Trinity County Demographics

A map of Trinity County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	12,274	11,374	77.4%	70.6%
Native American/Other	1,248	546	7.9%	3.4%
Multiracial	1,095	977	6.9%	6.1%
Hispanic	973	937	6.1%	5.8%
Black	173	66	1.1%	0.4%
Asian	97	2,212	0.6%	13.7%

Trinity County, California has an estimated population of 15,860, a slight decrease from the 16,112 recorded in the 2020 Census. The population is 77.4% White, 7.9% Native American/Other, 6.9% Multiracial, 6.1% Hispanic, 1.1% Black, and 0.6% Asian. This demographic dot map shows the population of Trinity County, with one dot drawn for each person counted by the Census, color-coded by race.

Trinity has become considerably 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 Trinity County, that probability was 47.5% in 2020 and 38.6% in the most recent ACS estimates.

Trinity County is ranked the 54th most populous county in California, out of 58 counties. Trinity County was ranked the 54th most populous county in the 2020 Census.

Trinity County's White Population

12,274 residents of Trinity County, or 77.4% of the population, identify as White. The share of White residents in Trinity County is significantly higher than in California overall, where 33.8% of the population is White. Trinity County ranks 12th statewide in terms of White residents as a share of the population, out of 58 counties.

Since the 2020 Census, Trinity County's White population has grown by an estimated 7.9%. White residents' share of Trinity County's population has increased from 70.6% to 77.4%.

Trinity County is more White than neighboring Humboldt County (69.5% White), Tehama County (61.4% White), Shasta County (75.3% White), Siskiyou County (73.3% White), and Mendocino County (61.1% White).

Trinity County's Black Population

173 residents of Trinity County, or 1.1% of the population, identify as Black. The share of Black residents in Trinity County is slightly lower than in California overall, where 5.2% of the population is Black. Trinity County ranks 56th statewide in terms of Black residents as a share of the population, out of 58 counties.

Since the 2020 Census, Trinity County's Black population has grown by an estimated 162.1%. Black residents' share of Trinity County's population has increased from 0.4% to 1.1%.

Trinity County is more Black than neighboring Tehama County (0.8% Black), Shasta County (0.8% Black), and Mendocino County (0.6% Black). Trinity County is less Black than neighboring Humboldt County (1.3% Black), and Siskiyou County (1.3% Black).

Trinity County's Asian Population

97 residents of Trinity County, or 0.6% of the population, identify as Asian. The share of Asian residents in Trinity County is considerably lower than in California overall, where 15.3% of the population is Asian. Trinity County ranks 13th statewide in terms of Asian residents as a share of the population, out of 58 counties.

Since the 2020 Census, Trinity County's Asian population has declined by an estimated 95.6%. Asian residents' share of Trinity County's population has decreased from 13.7% to 0.6%.

Trinity County is less Asian than neighboring Humboldt County (3% Asian), Tehama County (1.7% Asian), Shasta County (3.4% Asian), Siskiyou County (1.8% Asian), and Mendocino County (2.1% Asian).

Trinity County's Hispanic Population

973 residents of Trinity County, or 6.1% of the population, identify as Hispanic. The share of Hispanic residents in Trinity County is significantly lower than in California overall, where 40.2% of the population is Hispanic. Trinity County ranks 58th statewide in terms of Hispanic residents as a share of the population, out of 58 counties.

Since the 2020 Census, Trinity County's Hispanic population has grown by an estimated 3.8%. Hispanic residents' share of Trinity County's population has remained roughly unchanged at 6.1%.

Trinity County is less Hispanic than neighboring Humboldt County (14.2% Hispanic), Tehama County (29.1% Hispanic), Shasta County (11.8% Hispanic), Siskiyou County (13.5% Hispanic), and Mendocino County (27.6% Hispanic).

Trinity County's Native American/Other Population

1,248 residents of Trinity County, or 7.9% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Trinity County is higher than in California overall, where 1.2% of the population is Native American/Other. Trinity County ranks 9th statewide in terms of Native American/Other residents as a share of the population, out of 58 counties.

Since the 2020 Census, Trinity County's Native American/Other population has grown by an estimated 128.6%. Native American/Other residents' share of Trinity County's population has increased from 3.4% to 7.9%.

Trinity County is more Native American/Other than neighboring Humboldt County (4.1% Native American/Other), Tehama County (2.3% Native American/Other), Shasta County (2% Native American/Other), Siskiyou County (3.6% Native American/Other), and Mendocino County (3.3% Native American/Other).

Trinity County's Multiracial Population

1,095 residents of Trinity County, or 6.9% of the population, identify as Multiracial. The share of Multiracial residents in Trinity County is slightly higher than in California overall, where 4.4% of the population is Multiracial. Trinity County ranks 14th statewide in terms of Multiracial residents as a share of the population, out of 58 counties.

Since the 2020 Census, Trinity County's Multiracial population has grown by an estimated 12.1%. Multiracial residents' share of Trinity County's population has increased from 6.1% to 6.9%.

Trinity County is more Multiracial than neighboring Tehama County (4.7% Multiracial), Shasta County (6.7% Multiracial), Siskiyou County (6.5% Multiracial), and Mendocino County (5.2% Multiracial). Trinity County is less Multiracial than neighboring Humboldt County (8% 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.