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The Commemorative
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The Commemorative Quarter for Pennsylvania

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

The community of Washington is the Seat for Washington County.

Washington County was founded March 28, 1781 and was created by taking area from WestmorelandCounty.

From the Census Estimates for 2009, <1> Washington had a population of 207,389 people. This is an increase of 2.21% since the last Census (which gave a population of 202,897 people in 2000).

At the time of the 2000 Census, Washington represented 1.65% of the total population of Pennsylvania, making it the state's 18th most populous county (out of 67 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
2010207,820+2.43%+0.21% since 2009
2009207,389+2.21%+0.31% since 2008
2008206,740+1.89%+0.48% since 2007
2000202,897The Last Census

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


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

Community 2009
(2009vs. 2000)
Washington   14,71615,2683.62% decrease  
Canonsburg   8,7218,6071.32% increase  
California   6,2595,27418.68% increase  
Donora   5,2535,6537.08% decrease  
Charleroi   4,5424,8716.75% decrease  

Websites for Washington County

Official Website:   www.co.washington.pa.us/

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