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The Commemorative Quarter for California

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

The community of Auburn is the Seat for Placer County.

Placer County was founded in 1851. Placer was created by taking area from Sutter and Counties.

From the Census Estimates for 2009, <1> Placer had a population of 348,552 people. This is an increase of 40.32% since the last Census (which gave a population of 248,399 people in 2000).

At the time of the 2000 Census, Placer represented 0.73% of the total population of California, making it the state's 23rd 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.

YearPopulationChange
Since 2000
Year-to-Year Change
2010348,432+40.27% 
2009348,552+40.32%+2.2% since 2008
2008341,041+37.3%+2.76% since 2007
2007331,870+33.6% 
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2000248,399The Last Census

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

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

Community 2009
Population
2000
Population
Change
(2009vs. 2000)
Roseville   115,67779,92144.74% increase  
Rocklin   53,56836,33047.45% increase  
Lincoln   44,42711,205296.5% increase  
Auburn   13,35112,4627.13% increase  
Loomis   6,8736,2609.79% increase  

Websites for Placer County

Official Website:   www.placer.ca.gov/

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