Placer County, California

Placer County is a county in California with an estimated population of 423,561 in 2023. 6 cities, towns and Census places in it are indexed here.

Largest places in Placer County

About Placer County

Placer County is one of the counties of California. County governments in California handle local services such as courts, property records and elections; cities and towns inside the county run their own municipal services. Population figures come from the Census Bureau's Vintage 2023 estimates, which are updated annually.