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The Commemorative
Quarter for
The Commemorative Quarter for Washington

Time Zone: Benton County lies in the Pacific Time Zone (PST/PDT) and observes daylight saving time.

The community of Prosser is the Seat for Benton County.

Benton County was founded in 1905. Benton was created by taking area from Yakima and Counties.

From the Census Estimates for 2009, <1> Benton had a population of 168,294 people. This is an increase of 18.12% since the last Census (which gave a population of 142,475 people in 2000).

At the time of the 2000 Census, Benton represented 2.42% of the total population of Washington, making it the state's 10th most populous county (out of 39 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
2010175,177+22.95%+4.09% since 2009
2009168,294+18.12%+2.61% since 2008
2008164,020+15.12%+2.87% since 2007
2000142,475The Last Census

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


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

Community 2009
(2009vs. 2000)
Kennewick   67,81454,69323.99% increase  
Richland   47,52738,70822.78% increase  
West Richland   11,5208,38537.39% increase  
Prosser   5,2824,8389.18% increase  
Benton City   3,0132,62414.82% increase  

Websites for Benton County

Official Website:   www.co.benton.wa.us/

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