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The Commemorative
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The Commemorative Quarter for California

The 2000 Census showed that San Diego County had a population of 2,813,833 people. This represented 8.31% of the total population of California, making it the state's 3rd most populous county (out of 58 counties).

From the Census Estimates for 2009<1>, San Diego had a population of 3,053,793 people. This is an increase of 8.53% 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
20103,095,313+10%+1.36% since 2009
20093,053,793+8.53%+1.14% since 2008
20083,019,274+7.3%+1.47% since 2007
20072,975,656+5.75%+0.96% since 2006
20062,947,222+4.74%+0.19% since 2005
20052,941,770+4.55%+0.21% since 2004
20042,935,672+4.33%+0.3% since 2003
20032,926,814+4.02%+0.88% since 2002
20022,901,235+3.11%+1.19% since 2001
20012,867,094+1.89%+1.89% since 2000
20002,813,833The Last Census

San Diego County had 1,040,149 Housing Units<2> at the time of the 2000 Census.

The 2000 Census shows that San Diego County has a total area<3> of 4,525 square miles [11,721 km²]. Of this total, 4,199 square miles [10,877 km²] of the area is land, with the balance (7.2%) being water (325.6 square miles [843 km²]).

Using the above population and land area values, San Diego County had a population density of 669 people per square mile [258.7 people/km²], making it the state's 9th 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 San Diego County is available. The QuickFact also contains a comparison between San Diego and the state of California.

Click here for the San Diego County QuickFact (QF-06073).

Below are some of the communities that are located in San Diego County:

(2009 Est)
(2000 Census)
Change in
San DiegoQF-06660001,306,3001,223,4006.78%
Chula VistaQF-0613392223,739173,55628.91%
El CajonQF-062171294,44794,869-0.44%
San MarcosQF-066819680,69954,97746.79%
National CityQF-065039856,12354,2603.43%
La MesaQF-064000455,54754,7491.46%
Imperial BeachQF-063629427,00326,992
Lemon GroveQF-064112424,59724,918-1.29%
Solana BeachQF-067250613,05912,9790.62%

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

(2009 Est.)
(2000 Census)
Change in
ImperialQF-06025   E166,874142,36117.22%
OrangeQF-06059   NW3,026,7862,846,2896.34%
RiversideQF-06065   N2,125,4401,545,38737.53%

The Pacific Ocean lies to the west and the nation of Mexico lies to the south.

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About California

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U.S. Census Bureau
Census QuickFact for San Diego 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 San Diego. 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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