Madison County Demographics

A map of Madison County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	8,339	7,955	90.4%	92.3%
Hispanic	337	239	3.7%	2.8%
Multiracial	324	308	3.5%	3.6%
Native American/Other	181	80	2.0%	0.9%
Asian	42	30	0.5%	0.3%
Black	0	11	0.0%	0.1%

Madison County, Montana has an estimated population of 9,223, an increase from the 8,623 recorded in the 2020 Census. The population is 90.4% White, 3.7% Hispanic, 3.5% Multiracial, 2.0% Native American/Other, 0.5% Asian, and 0.0% Black. This demographic dot map shows the population of Madison County, with one dot drawn for each person counted by the Census, color-coded by race.

Madison 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 Madison County, that probability was 14.7% in 2020 and 17.9% in the most recent ACS estimates.

Madison County is ranked the 24th most populous county in Montana, out of 56 counties. Madison County was ranked the 26th most populous county in the 2020 Census.

Madison County's White Population

8,339 residents of Madison County, or 90.4% of the population, identify as White. The share of White residents in Madison County is higher than in Montana overall, where 83.6% of the population is White. Madison County ranks 10th statewide in terms of White residents as a share of the population, out of 56 counties.

Since the 2020 Census, Madison County's White population has grown by an estimated 4.8%. White residents' share of Madison County's population has decreased from 92.3% to 90.4%.

Madison County is more White than neighboring Gallatin County (87.5% White), Silver Bow County (89.1% White), Beaverhead County (89.1% White), and Clark County (63.1% White). Madison County is less White than neighboring Jefferson County (90.6% White).

Madison County's Black Population

0 residents of Madison County, or 0.0% of the population, identify as Black. The share of Black residents in Madison County is comparable to the share in Montana overall, where 0.4% of the population is Black. Madison County ranks 43rd statewide in terms of Black residents as a share of the population, out of 56 counties.

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

Madison County is less Black than neighboring Gallatin County (0.4% Black), Silver Bow County (0.1% Black), and Beaverhead County (0.5% Black).

Madison County's Asian Population

42 residents of Madison County, or 0.5% of the population, identify as Asian. The share of Asian residents in Madison County is comparable to the share in Montana overall, where 0.8% of the population is Asian. Madison County ranks 33rd statewide in terms of Asian residents as a share of the population, out of 56 counties.

Since the 2020 Census, Madison County's Asian population has grown by an estimated 40.0%. Asian residents' share of Madison County's population has remained roughly unchanged at 0.5%.

Madison County is more Asian than neighboring Jefferson County (0.4% Asian), Silver Bow County (0.4% Asian), Beaverhead County (0.3% Asian), and Clark County (0% Asian). Madison County is less Asian than neighboring Gallatin County (1.2% Asian).

Madison County's Hispanic Population

337 residents of Madison County, or 3.7% of the population, identify as Hispanic. The share of Hispanic residents in Madison County is comparable to the share in Montana overall, where 4.6% of the population is Hispanic. Madison County ranks 32nd statewide in terms of Hispanic residents as a share of the population, out of 56 counties.

Since the 2020 Census, Madison County's Hispanic population has grown by an estimated 41.0%. Hispanic residents' share of Madison County's population has increased from 2.8% to 3.7%.

Madison County is more Hispanic than neighboring Jefferson County (3% Hispanic). Madison County is less Hispanic than neighboring Gallatin County (5.4% Hispanic), Silver Bow County (4.6% Hispanic), Beaverhead County (5.2% Hispanic), and Clark County (28.7% Hispanic).

Madison County's Native American/Other Population

181 residents of Madison County, or 2.0% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Madison County is slightly lower than in Montana overall, where 5.9% of the population is Native American/Other. Madison County ranks 49th statewide in terms of Native American/Other residents as a share of the population, out of 56 counties.

Since the 2020 Census, Madison County's Native American/Other population has grown by an estimated 126.3%. Native American/Other residents' share of Madison County's population has increased from 0.9% to 2.0%.

Madison County is more Native American/Other than neighboring Gallatin County (1.4% Native American/Other), Jefferson County (1.7% Native American/Other), Silver Bow County (1.6% Native American/Other), and Beaverhead County (1.4% Native American/Other). Madison County is less Native American/Other than neighboring Clark County (7.1% Native American/Other).

Madison County's Multiracial Population

324 residents of Madison County, or 3.5% of the population, identify as Multiracial. The share of Multiracial residents in Madison County is comparable to the share in Montana overall, where 4.7% of the population is Multiracial. Madison County ranks 48th statewide in terms of Multiracial residents as a share of the population, out of 56 counties.

Since the 2020 Census, Madison County's Multiracial population has grown by an estimated 5.2%. Multiracial residents' share of Madison County's population has remained roughly unchanged at 3.5%.

Madison County is more Multiracial than neighboring Clark County (1.1% Multiracial). Madison County is less Multiracial than neighboring Gallatin County (4% Multiracial), Jefferson County (4.4% Multiracial), and Silver Bow County (4.2% 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.