Phillips County Demographics

A map of Phillips County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	3,420	3,492	81.0%	82.8%
Multiracial	367	238	8.7%	5.6%
Native American/Other	344	355	8.1%	8.4%
Hispanic	46	112	1.1%	2.7%
Asian	34	15	0.8%	0.4%
Black	10	5	0.2%	0.1%

Phillips County, Montana has an estimated population of 4,221, a less than 1% change from the 4,217 recorded in the 2020 Census. The population is 81.0% White, 8.7% Multiracial, 8.1% Native American/Other, 1.1% Hispanic, 0.8% Asian, and 0.2% Black. This demographic dot map shows the population of Phillips County, with one dot drawn for each person counted by the Census, color-coded by race.

Phillips has become more racially diverse since the 2020 Census. It is 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 Phillips County, that probability was 30.3% in 2020 and 32.9% in the most recent ACS estimates.

Phillips County is ranked the 38th most populous county in Montana, out of 56 counties. Phillips County was ranked the 38th most populous county in the 2020 Census.

Phillips County's White Population

3,420 residents of Phillips County, or 81.0% of the population, identify as White. The share of White residents in Phillips County is slightly lower than in Montana overall, where 83.6% of the population is White. Phillips County ranks 46th statewide in terms of White residents as a share of the population, out of 56 counties.

Since the 2020 Census, Phillips County's White population has declined by an estimated 2.1%. White residents' share of Phillips County's population has decreased from 82.8% to 81.0%.

Phillips County is more White than neighboring Blaine County (44.1% White). Phillips County is less White than neighboring Petroleum County (98.9% White), Valley County (84.2% White), Garfield County (96.7% White), and Fergus County (92.4% White).

Phillips County's Black Population

10 residents of Phillips County, or 0.2% of the population, identify as Black. The share of Black residents in Phillips County is comparable to the share in Montana overall, where 0.4% of the population is Black. Phillips County ranks 46th statewide in terms of Black residents as a share of the population, out of 56 counties.

Since the 2020 Census, Phillips County's Black population has grown by an estimated 100.0%. Black residents' share of Phillips County's population has remained roughly unchanged at 0.2%.

Phillips County is more Black than neighboring Petroleum County (0% Black), and Garfield County (0% Black). Phillips County is less Black than neighboring Blaine County (0.4% Black), Valley County (0.4% Black), and Fergus County (0.6% Black).

Phillips County's Asian Population

34 residents of Phillips County, or 0.8% of the population, identify as Asian. The share of Asian residents in Phillips County is comparable to the share in Montana overall, where 0.8% of the population is Asian. Phillips County ranks 31st statewide in terms of Asian residents as a share of the population, out of 56 counties.

Since the 2020 Census, Phillips County's Asian population has grown by an estimated 126.7%. Asian residents' share of Phillips County's population has remained roughly unchanged at 0.8%.

Phillips County is more Asian than neighboring Blaine County (0.1% Asian), Petroleum County (0.7% Asian), Valley County (0% Asian), Garfield County (0% Asian), and Fergus County (0.7% Asian).

Phillips County's Hispanic Population

46 residents of Phillips County, or 1.1% of the population, identify as Hispanic. The share of Hispanic residents in Phillips County is slightly lower than in Montana overall, where 4.6% of the population is Hispanic. Phillips County ranks 36th statewide in terms of Hispanic residents as a share of the population, out of 56 counties.

Since the 2020 Census, Phillips County's Hispanic population has declined by an estimated 58.9%. Hispanic residents' share of Phillips County's population has decreased from 2.7% to 1.1%.

Phillips County is more Hispanic than neighboring Petroleum County (0% Hispanic), and Garfield County (0% Hispanic). Phillips County is less Hispanic than neighboring Blaine County (2.8% Hispanic), Valley County (2.6% Hispanic), and Fergus County (2.4% Hispanic).

Phillips County's Native American/Other Population

344 residents of Phillips County, or 8.1% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Phillips County is slightly higher than in Montana overall, where 5.9% of the population is Native American/Other. Phillips County ranks 11th statewide in terms of Native American/Other residents as a share of the population, out of 56 counties.

Since the 2020 Census, Phillips County's Native American/Other population has declined by an estimated 3.1%. Native American/Other residents' share of Phillips County's population has remained roughly unchanged at 8.1%.

Phillips County is more Native American/Other than neighboring Petroleum County (0.4% Native American/Other), Garfield County (1.1% Native American/Other), and Fergus County (2.1% Native American/Other). Phillips County is less Native American/Other than neighboring Blaine County (47% Native American/Other), and Valley County (8.6% Native American/Other).

Phillips County's Multiracial Population

367 residents of Phillips County, or 8.7% of the population, identify as Multiracial. The share of Multiracial residents in Phillips County is slightly higher than in Montana overall, where 4.7% of the population is Multiracial. Phillips County ranks 9th statewide in terms of Multiracial residents as a share of the population, out of 56 counties.

Since the 2020 Census, Phillips County's Multiracial population has grown by an estimated 54.2%. Multiracial residents' share of Phillips County's population has increased from 5.6% to 8.7%.

Phillips County is more Multiracial than neighboring Blaine County (5.6% Multiracial), Petroleum County (0% Multiracial), Valley County (4.2% Multiracial), Garfield County (2.2% Multiracial), and Fergus County (1.9% 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.