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
Housing cost is the defining feature of Placer County: the median home is valued at $658,800. Placer County is a county in California with a population of 412,435. It ranks #22 among counties in California by population.
Earnings sit at the high end: a median household income of $114,678, above the US median of $78,538. Poverty is among the lowest of comparable US counties, at 4.6% — below the national 12.4%. Housing is expensive: the median home is worth $658,800, with typical rent around $1,991.
Placer County is among the best-educated US counties: 42.9% of adults 25 and older hold a bachelor’s degree, above the national 35.0%. Working from home is common here: 20.2% of workers do so, above the national 14.0%, and the average commute runs about 28 minutes each way.
High housing values reframe the income picture in Placer County — even solid earnings stretch less against home prices and rents at this level.
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.