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The Commemorative
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The Commemorative Quarter for Arizona

Time Zone: Yuma County lies in the Mountain Standard Time Zone (MST) and does not observe daylight saving time.

The community of Yuma is the Seat for Yuma County.

Yuma County is one of the original counties of Arizona and was founded in 1864.

From the Census Estimates for 2009, <1> Yuma had a population of 196,972 people. This is an increase of 23.09% since the last Census (which gave a population of 160,026 people in 2000).

At the time of the 2000 Census, Yuma represented 3.12% of the total population of Arizona, making it the state's 5th most populous county (out of 15 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
2010195,751+22.32%-0.62% since 2009
2009196,972+23.09%+1.9% since 2008
2008193,299+20.79%+2.18% since 2007
2000160,026The Last Census

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


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

Community 2009
(2009vs. 2000)
Yuma   91,10577,51517.53% increase  
San Luis   25,68215,32267.6% increase  
Somerton   12,7547,26675.5% increase  
Wellton   1,9511,8296.67% increase  

Websites for Yuma County

Official Website:   www.co.yuma.az.us/

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