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The Commemorative
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The Commemorative Quarter for California

The 2000 Census showed that Orange County had a population of 2,846,289 people. This represented 8.4% of the total population of California, making it the state's 2nd most populous county (out of 58 counties).

From the Census Estimates for 2009<1>, Orange had a population of 3,026,786 people. This is an increase of 6.34% 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
20103,010,232+5.76%-0.55% since 2009
20093,026,786+6.34%+1.26% since 2008
20082,989,141+5.02%+1.06% since 2007
20072,957,902+3.92%+0.16% since 2006
20062,953,062+3.75%-0.14% since 2005
20042,956,096+3.86%+0.54% since 2003
20032,940,109+3.3%+0.79% since 2002
20022,917,106+2.49%+0.9% since 2001
20012,890,972+1.57%+1.57% since 2000
20002,846,289The Last Census

Orange County had 969,484 Housing Units<2> at the time of the 2000 Census.

The 2000 Census shows that Orange County has a total area<3> of 947 square miles [2,455 km²]. Of this total, 789 square miles [2,044 km²] of the area is land, with the balance (16.73%) being water (158.6 square miles [410.7 km²]).

Using the above population and land area values, Orange County had a population density of 3,605 people per square mile [1,392 people/km²], making it the state's 2nd most densely populated county (out of 58 counties).

US Census QuickFacts

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

Click here for the Orange County QuickFact (QF-06059).

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

(2009 Est)
(2000 Census)
Change in
Santa AnaQF-0669000340,338337,9770.7%
Huntington BeachQF-0636000193,366189,5941.99%
Garden GroveQF-0629000166,332165,1960.69%
Costa MesaQF-0616532110,419108,7241.56%
Mission ViejoQF-064825694,65193,1021.66%
Newport BeachQF-065118281,68070,03216.63%
Buena ParkQF-060878679,81878,2821.96%
Lake ForestQF-063949675,86458,70729.22%
Yorba LindaQF-068683266,12058,91812.22%
Laguna NiguelQF-063924864,68061,8914.51%
San ClementeQF-066508461,61049,93623.38%
La HabraQF-063929059,41058,9740.74%
Fountain ValleyQF-062538055,84354,9781.57%

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

(2009 Est.)
(2000 Census)
Change in
Los AngelesQF-06037   NW9,848,0119,519,3383.45%
RiversideQF-06065   E2,125,4401,545,38737.53%
San BernardinoQF-06071   NE2,017,6731,709,43418.03%
San DiegoQF-06073   SE3,053,7932,813,8338.53%

The western boundary of the county is on the Pacific Ocean.

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U.S. Census Bureau
Census QuickFact for Orange 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 Orange. 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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