Carter County Demographics

A map of Carter County's Population by Race

Carter County, Montana has an estimated population of 1,308, a decrease from the 1,415 recorded in the 2020 Census. The population is 88.9% White, 8.3% Multiracial, 2.4% Hispanic, 0.2% Native American/Other, 0.1% Black, and 0.0% Asian. This demographic dot map shows the population of Carter County, with one dot drawn for each person counted by the Census, color-coded by race.

Carter has become considerably 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 Carter County, that probability was 10.0% in 2020 and 20.2% in the most recent ACS estimates.

Carter County is ranked the 50th most populous county in Montana, out of 56 counties. Carter County was ranked the 50th most populous county in the 2020 Census.

Carter County's White Population

1,163 residents of Carter County, or 88.9% of the population, identify as White. The share of White residents in Carter County is higher than in Montana overall, where 83.6% of the population is White. Carter County ranks 2nd statewide in terms of White residents as a share of the population, out of 56 counties.

Since the 2020 Census, Carter County's White population has declined by an estimated 13.3%. White residents' share of Carter County's population has decreased from 94.8% to 88.9%.

Carter County is less White than neighboring Fallon County (92.2% White), Crook County (92.9% White), Harding County (91.2% White), Powder River County (89.2% White), and Bowman County (91.6% White).

Carter County's Black Population

1 residents of Carter County, or 0.1% of the population, identify as Black. The share of Black residents in Carter County is comparable to the share in Montana overall, where 0.4% of the population is Black. Carter County ranks 52nd statewide in terms of Black residents as a share of the population, out of 56 counties.

Since the 2020 Census, Carter County's Black population has grown from 0 to an estimated 1. Black residents' share of Carter County's population has remained roughly unchanged at 0.1%.

Carter County is more Black than neighboring Fallon County (0% Black), Crook County (0% Black), Powder River County (0% Black), and Bowman County (0% Black). Carter County is less Black than neighboring Harding County (1.5% Black).

Carter County's Asian Population

0 residents of Carter County, or 0.0% of the population, identify as Asian. The share of Asian residents in Carter County is comparable to the share in Montana overall, where 0.8% of the population is Asian. Carter County ranks 53rd statewide in terms of Asian residents as a share of the population, out of 56 counties.

Since the 2020 Census, Carter County's Asian population has declined by an estimated 100.0%. Asian residents' share of Carter County's population has remained roughly unchanged at 0.0%.

Carter County is less Asian than neighboring Crook County (0.2% Asian), and Powder River County (0.9% Asian).

Carter County's Hispanic Population

32 residents of Carter County, or 2.4% of the population, identify as Hispanic. The share of Hispanic residents in Carter County is slightly lower than in Montana overall, where 4.6% of the population is Hispanic. Carter County ranks 55th statewide in terms of Hispanic residents as a share of the population, out of 56 counties.

Since the 2020 Census, Carter County's Hispanic population has grown by an estimated 190.9%. Hispanic residents' share of Carter County's population has increased from 0.8% to 2.4%.

Carter County is more Hispanic than neighboring Fallon County (0.1% Hispanic), Crook County (2.1% Hispanic), Harding County (1.4% Hispanic), and Powder River County (1.4% Hispanic). Carter County is less Hispanic than neighboring Bowman County (2.7% Hispanic).

Carter County's Native American/Other Population

3 residents of Carter County, or 0.2% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Carter County is lower than in Montana overall, where 5.9% of the population is Native American/Other. Carter County ranks 54th statewide in terms of Native American/Other residents as a share of the population, out of 56 counties.

Since the 2020 Census, Carter County's Native American/Other population has declined by an estimated 72.7%. Native American/Other residents' share of Carter County's population has decreased from 0.8% to 0.2%.

Carter County is less Native American/Other than neighboring Fallon County (2.2% Native American/Other), Crook County (0.5% Native American/Other), Harding County (1.9% Native American/Other), Powder River County (3% Native American/Other), and Bowman County (1.7% Native American/Other).

Carter County's Multiracial Population

109 residents of Carter County, or 8.3% of the population, identify as Multiracial. The share of Multiracial residents in Carter County is slightly higher than in Montana overall, where 4.7% of the population is Multiracial. Carter County ranks 47th statewide in terms of Multiracial residents as a share of the population, out of 56 counties.

Since the 2020 Census, Carter County's Multiracial population has grown by an estimated 113.7%. Multiracial residents' share of Carter County's population has increased from 3.6% to 8.3%.

Carter County is more Multiracial than neighboring Fallon County (5.4% Multiracial), Crook County (4.3% Multiracial), Harding County (4% Multiracial), Powder River County (5.5% Multiracial), and Bowman County (4% 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.