Placer County
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Placer County is a county located in California, situated in the northern part of the state's central valley and Sierra Nevada region. It is significant as a major population and economic center in Northern California, with a rich history tied to the Gold Rush era.
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Gold specimen from the Eagle's Nest Mine, a source of specimen gold in Placer County
Placer County (/ˈplæsər/ PLASS-ər), officially the County of Placer, is located in the U.S. state of California. As of the 2020 United States census, the population was 404,739. The county seat is Auburn.