Total Population in Placer County, CA
ACS 2024 5-Year Estimates
419,156
Rank #177/3,222 · #22 in CA
95th
Placer 419,156
CA 39M -98.9%
US 330M
Total Population Trend
Rankings →Percentile Rank Over Time
Year-over-Year Population Change
National Distribution
How Placer County's total population of 419,156 compares to all 3,222 U.S. counties. Values range from 33 to 9,808,667.
Distribution of Total Population Across All Counties
Ranking Context
Counties ranked closest to Placer County for total population.
Nearby Rankings
Full ranking →| #174 | Clackamas County, OR | 423,975 |
| #175 | Richland County, SC | 422,117 |
| #176 | Charleston County, SC | 420,264 |
| #177 | Placer County, CA | 419,156 |
| #178 | St. Charles County, MO | 414,535 |
| #179 | Lake County, FL | 412,924 |
| #180 | Mobile County, AL | 412,590 |
About Total Population
Placer County, California has a total population of 419,156, ranking #177 of 3,222 counties nationwide — 99.9% below the national value of 330M. Within California, it ranks #22 of 58. This places it in the 95th percentile nationally.
Total population count from the American Community Survey. Source: U.S. Census Bureau, American Community Survey 2024 5-Year Estimates. All values are estimates derived from survey samples and are subject to margin of error. For more information, see our methodology.