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The Commemorative Quarter for Arizona

The 2000 Census showed that Pima County had a population of 843,746 people. This represented 16.45% of the total population of Arizona, making it the state's 2nd most populous county (out of 15 counties).

From the Census Estimates for 2009<1>, Pima had a population of 1,020,200 people. This is an increase of 20.91% since the 2000 Census.

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
2010980,263+16.18%-3.91% since 2009
20091,020,200+20.91%+1.03% since 2008
20081,009,832+19.68%+1.33% since 2007
2007996,593+18.12%+2.16% since 2006
2006975,476+15.61%+2.79% since 2005
2005948,965+12.47%+2.68% since 2004
2004924,205+9.54%+2.31% since 2003
2003903,320+7.06%+1.95% since 2002
2002886,063+5.02%+2.35% since 2001
2001865,694+2.6%+2.6% since 2000
2000843,746The Last Census

Pima County had 366,737 Housing Units<2> at the time of the 2000 Census.

The 2000 Census shows that Pima County has a total area<3> of 9,188 square miles [23,798 km²]. Of this total, only a minor amount of that area is covered by water (2.57 square miles [6.64 km²]).

Using the above population and land area values, Pima County had a population density of 91.8 people per square mile [35.46 people/km²], making it the state's 2nd most densely populated county (out of 15 counties).

US Census QuickFacts

The Census Bureau has created documents containing demographic information that are called QuickFacts. A QuickFact that is specific to Pima County is available. The QuickFact also contains a comparison between Pima and the state of Arizona.

Click here for the Pima County QuickFact (QF-04019).

Below are some of the communities that are located in Pima County:

(2009 Est)
(2000 Census)
Change in
Oro ValleyQF-045160044,00329,70048.16%
South TucsonQF-04688506,0425,49010.05%

Below are the counties that adjoin and form the boundaries of Pima County. A link to their specific Census QuickFact has been provided.

(2009 Est.)
(2000 Census)
Change in
CochiseQF-04003   E129,518117,7559.99%
GrahamQF-04009   NE37,04533,48910.62%
MaricopaQF-04013   NW4,023,1323,072,14930.95%
PinalQF-04021   NW340,962179,72789.71%
Santa CruzQF-04023   S43,77138,38114.04%
YumaQF-04027   W196,972160,02623.09%

The nation of Mexico lies to the south.

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U.S. Census Bureau
Census QuickFact for Pima County

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>A Housing Unit is a broad term for those places where people live (whether occupied or temporarily vacant), such as a house, an apartment, a mobile home, or an area that is considered as a separate living quarter. Separate living quarters (consisting of one or more rooms) are considered to be those places where people live, sleep and eat separately from others and that have access to the outside (either directly or by a shared hallway).

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<3>The area value has been supplied by the US Census Bureau and it can be different than the geographic boundaries of Pima. The value given by the Census Bureau reflects their statistical (or sampling) requirements.

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<4>All Quarter-dollar coin images from the United States Mint.

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