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The Commemorative
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The Commemorative Quarter for Arizona

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

The community of Phoenix is the Seat for Maricopa County. Phoenix is also the capital of Arizona.

Maricopa County was founded in 1871. Maricopa was created by taking area from Pima and Counties.

From the Census Estimates for 2009, <1> Maricopa had a population of 4,023,132 people. This is an increase of 30.95% since the last Census (which gave a population of 3,072,149 people in 2000).

At the time of the 2000 Census, Maricopa represented 59.88% of the total population of Arizona, making it the state's 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
20103,817,117+24.25%-5.12% since 2009
20094,023,132+30.95%+1.64% since 2008
20083,958,263+28.84%+2.2% since 2007
20003,072,149The Last Census

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


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

Community 2009
(2009vs. 2000)
Phoenix   1,593,6591,321,04520.64% increase  
Mesa   467,157396,37517.86% increase  
Glendale   253,209218,81215.72% increase  
Chandler   249,535176,58141.31% increase  
Scottsdale   237,844202,70517.34% increase  

Websites for Maricopa County

Official Website:   www.maricopa.gov/

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