96,501 people in 2000).

At the time of the 2000 Census, Tompkins represented 0.51% of the total population of New York, making it the state's 29th 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
2010101,564+5.25%-0.21% since 2009
2009101,779+5.47%+0.74% since 2008
2008101,027+4.69%+0.61% since 2007
200096,501The Last Census

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


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

Community 2009
(2009vs. 2000)
Ithaca   30,01329,2872.48% increase  
Ithaca   20,30718,19811.59% increase  
Dryden   14,34213,5325.99% increase  
Lansing   11,07110,5215.23% increase  
Groton   5,9045,7941.9% increase  

Websites for Tompkins County

Official Website:   www.co.tompkins.ny.us/

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