Carbon County Demographics

A map of Carbon County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	10,020	9,603	90.1%	91.7%
Multiracial	503	433	4.5%	4.1%
Hispanic	337	261	3.0%	2.5%
Native American/Other	222	142	2.0%	1.4%
Black	31	13	0.3%	0.1%
Asian	3	21	0.0%	0.2%

Carbon County, Montana has an estimated population of 11,116, an increase from the 10,473 recorded in the 2020 Census. The population is 90.1% White, 4.5% Multiracial, 3.0% Hispanic, 2.0% Native American/Other, 0.3% Black, and 0.0% Asian. This demographic dot map shows the population of Carbon County, with one dot drawn for each person counted by the Census, color-coded by race.

Carbon has become more racially diverse since the 2020 Census. It is considerably less diverse than Montana overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Carbon County, that probability was 15.7% in 2020 and 18.4% in the most recent ACS estimates.

Carbon County is ranked the 20th most populous county in Montana, out of 56 counties. Carbon County was ranked the 21st most populous county in the 2020 Census.

Carbon County's White Population

10,020 residents of Carbon County, or 90.1% of the population, identify as White. The share of White residents in Carbon County is higher than in Montana overall, where 83.6% of the population is White. Carbon County ranks 12th statewide in terms of White residents as a share of the population, out of 56 counties.

Since the 2020 Census, Carbon County's White population has grown by an estimated 4.3%. White residents' share of Carbon County's population has decreased from 91.7% to 90.1%.

Carbon County is more White than neighboring Park County (86.9% White), and Yellowstone County (83.4% White). Carbon County is less White than neighboring Stillwater County (92% White), Sweet Grass County (90.8% White), and Golden Valley County (90.3% White).

Carbon County's Black Population

31 residents of Carbon County, or 0.3% of the population, identify as Black. The share of Black residents in Carbon County is comparable to the share in Montana overall, where 0.4% of the population is Black. Carbon County ranks 44th statewide in terms of Black residents as a share of the population, out of 56 counties.

Since the 2020 Census, Carbon County's Black population has grown by an estimated 138.5%. Black residents' share of Carbon County's population has remained roughly unchanged at 0.3%.

Carbon County is more Black than neighboring Stillwater County (0% Black), and Park County (0.2% Black). Carbon County is less Black than neighboring Yellowstone County (0.4% Black), Sweet Grass County (1% Black), and Golden Valley County (0.8% Black).

Carbon County's Asian Population

3 residents of Carbon County, or 0.0% of the population, identify as Asian. The share of Asian residents in Carbon County is comparable to the share in Montana overall, where 0.8% of the population is Asian. Carbon County ranks 44th statewide in terms of Asian residents as a share of the population, out of 56 counties.

Since the 2020 Census, Carbon County's Asian population has declined by an estimated 85.7%. Asian residents' share of Carbon County's population has remained roughly unchanged at 0.0%.

Carbon County is less Asian than neighboring Stillwater County (0.4% Asian), Park County (0.4% Asian), Yellowstone County (0.7% Asian), and Sweet Grass County (0.2% Asian).

Carbon County's Hispanic Population

337 residents of Carbon County, or 3.0% of the population, identify as Hispanic. The share of Hispanic residents in Carbon County is comparable to the share in Montana overall, where 4.6% of the population is Hispanic. Carbon County ranks 38th statewide in terms of Hispanic residents as a share of the population, out of 56 counties.

Since the 2020 Census, Carbon County's Hispanic population has grown by an estimated 29.1%. Hispanic residents' share of Carbon County's population has increased from 2.5% to 3.0%.

Carbon County is more Hispanic than neighboring Sweet Grass County (1.2% Hispanic). Carbon County is less Hispanic than neighboring Stillwater County (3.5% Hispanic), Park County (6% Hispanic), Yellowstone County (6.6% Hispanic), and Golden Valley County (4.3% Hispanic).

Carbon County's Native American/Other Population

222 residents of Carbon County, or 2.0% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Carbon County is slightly lower than in Montana overall, where 5.9% of the population is Native American/Other. Carbon County ranks 39th statewide in terms of Native American/Other residents as a share of the population, out of 56 counties.

Since the 2020 Census, Carbon County's Native American/Other population has grown by an estimated 56.3%. Native American/Other residents' share of Carbon County's population has increased from 1.4% to 2.0%.

Carbon County is more Native American/Other than neighboring Stillwater County (0.4% Native American/Other), and Golden Valley County (0.8% Native American/Other). Carbon County is less Native American/Other than neighboring Park County (2.4% Native American/Other), Yellowstone County (4.1% Native American/Other), and Sweet Grass County (2.4% Native American/Other).

Carbon County's Multiracial Population

503 residents of Carbon County, or 4.5% of the population, identify as Multiracial. The share of Multiracial residents in Carbon County is comparable to the share in Montana overall, where 4.7% of the population is Multiracial. Carbon County ranks 32nd statewide in terms of Multiracial residents as a share of the population, out of 56 counties.

Since the 2020 Census, Carbon County's Multiracial population has grown by an estimated 16.2%. Multiracial residents' share of Carbon County's population has remained roughly unchanged at 4.5%.

Carbon County is more Multiracial than neighboring Stillwater County (3.7% Multiracial), Park County (3.9% Multiracial), Sweet Grass County (4.4% Multiracial), and Golden Valley County (3.8% Multiracial). Carbon County is less Multiracial than neighboring Yellowstone County (4.7% 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.