Hill County Demographics

A map of Hill County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	10,841	11,020	67.1%	67.6%
Native American/Other	3,659	3,703	22.6%	22.7%
Multiracial	1,021	963	6.3%	5.9%
Hispanic	566	500	3.5%	3.1%
Black	41	44	0.3%	0.3%
Asian	27	79	0.2%	0.5%

Hill County, Montana has an estimated population of 16,155, a less than 1% change from the 16,309 recorded in the 2020 Census. The population is 67.1% White, 22.6% Native American/Other, 6.3% Multiracial, 3.5% Hispanic, 0.3% Black, and 0.2% Asian. This demographic dot map shows the population of Hill County, with one dot drawn for each person counted by the Census, color-coded by race.

Hill has become slightly more racially diverse since the 2020 Census. It is considerably more 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 Hill County, that probability was 48.7% in 2020 and 49.3% in the most recent ACS estimates.

Hill County is ranked the 12th most populous county in Montana, out of 56 counties. Hill County was ranked the 12th most populous county in the 2020 Census.

Hill County's White Population

10,841 residents of Hill County, or 67.1% of the population, identify as White. The share of White residents in Hill County is significantly lower than in Montana overall, where 83.6% of the population is White. Hill County ranks 50th statewide in terms of White residents as a share of the population, out of 56 counties.

Since the 2020 Census, Hill County's White population has declined by an estimated 1.6%. White residents' share of Hill County's population has decreased from 67.6% to 67.1%.

Hill County is more White than neighboring Blaine County (44.1% White). Hill County is less White than neighboring Chouteau County (75.4% White), Liberty County (93.4% White), Toole County (82.2% White), and Judith Basin County (89.9% White).

Hill County's Black Population

41 residents of Hill County, or 0.3% of the population, identify as Black. The share of Black residents in Hill County is comparable to the share in Montana overall, where 0.4% of the population is Black. Hill County ranks 20th statewide in terms of Black residents as a share of the population, out of 56 counties.

Since the 2020 Census, Hill County's Black population has declined by an estimated 6.8%. Black residents' share of Hill County's population has remained roughly unchanged at 0.3%.

Hill County is more Black than neighboring Chouteau County (0.1% Black), Liberty County (0% Black), and Judith Basin County (0% Black). Hill County is less Black than neighboring Blaine County (0.4% Black), and Toole County (1.7% Black).

Hill County's Asian Population

27 residents of Hill County, or 0.2% of the population, identify as Asian. The share of Asian residents in Hill County is comparable to the share in Montana overall, where 0.8% of the population is Asian. Hill County ranks 15th statewide in terms of Asian residents as a share of the population, out of 56 counties.

Since the 2020 Census, Hill County's Asian population has declined by an estimated 65.8%. Asian residents' share of Hill County's population has remained roughly unchanged at 0.2%.

Hill County is more Asian than neighboring Chouteau County (0.1% Asian), Blaine County (0.1% Asian), and Judith Basin County (0% Asian). Hill County is less Asian than neighboring Liberty County (0.7% Asian), and Toole County (1.2% Asian).

Hill County's Hispanic Population

566 residents of Hill County, or 3.5% of the population, identify as Hispanic. The share of Hispanic residents in Hill County is comparable to the share in Montana overall, where 4.6% of the population is Hispanic. Hill County ranks 20th statewide in terms of Hispanic residents as a share of the population, out of 56 counties.

Since the 2020 Census, Hill County's Hispanic population has grown by an estimated 13.2%. Hispanic residents' share of Hill County's population has remained roughly unchanged at 3.5%.

Hill County is more Hispanic than neighboring Chouteau County (3.1% Hispanic), Liberty County (0.1% Hispanic), and Blaine County (2.8% Hispanic). Hill County is less Hispanic than neighboring Toole County (4.4% Hispanic), and Judith Basin County (7.7% Hispanic).

Hill County's Native American/Other Population

3,659 residents of Hill County, or 22.6% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Hill County is significantly higher than in Montana overall, where 5.9% of the population is Native American/Other. Hill County ranks 7th statewide in terms of Native American/Other residents as a share of the population, out of 56 counties.

Since the 2020 Census, Hill County's Native American/Other population has declined by an estimated 1.2%. Native American/Other residents' share of Hill County's population has remained roughly unchanged at 22.6%.

Hill County is more Native American/Other than neighboring Chouteau County (16.6% Native American/Other), Liberty County (2.7% Native American/Other), Toole County (5.8% Native American/Other), and Judith Basin County (1.5% Native American/Other). Hill County is less Native American/Other than neighboring Blaine County (47% Native American/Other).

Hill County's Multiracial Population

1,021 residents of Hill County, or 6.3% of the population, identify as Multiracial. The share of Multiracial residents in Hill County is comparable to the share in Montana overall, where 4.7% of the population is Multiracial. Hill County ranks 5th statewide in terms of Multiracial residents as a share of the population, out of 56 counties.

Since the 2020 Census, Hill County's Multiracial population has grown by an estimated 6.0%. Multiracial residents' share of Hill County's population has remained roughly unchanged at 6.3%.

Hill County is more Multiracial than neighboring Chouteau County (4.8% Multiracial), Liberty County (3.1% Multiracial), Blaine County (5.6% Multiracial), Toole County (4.7% Multiracial), and Judith Basin County (0.9% 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.