Lassen County Population

1870–2026

27,641

2026 projection

14.6% since 2020 (decrease)

05K10K15K20K25K30K35K18801900192019401960198020002020

Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.

Use the left and right arrow keys to inspect population observations.

Population by year

Population estimates for Lassen County. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
202627,641-4761.69%
202528,117-4761.66%
202428,593-1010.35%
202328,694-1,5755.20%
202230,269-1,6745.24%
202131,943-4061.26%
202032,349+1,6555.39%
201930,694+360.12%
201830,658-2610.84%
201730,919+2040.66%

Showing 10 of 30 years.

Lassen County Demographics

38.3median age

Median age

Female42.8 yrs
Male36.9 yrs

Adults

24,745
5,012 seniors (65+) · 20% of adults19,733 other adults

Sex

Female 38.2% · 11,594Male 61.8% · 18,762

Population by age

MaleFemale85+ years, male: 23585+ years, female: 23180–84 years, male: 27480–84 years, female: 27975–79 years, male: 38875–79 years, female: 49670–74 years, male: 52570–74 years, female: 73065–69 years, male: 1,05265–69 years, female: 80260–64 years, male: 69360–64 years, female: 79855–59 years, male: 1,19655–59 years, female: 74550–54 years, male: 1,16050–54 years, female: 70645–49 years, male: 1,26845–49 years, female: 53740–44 years, male: 1,57840–44 years, female: 84335–39 years, male: 1,78635–39 years, female: 64630–34 years, male: 2,09330–34 years, female: 67625–29 years, male: 1,94525–29 years, female: 66320–24 years, male: 1,37720–24 years, female: 44315–19 years, male: 89315–19 years, female: 75210–14 years, male: 81110–14 years, female: 6915–9 years, male: 8075–9 years, female: 8480–4 years, male: 6810–4 years, female: 70885+80–8475–7970–7465–6960–6455–5950–5445–4940–4435–3930–3425–2920–2415–1910–145–90–41K1K

Hover or tap an age group to see exact counts. Use the up and down arrow keys to inspect age groups.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101

Race and ethnicity

Tap a square or a group below to highlight it.

Each square is about 1% of residents (roughly 304 people).

Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002

Lassen County Income

$67,403median household income

Median household income

$67,403

Half of households earn more, half earn less

Median earnings

$48,117

Typical yearly pay for a worker 25 or older.

Poverty rate

14%

About 1 in 7 residents

U.S. Census Bureau, 2024 ACS 5-year estimates · Tables S1901, S1501, S1701

Lassen County Marital Status

41% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married41%38%46%
Never married40%47%26%
Divorced11%9%14%
Widowed5%3%10%
Separated4%4%5%

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201

Sources

8 sources, all from the U.S. Census Bureau

Population

American Community Survey, 2024 5-year