Glenn County Demographics

A map of Glenn County's Population by Race

Glenn County, California has an estimated population of 28,494, a slight decrease from the 28,917 recorded in the 2020 Census. The population is 47.5% White, 45.0% Hispanic, 3.4% Multiracial, 3.0% Asian, 0.9% Native American/Other, and 0.2% Black. This demographic dot map shows the population of Glenn County, with one dot drawn for each person counted by the Census, color-coded by race.

Glenn has become slightly less racially diverse since the 2020 Census. It is considerably less diverse than California overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Glenn County, that probability was 57.9% in 2020 and 57.0% in the most recent ACS estimates.

Glenn County is ranked the 48th most populous county in California, out of 58 counties. Glenn County was ranked the 48th most populous county in the 2020 Census.

Glenn County's White Population

13,525 residents of Glenn County, or 47.5% of the population, identify as White. The share of White residents in Glenn County is considerably higher than in California overall, where 33.8% of the population is White. Glenn County ranks 30th statewide in terms of White residents as a share of the population, out of 58 counties.

Since the 2020 Census, Glenn County's White population has declined by an estimated 2.7%. White residents' share of Glenn County's population has decreased from 48.1% to 47.5%.

Glenn County is more White than neighboring Colusa County (29.8% White), and Sutter County (40.7% White). Glenn County is less White than neighboring Tehama County (61.4% White), Lake County (64% White), and Butte County (65.1% White).

Glenn County's Black Population

62 residents of Glenn County, or 0.2% of the population, identify as Black. The share of Black residents in Glenn County is slightly lower than in California overall, where 5.2% of the population is Black. Glenn County ranks 54th statewide in terms of Black residents as a share of the population, out of 58 counties.

Since the 2020 Census, Glenn County's Black population has declined by an estimated 55.7%. Black residents' share of Glenn County's population has remained roughly unchanged at 0.2%.

Glenn County is less Black than neighboring Colusa County (1.5% Black), Tehama County (0.8% Black), Lake County (2% Black), Butte County (1.7% Black), and Sutter County (1.6% Black).

Glenn County's Asian Population

856 residents of Glenn County, or 3.0% of the population, identify as Asian. The share of Asian residents in Glenn County is considerably lower than in California overall, where 15.3% of the population is Asian. Glenn County ranks 40th statewide in terms of Asian residents as a share of the population, out of 58 counties.

Since the 2020 Census, Glenn County's Asian population has grown by an estimated 36.7%. Asian residents' share of Glenn County's population has increased from 2.2% to 3.0%.

Glenn County is more Asian than neighboring Colusa County (0.9% Asian), Tehama County (1.7% Asian), and Lake County (1.4% Asian). Glenn County is less Asian than neighboring Butte County (5.5% Asian), and Sutter County (17.5% Asian).

Glenn County's Hispanic Population

12,820 residents of Glenn County, or 45.0% of the population, identify as Hispanic. The share of Hispanic residents in Glenn County is slightly higher than in California overall, where 40.2% of the population is Hispanic. Glenn County ranks 16th statewide in terms of Hispanic residents as a share of the population, out of 58 counties.

Since the 2020 Census, Glenn County's Hispanic population has grown by an estimated 2.2%. Hispanic residents' share of Glenn County's population has increased from 43.4% to 45.0%.

Glenn County is more Hispanic than neighboring Tehama County (29.1% Hispanic), Lake County (24.6% Hispanic), Butte County (20% Hispanic), and Sutter County (32.9% Hispanic). Glenn County is less Hispanic than neighboring Colusa County (62.9% Hispanic).

Glenn County's Native American/Other Population

252 residents of Glenn County, or 0.9% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Glenn County is comparable to the share in California overall, where 1.2% of the population is Native American/Other. Glenn County ranks 14th statewide in terms of Native American/Other residents as a share of the population, out of 58 counties.

Since the 2020 Census, Glenn County's Native American/Other population has declined by an estimated 64.7%. Native American/Other residents' share of Glenn County's population has decreased from 2.5% to 0.9%.

Glenn County is less Native American/Other than neighboring Colusa County (2.4% Native American/Other), Tehama County (2.3% Native American/Other), Lake County (2.3% Native American/Other), Butte County (1.7% Native American/Other), and Sutter County (2.3% Native American/Other).

Glenn County's Multiracial Population

979 residents of Glenn County, or 3.4% of the population, identify as Multiracial. The share of Multiracial residents in Glenn County is comparable to the share in California overall, where 4.4% of the population is Multiracial. Glenn County ranks 46th statewide in terms of Multiracial residents as a share of the population, out of 58 counties.

Since the 2020 Census, Glenn County's Multiracial population has declined by an estimated 2.0%. Multiracial residents' share of Glenn County's population has remained roughly unchanged at 3.4%.

Glenn County is more Multiracial than neighboring Colusa County (2.5% Multiracial). Glenn County is less Multiracial than neighboring Tehama County (4.7% Multiracial), Lake County (5.6% Multiracial), Butte County (5.9% Multiracial), and Sutter County (5.1% Multiracial).

Sources: Most recent population estimates are from the 2020-2024 American Community Survey 5-Year Estimates. 2020 population counts and map data are from 2020 Census State Redistricting Data. Geographic data are from Census TIGER/Line Shapefiles.