Placer County Flag

Placer County

State:
California
County Seat:
Auburn

Placer County's estimated 2025 population is 443,045 with a growth rate of 2.13% in the past year according to the most recent United States census data. Placer County is the 21st largest county in California. The 2010 population was 350,007 and has seen a growth of 26.58% since that time.

443,045
Total Population
315
Population Density (mi²)
21
Population Rank (State)
9.2K 2.13%
Annual Population Growth

Placer County Population

Demographics

Economics and Income Statistics

Sources

  1. City and Town Population Totals: 2020-2024
  2. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  3. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  4. American Community Survey (2009 - 2013)
  5. Census QuickFacts
  6. Historical Populations of States and Counties (1790 - 1990)