Flathead County Demographics

A map of Flathead County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	99,670	93,416	90.0%	89.5%
Multiracial	4,395	5,173	4.0%	5.0%
Hispanic	4,076	3,329	3.7%	3.2%
Native American/Other	1,387	1,467	1.3%	1.4%
Asian	931	703	0.8%	0.7%
Black	236	269	0.2%	0.3%

Flathead County, Montana has an estimated population of 110,695, an increase from the 104,357 recorded in the 2020 Census. The population is 90.0% White, 4.0% Multiracial, 3.7% Hispanic, 1.3% Native American/Other, 0.8% Asian, and 0.2% Black. This demographic dot map shows the population of Flathead County, with one dot drawn for each person counted by the Census, color-coded by race.

Flathead has become slightly less 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 Flathead County, that probability was 19.5% in 2020 and 18.6% in the most recent ACS estimates.

Flathead County is ranked the 4th most populous county in Montana, out of 56 counties. Flathead County was ranked the 4th most populous county in the 2020 Census.

Flathead County's White Population

99,670 residents of Flathead County, or 90.0% of the population, identify as White. The share of White residents in Flathead County is higher than in Montana overall, where 83.6% of the population is White. Flathead County ranks 29th statewide in terms of White residents as a share of the population, out of 56 counties.

Since the 2020 Census, Flathead County's White population has grown by an estimated 6.7%. White residents' share of Flathead County's population has increased from 89.5% to 90.0%.

Flathead County is more White than neighboring Lake County (64.6% White), Glacier County (29.5% White), Sanders County (88.3% White), and Missoula County (85.5% White).

Flathead County's Black Population

236 residents of Flathead County, or 0.2% of the population, identify as Black. The share of Black residents in Flathead County is comparable to the share in Montana overall, where 0.4% of the population is Black. Flathead County ranks 21st statewide in terms of Black residents as a share of the population, out of 56 counties.

Since the 2020 Census, Flathead County's Black population has declined by an estimated 12.3%. Black residents' share of Flathead County's population has remained roughly unchanged at 0.2%.

Flathead County is more Black than neighboring Lincoln County (0.1% Black). Flathead County is less Black than neighboring Missoula County (0.4% Black).

Flathead County's Asian Population

931 residents of Flathead County, or 0.8% of the population, identify as Asian. The share of Asian residents in Flathead County is comparable to the share in Montana overall, where 0.8% of the population is Asian. Flathead County ranks 9th statewide in terms of Asian residents as a share of the population, out of 56 counties.

Since the 2020 Census, Flathead County's Asian population has grown by an estimated 32.4%. Asian residents' share of Flathead County's population has remained roughly unchanged at 0.8%.

Flathead County is more Asian than neighboring Lake County (0.7% Asian), Glacier County (0.6% Asian), Sanders County (0.5% Asian), and Lincoln County (0.2% Asian). Flathead County is less Asian than neighboring Missoula County (1.6% Asian).

Flathead County's Hispanic Population

4,076 residents of Flathead County, or 3.7% of the population, identify as Hispanic. The share of Hispanic residents in Flathead County is comparable to the share in Montana overall, where 4.6% of the population is Hispanic. Flathead County ranks 18th statewide in terms of Hispanic residents as a share of the population, out of 56 counties.

Since the 2020 Census, Flathead County's Hispanic population has grown by an estimated 22.4%. Hispanic residents' share of Flathead County's population has increased from 3.2% to 3.7%.

Flathead County is more Hispanic than neighboring Glacier County (2.9% Hispanic), Sanders County (3.5% Hispanic), and Lincoln County (3.1% Hispanic). Flathead County is less Hispanic than neighboring Lake County (4.3% Hispanic), and Missoula County (5.1% Hispanic).

Flathead County's Native American/Other Population

1,387 residents of Flathead County, or 1.3% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Flathead County is slightly lower than in Montana overall, where 5.9% of the population is Native American/Other. Flathead County ranks 37th statewide in terms of Native American/Other residents as a share of the population, out of 56 counties.

Since the 2020 Census, Flathead County's Native American/Other population has declined by an estimated 5.5%. Native American/Other residents' share of Flathead County's population has remained roughly unchanged at 1.3%.

Flathead County is less Native American/Other than neighboring Lake County (20% Native American/Other), Glacier County (63.8% Native American/Other), Sanders County (2.7% Native American/Other), Missoula County (2.5% Native American/Other), and Lincoln County (1.4% Native American/Other).

Flathead County's Multiracial Population

4,395 residents of Flathead County, or 4.0% of the population, identify as Multiracial. The share of Multiracial residents in Flathead County is comparable to the share in Montana overall, where 4.7% of the population is Multiracial. Flathead County ranks 20th statewide in terms of Multiracial residents as a share of the population, out of 56 counties.

Since the 2020 Census, Flathead County's Multiracial population has declined by an estimated 15.0%. Multiracial residents' share of Flathead County's population has decreased from 5.0% to 4.0%.

Flathead County is more Multiracial than neighboring Glacier County (3% Multiracial). Flathead County is less Multiracial than neighboring Lake County (10.2% Multiracial), Sanders County (4.8% Multiracial), Missoula County (5% Multiracial), and Lincoln County (5.3% 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.