Lassen County, California Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 47th-largest in California
The population of Lassen County, California is 31,177 as of the 2023 American Community Survey, making it the 47th-largest county in California. The median household income is $64,395, the median home value is $259,500, and the median age is 37.8.
The population of Lassen County has declined 18.6% since 2010 (34,828 → 28,340), a -1.46% annualized rate.
31,177
Population
-1.46%
Annual growth
7
People / sq mi
$64,395
Median Income
$259,500
Median Home Value
Lassen County covers 4,541 sq mi of land at 6.9 people per square mile.
About Lassen County, CA
Educational attainment is the headline number in Lassen County: 13.2% of adults 25 and older have a four-year degree. With 31,177 residents, Lassen County is a county in California. It ranks #47 among counties in California by population.
Median household income is $64,395, below the US median of $78,538. About 10.1% of residents live below the federal poverty level, below the national 12.4%. Home values run above average at $259,500, with typical rent around $1,043.
Four-year-degree attainment is near the bottom of the range for US counties, 13.2%, below the national 35.0%. Around 6.7% of workers work from home, below the national 14.0%, and the average commute runs about 19 minutes each way.
Lassen County Population History (2010-2024)
The county of Lassen County had a population of 34,828 in 2010 and 28,340 in 2024, a -18.6% growth over 14 years. The peak was 34,828 in 2010. Average annual growth rate: -1.43%.
28,340
Population (2024)
34,828
Population (2010)
34,828
Peak (2010)
-1.43%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 34,828 |
| 2011 | 34,235 |
| 2012 | 33,622 |
| 2013 | 32,128 |
| 2014 | 31,664 |
| 2015 | 31,256 |
| 2016 | 30,715 |
| 2017 | 30,919 |
| 2018 | 30,658 |
| 2019 | 30,694 |
| 2020 | 32,319 |
| 2021 | 31,884 |
| 2022 | 30,401 |
| 2023 | 28,838 |
| 2024 | 28,340 |
Race & Ethnicity
| White | 68.9% |
| Black or African American | 8.3% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 5.1% |
| Two or More Races | 0.1% |
Age & Sex
37.8
Median Age
37.9%
Female
62.1%
Male
15.9%
Age 65+
Age Distribution
Children (under 15): 14.7% · Seniors (65+): 15.9%
Income & Poverty
| Median household income | $64,395$-31,939 vs state |
| Mean household income | $81,066 |
| Per-capita income | $25,852 |
| Poverty rate | 10.1%+1.7% vs state |
| Unemployment rate | 3.0% |
| Employment-to-population | 36.5% |
Top Industries by Employment
The largest employment sector in Lassen County is public administration, accounting for 28.0% of workers.
How residents commute
0.4%
Drive alone
2.7%
Carpool
76.0%
Public transit
6.7%
Work from home
19.0 min
Avg commute
Housing
$259,500$-435,900 vs state
Median home value
$1,043
Median rent
68.2%
Homeownership rate
12,232
Total housing units
74.1%
Occupied
25.9%
Vacant
31.8%
Renter-occupied
Social & access
93.3%
With health insurance
92.4%
With broadband internet
22.1%
Foreign-born
7.9%
Veterans (18+)
18.1%
With a disability
81.9%
Speak language other than English at home
Education
79.1%
High School+
13.2%
Bachelor's+
Largest cities in California
Other counties in California
Part of California
Metro areas in California
County rankings
Frequently Asked Questions
Lassen County, California has a population of 31,177 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 47th-largest county in California. Population density is 7 people per square mile.
The population of Lassen County has declined 18.6% since 2010 (34,828 → 28,340), a -1.46% annualized rate.
The median household income in Lassen County, California is $64,395, with mean (average) household income of $81,066 and per-capita income of $25,852. 10.1% of residents live below the federal poverty level.
In Lassen County, the largest racial and ethnic groups are White (68.9%), Black or African American (8.3%), Hispanic or Latino (5.1%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Lassen County, California is 37.8 years. Residents are 37.9% female and 62.1% male.
The median home value in Lassen County is $259,500 and median monthly rent is $1,043. 68.2% of occupied housing units are owner-occupied. The county has 12,232 total housing units, 25.9% of which are vacant.
The largest employment sector in Lassen County, California is public administration, employing 28.0% of workers. The unemployment rate is 3.0%.
Los Angeles is among the largest cities associated with Lassen County, California, with a population of 3,857,897.
Lassen County, CA Climate
Lassen County, CA has an average annual temperature of 5.8°C (42°F) and receives about 524 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
5.8°C
Avg Temp
524
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | -3° / 27° | 66 mm |
| February | -1° / 29° | 60 mm |
| March | 1° / 33° | 62 mm |
| April | 3° / 38° | 38 mm |
| May | 8° / 46° | 40 mm |
| June | 12° / 53° | 30 mm |
| July | 16° / 61° | 11 mm |
| August | 16° / 61° | 15 mm |
| September | 13° / 55° | 23 mm |
| October | 7° / 45° | 41 mm |
| November | 1° / 34° | 70 mm |
| December | -2° / 28° | 68 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Lassen County, CA
The most comfortable months to visit Lassen County, CA are typically July, August and September, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 26°C high). The coldest is January (near -8°C low). November is usually the wettest month.
Where to stay near Lassen County
Visiting or relocating to Lassen County, CA? Compare hotels and short-term rentals across the county — live availability and prices.
Top-rated places to stay near Lassen County
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a move to Lassen County?
Get relocation and cost-of-living insights for Lassen County, CA by email. No spam, unsubscribe anytime.
More from California
Population 9,848,406
Population 3,282,782
Population 3,164,063
Population 2,449,909
Full rankings of California counties
Statewide data for California
Population, race, income, age, and trends across California
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.