Placer County's 2026 population is estimated at 452,268, reflecting a 2.08% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Placer County is the 20th largest county in California. The 2010 population was 350,007 and has grown 29.22% since 2010.
Data after 2023 is projected based on recent change
Overall: 42.5 years
Female: 43.7 years
Male: 41.1 years
There are 327,869 adults, (85,822 of whom are seniors) in Placer County.
Female: 212,935 (50.8%)
Male: 206,221 (49.2%)
The racial composition of Placer County includes 69.11% White, 9.21% Asian, 5% other race, and smaller percentages for Black or African American, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 289,678 | 69.11% |
| Two or more races | 60,191 | 14.36% |
| Asian | 38,592 | 9.21% |
| Other race | 20,942 | 5% |
| Black or African American | 6,924 | 1.65% |
| Native American | 2,075 | 0.5% |
| Native Hawaiian or Pacific Islander | 754 | 0.18% |
Placer County 's average per capita income is $73,073. Household income levels show a median of $115,998. The poverty rate stands at 6.76%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $155,488 | $190,154 |
| Families | $138,699 | $173,103 |
| Households | $115,998 | $150,239 |
| Non Families | $59,918 | $87,328 |
Average Income
Median Household Income
Poverty Rate