Demographics of Glenn County, California

Glenn County, California had 28,141 people on July 1, 2025, by the Census Bureau’s estimate: −748 since July 2020. Age, income, poverty, housing and origin below come from the American Community Survey, averaged over 2020–2024, each with its margin of error.

Glenn County, in four figures

28,141
Population: July 1, 2025, Vintage 2025 estimate.; −2.6%
Change since July 2020: −748 people.; 36.2 ±0.6
Median age: ACS 2020–⁠2024.; $67,139 ±$5,144
Median household income: ACS 2020–⁠2024, in 2024 dollars.

Population, year by year

July 1 estimates from the Census Bureau’s Vintage 2025. Each year's change is births less deaths, net moves from abroad and net moves from elsewhere in the country, with the Bureau's small residual. The 2020 row's components run 3 months, from the April census to July 1.

Glenn County, California's population shrank 2.6% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Glenn County, California's resident population and the nation's, each year of the Census Bureau's Vintage 2025, as a share of its July 2020 level (= 100).

U.S. Census Bureau — Census Bureau population estimates — counties and Puerto Rico municipios, with components of change

About this chart

The figures

Glenn County, California's population shrank 2.6% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Glenn County, California's resident population and the nation's, each year of the Census Bureau's Vintage 2025, as a share of its July 2020 level (= 100).
July 1	Population	Index	United States
2020	28,889	100.0	100.0
2021	28,689	99.3	100.2
2022	28,363	98.2	100.7
2023	28,168	97.5	101.6
2024	28,320	98.0	102.5
2025	28,141	97.4	103.1

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Population of Glenn County, California on July 1 of each year, Vintage 2025
July 1	Population	Change	Births less deaths	From abroad	From elsewhere in the country
2020	28,889	−21	+35	0	−53
2021	28,689	−200	+64	+10	−274
2022	28,363	−326	+24	+44	−408
2023	28,168	−195	+3	+100	−298
2024	28,320	+152	+16	+148	−10
2025	28,141	−179	+17	+17	−212

Age, 2020–2024

The median age is 36.2 ±0.6: for men 35.5 ±0.6 and for women 37.3 ±1.2. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Glenn County by age, ACS 2020–2024
Age	People	Share	California	United States
Under 5	1,897 ±89	6.7% ±0.3	5.5% ±<0.1	5.6% ±<0.1
5 to 17	5,725 ±402	20.1% ±1.4	16.5% ±<0.1	16.3% ±<0.1
18 to 24	2,494 ±270	8.8% ±0.9	9.1% ±<0.1	9.1% ±<0.1
25 to 44	7,080 ±382	24.8% ±1.3	28.7% ±<0.1	26.9% ±<0.1
45 to 64	6,405 ±323	22.5% ±1.1	24.6% ±<0.1	24.8% ±<0.1
65 and over	4,893 ±379	17.2% ±1.3	15.7% ±<0.1	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $67,139 ±$5,144, and income per person $30,361 ±$1,886, in 2024 dollars. The median is $99,122 ±$310 in California and $80,734 ±$166 in the United States.

Households by income

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Households in Glenn County by income, ACS 2020–2024
Household income	Households	Share	California	United States
Under $25,000	1,722 ±306	17.6% ±3.1	12.5% ±0.1	14.6% ±<0.1
$25,000 to $49,999	2,088 ±327	21.3% ±3.3	13.3% ±0.1	16.7% ±<0.1
$50,000 to $74,999	1,670 ±369	17.0% ±3.7	13.0% ±0.1	15.5% ±<0.1
$75,000 to $99,999	1,209 ±228	12.3% ±2.3	11.6% ±0.1	12.6% ±<0.1
$100,000 to $149,999	1,759 ±302	17.9% ±3.0	17.8% ±0.1	17.5% ±<0.1
$150,000 to $199,999	839 ±214	8.6% ±2.2	11.3% ±0.1	9.6% ±<0.1
$200,000 or more	523 ±119	5.3% ±1.2	20.5% ±0.1	13.4% ±0.1

Poverty by age

The poverty rate is the share of people whose family income is below the federal threshold for their family’s size, of everyone for whom the Bureau determines it (B17020).

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Poverty rate in Glenn County by age, ACS 2020–2024
Age	Below poverty	Rate	California	United States
All ages	4,514 ±883	16.0% ±3.1	12.0% ±0.1	12.5% ±0.1
Under 18	1,663 ±376	21.9% ±4.6	15.0% ±0.1	16.1% ±0.1
18 to 59	2,019 ±416	14.5% ±2.9	11.0% ±0.1	11.6% ±0.1
60 and over	832 ±216	12.2% ±3.1	11.5% ±0.1	11.0% ±<0.1

Housing, 2020–2024

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Housing in Glenn County, ACS 2020–2024
Measure	Glenn County	California	United States
Housing units	11,073 ±30	14,644,735 ±1,665	143,775,355 ±10,234
Occupied	88.6% ±2.6	92.5% ±0.1	89.9% ±0.1
Vacant	11.4% ±2.6	7.5% ±0.1	10.1% ±0.1
Owner occupied	61.2% ±3.9	55.9% ±0.3	65.2% ±0.3
Renter occupied	38.8% ±4.0	44.1% ±0.2	34.8% ±0.1
Median home value	$352,400 ±$16,119	$734,700 ±$1,307	$332,700 ±$236
Median gross rent	$1,120 ±$85	$2,036 ±$5	$1,413 ±$2
Median year built	1977 ±2	1976 ±1	1980 ±1

Occupied and vacant are shares of all housing units; owner and renter occupied are shares of occupied units. Value and rent are medians in 2024 dollars.

Origin and place of birth, 2020–2024

Hispanic or Latino origin is not a race in the Census Bureau’s tables. Here the people of Hispanic origin, of any race, are one row, and everyone else is counted by race alone (B03002), so the rows add to the whole.

Hispanic origin and race

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People in Glenn County by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	California	United States
Hispanic or Latino	12,820 ±0	45.0% ±<0.1	40.2% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	13,525 ±82	47.5% ±0.3	33.8% ±<0.1	57.4% ±<0.1
Black alone, not Hispanic	1 to 123	< 0.1% to 0.4%	5.2% ±<0.1	11.9% ±<0.1
Asian alone, not Hispanic	856 ±241	3.0% ±0.8	15.3% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	199 ±69	0.7% ±0.2	0.3% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0 to 25	0% to 0.1%	0.3% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	12 to 94	< 0.1% to 0.3%	0.6% ±<0.1	0.6% ±<0.1
Two or more races, not Hispanic	979 ±262	3.4% ±0.9	4.4% ±<0.1	4.3% ±<0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Place of birth and citizenship

“Born a citizen outside the states” counts people born in Puerto Rico, the island areas, or abroad to American parents. Naturalized citizens and those who are not citizens together make up the people born abroad (B05002).

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People in Glenn County by place of birth and citizenship, ACS 2020–2024
Born	People	Share	California	United States
Born in the state	19,629 ±692	68.9% ±2.4	56.5% ±0.1	57.3% ±<0.1
Born in another state	3,319 ±409	11.6% ±1.4	15.0% ±0.1	26.9% ±<0.1
Born a citizen outside the states	78 to 416	0.3% to 1.5%	1.5% ±<0.1	1.7% ±<0.1
Born abroad	5,299 ±512	18.6% ±1.8	27.0% ±0.1	14.1% ±<0.1
Naturalized citizens	1,883 ±312	6.6% ±1.1	14.7% ±0.1	7.4% ±<0.1
Not citizens	3,416 ±577	12.0% ±2.0	12.3% ±0.1	6.8% ±<0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Glenn County among the counties of California

47th of 58 by population, July 2025. Every one is listed on the California page.

Counties of California near Glenn County in population, July 2025
County	July 2025	Change since 2020
Tehama County	64,665	−1.7%
Tuolumne County	53,160	−4.0%
Calaveras County	46,605	+2.8%
Siskiyou County	42,013	−4.5%
Amador County	41,876	+3.2%
Glenn County	28,141	−2.6%
Lassen County	28,117	−13.1%
Del Norte County	26,410	−4.4%
Colusa County	21,836	−0.1%
Plumas County	18,583	−5.9%
Inyo County	18,158	−4.4%

Elsewhere on the site

Sources

Census Bureau population estimates — counties and Puerto Rico municipios, with components of change — U.S. Census Bureau · U.S. Government work · retrieved September 25, 2026
American Community Survey 5-year estimates — table-based Summary File · U.S. Government work

Data retrieved September 25, 2026