Fallon County Demographics

A map of Fallon County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	2,544	2,858	92.2%	93.7%
Multiracial	150	88	5.4%	2.9%
Native American/Other	62	30	2.2%	1.0%
Hispanic	4	63	0.1%	2.1%
Black	0	5	0.0%	0.2%
Asian	0	5	0.0%	0.2%

Fallon County, Montana has an estimated population of 2,760, a decrease from the 3,049 recorded in the 2020 Census. The population is 92.2% White, 5.4% Multiracial, 2.2% Native American/Other, 0.1% Hispanic, 0.0% Black, and 0.0% Asian. This demographic dot map shows the population of Fallon County, with one dot drawn for each person counted by the Census, color-coded by race.

Fallon 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 Fallon County, that probability was 12.0% in 2020 and 14.7% in the most recent ACS estimates.

Fallon County is ranked the 42nd most populous county in Montana, out of 56 counties. Fallon County was ranked the 42nd most populous county in the 2020 Census.

Fallon County's White Population

2,544 residents of Fallon County, or 92.2% of the population, identify as White. The share of White residents in Fallon County is higher than in Montana overall, where 83.6% of the population is White. Fallon County ranks 5th statewide in terms of White residents as a share of the population, out of 56 counties.

Since the 2020 Census, Fallon County's White population has declined by an estimated 11.0%. White residents' share of Fallon County's population has decreased from 93.7% to 92.2%.

Fallon County is more White than neighboring Wibaux County (89.2% White), Carter County (88.9% White), Golden Valley County (90.7% White), and Bowman County (91.6% White). Fallon County is less White than neighboring Slope County (92.4% White).

Fallon County's Black Population

0 residents of Fallon County, or 0.0% of the population, identify as Black. The share of Black residents in Fallon County is comparable to the share in Montana overall, where 0.4% of the population is Black. Fallon County ranks 36th statewide in terms of Black residents as a share of the population, out of 56 counties.

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

Fallon County is less Black than neighboring Wibaux County (0.6% Black), Carter County (0.1% Black), and Golden Valley County (0.2% Black).

Fallon County's Asian Population

0 residents of Fallon County, or 0.0% of the population, identify as Asian. The share of Asian residents in Fallon County is comparable to the share in Montana overall, where 0.8% of the population is Asian. Fallon County ranks 48th statewide in terms of Asian residents as a share of the population, out of 56 counties.

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

Fallon County is less Asian than neighboring Wibaux County (0.1% Asian), and Golden Valley County (0.2% Asian).

Fallon County's Hispanic Population

4 residents of Fallon County, or 0.1% of the population, identify as Hispanic. The share of Hispanic residents in Fallon County is slightly lower than in Montana overall, where 4.6% of the population is Hispanic. Fallon County ranks 47th statewide in terms of Hispanic residents as a share of the population, out of 56 counties.

Since the 2020 Census, Fallon County's Hispanic population has declined by an estimated 93.7%. Hispanic residents' share of Fallon County's population has decreased from 2.1% to 0.1%.

Fallon County is less Hispanic than neighboring Wibaux County (7.7% Hispanic), Carter County (2.4% Hispanic), Golden Valley County (0.6% Hispanic), and Bowman County (2.7% Hispanic).

Fallon County's Native American/Other Population

62 residents of Fallon County, or 2.2% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Fallon County is slightly lower than in Montana overall, where 5.9% of the population is Native American/Other. Fallon County ranks 47th statewide in terms of Native American/Other residents as a share of the population, out of 56 counties.

Since the 2020 Census, Fallon County's Native American/Other population has grown by an estimated 106.7%. Native American/Other residents' share of Fallon County's population has increased from 1.0% to 2.2%.

Fallon County is more Native American/Other than neighboring Wibaux County (2% Native American/Other), Carter County (0.2% Native American/Other), Golden Valley County (1.3% Native American/Other), Bowman County (1.7% Native American/Other), and Slope County (0.8% Native American/Other).

Fallon County's Multiracial Population

150 residents of Fallon County, or 5.4% of the population, identify as Multiracial. The share of Multiracial residents in Fallon County is comparable to the share in Montana overall, where 4.7% of the population is Multiracial. Fallon County ranks 55th statewide in terms of Multiracial residents as a share of the population, out of 56 counties.

Since the 2020 Census, Fallon County's Multiracial population has grown by an estimated 70.5%. Multiracial residents' share of Fallon County's population has increased from 2.9% to 5.4%.

Fallon County is more Multiracial than neighboring Wibaux County (0.4% Multiracial), and Bowman County (4% Multiracial). Fallon County is less Multiracial than neighboring Carter County (8.3% Multiracial), Golden Valley County (7% Multiracial), and Slope County (6.7% 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.