Placer County, California
Placer County: County in California, United States
About
Placer County is a county located in the U.S. state of California. As of the 2010 census, the population was 348,432 and a population density of 90 people per km². After 10 years in 2020 county had an estimated population of 402,950 inhabitants. Its county seat is Auburn. The county was created 174 years ago in 1850.
Quick Facts about Placer County
| Population : | 402,950 (2020) |
| Country : | United States of America |
| State : | California (United States) |
| Area : | 3892 km2 |
| Water as percent of area : | 6.35% |
| Land as percent of area : | 93.65% |
| Named for : | placer mining |
| Altitude : | 3,593 feet / 1095 meters |
| Capital : | Auburn |
| Establishment : | January 01, 1851 |
| Time Zone : | America/Los_Angeles |
| Local time : | 21:44:23 (17th May 2025) |
| Density : | 104 Pop. per km² as of 2020 |
| Population growth : | 13.53% (2010-2020) |
Geography
Placer County is located at 39°3'48"N 120°43'4"W (39.0634300, -120.7176600). It has 8 neighbors: El Dorado County, Nevada County, Sacramento County, Sutter County, Yuba County, Carson City, Douglas County and Washoe County.
Placer County map
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The largest city of Placer County is Roseville with a population of 144,725. Other cities include, Rocklin population 70,159, Lincoln population 48,996, Auburn population 14,205 and Loomis population 6,844. See all Placer County cities & populated places.
Placer County Populated Places
Cities, towns, neighborhoods & other populated places in Placer County.
| City Name | Population | Title |
|---|---|---|
| Roseville | 144,725 | The fifth most populous city in Sacramento County, California. |
| Rocklin | 70,159 | The most populous city in Placer County, California. |
| Lincoln | 48,996 | The most populous city in Placer County, California. |
| Granite Bay | 20,402 | Census-designated place in California, USA |
| Auburn | 14,205 | City in California, United States |
| North Auburn | 13,022 | Census designated place |
| Loomis | 6,844 | City in California |
| Kings Beach | 3,796 | Census-designated place in Placer County, California |
| Meadow Vista | 3,217 | Census-designated place in Placer County, California |
| Colfax | 2,009 | City in California, USA |
| Foresthill | 1,483 | Census-designated place in Placer County, California |
| Tahoe Vista | 1,433 | Census-designated place in Placer County, California |
| Dollar Point | 1,215 | Census-designated place in Placer County, California |
- Official Website
Official website of Placer County
Placer County has 8 neighbours.
- El Dorado County county in California, United States
- Nevada County county in California, United States
- Sacramento County county in California, United States
- Sutter County county in California, United States
- Yuba County county in California, United States
- Carson City The capital of Nevada. It is located in the Carson River Valley in western Nevada. Carson City is known for its many parks and green spaces, its many historical sites, and its many attractions, such as the Nevada State Capitol and the Nevada State Museum.
- Douglas County county in Nevada, United States
- Washoe County county in Nevada, United States
- Auburn
Demographics
The population of Placer County increased by 13.53% in 10 years.
| Year | Population | % Change | Method |
| 2010 | 348,432 | - | census |
| 2011 | 356,328 | 2.22% | estimation process |
| 2012 | 360,263 | 1.09% | estimation process |
| 2013 | 365,398 | 1.41% | estimation process |
| 2014 | 369,217 | 1.03% | estimation process |
| 2015 | 372,841 | 0.97% | estimation process |
| 2016 | 378,943 | 1.61% | estimation process |
| 2017 | 385,115 | 1.6% | estimation process |
| 2018 | 392,330 | 1.84% | estimation process |
| 2019 | 398,329 | 1.51% | estimation process |
| 2020 | 402,950 | 1.15% | estimation process |
People born in Placer County (3)
People born in Placer County, including football player and coach, lawyer George W. Gregory, artist Frank Happersberger, american writer, wife of John Fante Joyce Fante, .
List
California Other Counties (more counties)
| County Name | Population | Title |
|---|---|---|
| Los Angeles County | 9,943,046 | County in California, United States of America |
| Los Angeles | 3,970,219 | The second most populous city in the United States and the center of the Los Angeles metropolitan area. |
| San Diego County | 3,332,427 | San Diego County, founded in 1850, is one of 58 counties in the US state of California. |
| Orange County | 3,166,857 | County in California, United States |
| Riverside County | 2,489,188 | County in California, United States |
| San Bernardino County | 2,189,183 | County in California, United States |
| Santa Clara County | 1,907,105 | County in California, United States |
| Alameda County | 1,662,323 | County in California, United States |
| Sacramento County | 1,559,146 | County in California, United States |
| San Diego | 1,422,420 | The eighth most populous city in the United States and the center of the San Diego metropolitan area. |
| Laguna | 1,370,232 | A city located in Orange County, California. |
| Contra Costa County | 1,152,333 | County in California, United States |
| San Jose | 1,013,616 | The tenth most populous city in the United States and the center of the San Jose metropolitan area. |
| Fresno County | 1,000,918 | County in California, United States |
| Kern County | 901,362 | |
| San Francisco County | 866,606 | County, coextensive with the city of San Francisco, California, United States |
