Population
28,117
2025
−13.1% since 2020
Source: U.S. Census Bureau, Population Estimates Program (Vintage 2025), 2025. Resident population, July 1 estimate.
Lassen County had an estimated 28,117 residents in 2025, down 13.1% (4,232 fewer people) since 2020. That is slower than California as a whole (−0.4%), and the 58th fastest growth of 58 counties in California.
Data as of 2025 · updated
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In the Lassen County report
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28,117
2025
−13.1% since 2020
Source: U.S. Census Bureau, Population Estimates Program (Vintage 2025), 2025. Resident population, July 1 estimate.
−502
2025
−17.9 per 1,000 residents
−4,528 in total, 2021–2025
Source: U.S. Census Bureau, Population Estimates Program (Vintage 2025), 2025. People moving in from other U.S. counties minus people moving out.
6.7%
2025
+1.5 pts since 2019
Source: U.S. Bureau of Labor Statistics, Local Area Unemployment Statistics, 2025. Annual average unemployment rate.
17
2025
0.6 per 1,000 residents
Small base: the change swings on a few homes or people, so we don't show it.
Source: U.S. Census Bureau, Building Permits Survey, 2025. Housing units authorized by building permits in the year.
$67,403
2020–24
+18.3% since 2016–20
Source: U.S. Census Bureau, American Community Survey 5-year estimates, 2020–24. American Community Survey 5-year estimate.
3,483
2023
+0.1% since 2018
Source: U.S. Census Bureau, County Business Patterns, 2023. Paid employees of private employers in mid-March (County Business Patterns).
Net domestic migration was negative in 2025: 502 more people moved out to other U.S. counties than moved in.
Private employers had 3,483 paid employees in mid-March 2023, +0.1% since 2018 (County Business Patterns).
Unemployment averaged 6.7% in 2025, 1.5 points higher than in 2019 (before the pandemic).
Builders were authorized to start 17 new homes in 2025, or 0.6 per 1,000 residents.
Median household income was $67,403 in the 2020–24 American Community Survey, +18.3% since 2016–20.
Across the 3,107 U.S. counties with a comparable estimate, its population growth ranks 3,099th.
Part of the Susanville, CA micro area.
Email me when Lassen County gets new Census numbers: population, building permits, jobs and income. About 4 emails a year, one click to stop.
| Year | Population | Change |
|---|---|---|
| 2025 | 28,117 | −476 |
| 2024 | 28,593 | −101 |
| 2023 | 28,694 | −1,575 |
| 2022 | 30,269 | −1,674 |
| 2021 | 31,943 | −406 |
| 2020 | 32,349 | – |
Census Bureau population estimates, July 1 of each year.
Lassen County lost 4,232 people since 2020; the biggest drag was domestic migration (−4,528).
| Component | 2025 | 2020–25 | Share |
|---|---|---|---|
| Natural changebirths minus deaths | −21 | −111 | |
| International migrationfrom and to other countries | +51 | +224 | |
| Domestic migrationfrom and to other U.S. counties | −502 | −4,528 | |
| Census adjustmentbalancing residual | −4 | +183 | |
| Total change | −476 | −4,232 |
Census Bureau population estimates, components of change, each year July 1 to June 30. The components add up to the change in the estimate; the Census adjustment is the small balancing figure the Bureau publishes.
| Measure | In California | Among U.S. counties |
|---|---|---|
| Population growth | 58th of 58 | 3,099th of 3,107 |
| Net domestic migration per 1,000 residents | 56th of 58 | 3,041st of 3,108 |
| Private-sector job growth | 49th of 58 | 1,856th of 3,092 |
| Median household income | 46th of 58 | 1,377th of 3,107 |
| Lowest unemployment rate | 38th of 58 | 2,983rd of 3,108 |
| New homes permitted per 1,000 residents | 53rd of 58 | 2,346th of 3,005 |
1st = highest (lowest for unemployment). Counties are ranked only against others with a figure for the same period.
The County Growth and Demographics Report for Lassen County, CA as a PDF, from federal data: population and migration, housing and rents, permits, private employers and jobs, unemployment, ranks in the state and the country, and neighbouring counties, with a source next to every number. Pay once, no subscription.
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Lassen County lost population faster than all 5 of its neighbouring counties (−13.1%, 2020–25).
2 of its 5 neighbouring counties had a higher median household income than Lassen County's $67,403 (2020–24).
| County | Population2025 | Population change2020–25 | Net domestic migration per 1,000 residents2025 | Homes permitted per 1,000 residents2025 | Median household income2020–24 |
|---|---|---|---|---|---|
| Lassen County, CA This county | 28,117 | −13.1% | −17.9 | 0.6 | $67,403 |
| Plumas County, CA | 18,583 | −5.9% | −4.2 | 2.4 | $66,031 |
| Sierra County, CA | 3,098 | −4.0% | 1.3 | 0.3 | $63,355 |
| Washoe County, NV | 509,386 | +4.4% | 4.2 | 5.0 | $88,096 |
| Modoc County, CA | 8,426 | −2.9% | −5.8 | 1.1 | $59,455 |
| Shasta County, CA | 181,648 | −0.3% | 3.0 | 1.4 | $72,636 |
Census Bureau population estimates and building permits, American Community Survey 5-year income. Rates per 1,000 residents. – means no figure, or a base too small for a change or rate (it would swing on a few people). A figure from another period shows its year and is left out of the comparison.
No. Its population fell 13.1% between 2020 and 2025, about 4,232 fewer people (Census Bureau population estimates). California as a whole changed −0.4% over the same years. That ranks 58th of 58 counties in California for population growth.
On net, none in 2025: about 502 more people moved out to other U.S. counties than moved in (Census Bureau net domestic migration estimate).
It averaged 6.7% in 2025 (BLS Local Area Unemployment Statistics, annual average).
About 28,117 people, according to the U.S. Census Bureau's population estimate for July 1, 2025.
Private employers there had 3,483 paid employees in mid-March 2023, +0.1% since 2018 (Census Bureau County Business Patterns; government jobs and the self-employed are not counted).
Map, parcel and listing layers cover North and South Carolina only for now. This page and the other California county pages carry the public federal growth figures.
Email me when Lassen County gets new Census numbers: population, building permits, jobs and income. About 4 emails a year, one click to stop.
Each number shows its own period. Changes compare the latest period with five years earlier (or the earliest period available). Beacon CRE last refreshed these figures on 2026-11-05. Figures come from public federal statistics and are informational only, not investment advice. Check the source before relying on a number. Methodology: how we compute every number. More on every layer: data sources and licences.
Jobs outside North and South Carolina use County Business Patterns (paid private-sector employees in mid-March); wages and government jobs are not included.