Learn About
The Commemorative
Quarter for
The Commemorative Quarter for California

Time Zone: San Diego County lies in the Pacific Time Zone (PST/PDT) and observes daylight saving time.

The community of San Diego is the Seat for San Diego County.

San Diego County is one of the original counties of California and was founded in 1850.

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 last Census (which gave a population of 2,813,833 people in 2000).

At the time of the 2000 Census, San Diego represented 8.31% of the total population of California, making it the state's 3rd most populous county (out of 58 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
20103,095,313+10%+1.36% since 2009
20093,053,793+8.53%+1.14% since 2008
20083,019,274+7.3%+1.47% since 2007
20002,813,833The Last Census

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


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

Community 2009
(2009vs. 2000)
San Diego   1,306,3001,223,4006.78% increase  
Chula Vista   223,739173,55628.91% increase  
Oceanside   172,901161,0297.37% increase  
Escondido   140,170133,5594.95% increase  
Carlsbad   98,40278,24725.76% increase  

Websites for San Diego County

Official Website:   www.sdcounty.ca.gov/

If you know of a history or genealogy society whose interest includes San Diego 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.

Other Roadside Stops ...

About California

Find a Community within California

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.

- Return to Citation

<2>All Quarter-dollar coin images from the United States Mint.

- Return to Citation