Placer County, California Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 22nd-largest in California
The population of Placer County, California is 412,435 as of the 2023 American Community Survey, making it the 22nd-largest county in California. The median household income is $114,678, the median home value is $658,800, and the median age is 42.4.
The population of Placer County has grown 23.9% since 2010 (350,007 → 433,822), a +1.55% annualized rate.
412,435
Population
+1.55%
Annual growth
293
People / sq mi
$114,678
Median Income
$658,800
Median Home Value
Placer County covers 1,407 sq mi of land at 293.1 people per square mile.
About Placer County, CA
Placer County is a county in California with a population of 412,435. It ranks #22 among counties in California by population. The median age is 42.4, older than the national median. The population is 49.2% male and 50.8% female.
The median household income in Placer County is $114,678, above the US median of $74,580. 4.6% of residents live below the federal poverty level. Home values sit at a median of $658,800, with monthly rent averaging $1,991. The homeownership rate of 74.3% is higher than the national rate of 64.8%.
Educational attainment in Placer County reflects 42.9% of adults 25 and older holding a bachelor's degree or higher, above the national average of 34.3%. Roughly 20.2% of workers primarily work from home, noticeably above the national work-from-home rate of 14.2%. The average commute is 27.7 minutes each way.
Placer County Population History (2010-2024)
The county of Placer County had a population of 350,007 in 2010 and 433,822 in 2024, a 23.9% growth over 14 years. The peak was 433,822 in 2024. Average annual growth rate: 1.55%.
433,822
Population (2024)
350,007
Population (2010)
433,822
Peak (2024)
1.55%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 350,007 |
| 2011 | 356,323 |
| 2012 | 360,269 |
| 2013 | 365,415 |
| 2014 | 369,241 |
| 2015 | 372,870 |
| 2016 | 379,046 |
| 2017 | 385,348 |
| 2018 | 392,735 |
| 2019 | 398,918 |
| 2020 | 405,951 |
| 2021 | 412,968 |
| 2022 | 418,439 |
| 2023 | 424,599 |
| 2024 | 433,822 |
Race & Ethnicity
| White | 72.5% |
| Black or African American | 1.7% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 2.4% |
| Two or More Races | 0.0% |
Age & Sex
42.4
Median Age
50.8%
Female
49.2%
Male
20.2%
Age 65+
Age Distribution
Children (under 15): 17.8% · Seniors (65+): 20.2%
Income & Poverty
| Median household income | $114,678+$18,344 vs state |
| Mean household income | $147,894 |
| Per-capita income | $56,902 |
| Poverty rate | 4.6%-3.8% vs state |
| Unemployment rate | 2.7% |
| Employment-to-population | 58.2% |
Top Industries by Employment
The largest employment sector in Placer County is professional & business services, accounting for 23.3% of workers.
How residents commute
0.6%
Drive alone
1.3%
Carpool
69.9%
Public transit
20.2%
Work from home
27.7 min
Avg commute
Housing
$658,800$-36,600 vs state
Median home value
$1,991
Median rent
74.3%
Homeownership rate
176,233
Total housing units
88.2%
Occupied
11.8%
Vacant
25.7%
Renter-occupied
Social & access
96.6%
With health insurance
97.5%
With broadband internet
21.1%
Foreign-born
7.7%
Veterans (18+)
11.4%
With a disability
83.8%
Speak language other than English at home
Education
94.9%
High School+
42.9%
Bachelor's+
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Common questions about Placer County, CA
Frequently Asked Questions
Placer County, California has a population of 412,435 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 22nd-largest county in California. Population density is 293 people per square mile.
The population of Placer County has grown 23.9% since 2010 (350,007 → 433,822), a +1.55% annualized rate.
The median household income in Placer County, California is $114,678, with mean (average) household income of $147,894 and per-capita income of $56,902. 4.6% of residents live below the federal poverty level.
In Placer County, the largest racial and ethnic groups are White (72.5%), Hispanic or Latino (2.4%), Black or African American (1.7%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Placer County, California is 42.4 years. Residents are 50.8% female and 49.2% male.
The median home value in Placer County is $658,800 and median monthly rent is $1,991. 74.3% of occupied housing units are owner-occupied. The county has 176,233 total housing units, 11.8% of which are vacant.
The largest employment sector in Placer County, California is professional, scientific, and management services, employing 23.3% of workers. The unemployment rate is 2.7%.
Los Angeles is among the largest cities associated with Placer County, California, with a population of 3,857,897.
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.