Granite County Demographics

A map of Granite County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	3,115	3,066	90.0%	92.7%
Multiracial	137	118	4.0%	3.6%
Hispanic	91	85	2.6%	2.6%
Native American/Other	82	37	2.4%	1.1%
Asian	32	3	0.9%	0.1%
Black	5	0	0.1%	0.0%

Granite County, Montana has an estimated population of 3,462, an increase from the 3,309 recorded in the 2020 Census. The population is 90.0% White, 4.0% Multiracial, 2.6% Hispanic, 2.4% Native American/Other, 0.9% Asian, and 0.1% Black. This demographic dot map shows the population of Granite County, with one dot drawn for each person counted by the Census, color-coded by race.

Granite 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 Granite County, that probability was 13.9% in 2020 and 18.8% in the most recent ACS estimates.

Granite County is ranked the 41st most populous county in Montana, out of 56 counties. Granite County was ranked the 41st most populous county in the 2020 Census.

Granite County's White Population

3,115 residents of Granite County, or 90.0% of the population, identify as White. The share of White residents in Granite County is higher than in Montana overall, where 83.6% of the population is White. Granite County ranks 7th statewide in terms of White residents as a share of the population, out of 56 counties.

Since the 2020 Census, Granite County's White population has grown by an estimated 1.6%. White residents' share of Granite County's population has decreased from 92.7% to 90.0%.

Granite County is more White than neighboring Deer Lodge County (89.3% White), Powell County (86.8% White), Ravalli County (88.6% White), Missoula County (85.5% White), and Silver Bow County (89.1% White).

Granite County's Black Population

5 residents of Granite County, or 0.1% of the population, identify as Black. The share of Black residents in Granite County is comparable to the share in Montana overall, where 0.4% of the population is Black. Granite County ranks 52nd statewide in terms of Black residents as a share of the population, out of 56 counties.

Since the 2020 Census, Granite County's Black population has grown from 0 to an estimated 5. Black residents' share of Granite County's population has remained roughly unchanged at 0.1%.

Granite County is less Black than neighboring Deer Lodge County (0.4% Black), Powell County (0.4% Black), Ravalli County (0.3% Black), and Missoula County (0.4% Black).

Granite County's Asian Population

32 residents of Granite County, or 0.9% of the population, identify as Asian. The share of Asian residents in Granite County is comparable to the share in Montana overall, where 0.8% of the population is Asian. Granite County ranks 51st statewide in terms of Asian residents as a share of the population, out of 56 counties.

Since the 2020 Census, Granite County's Asian population has grown by an estimated 966.7%. Asian residents' share of Granite County's population has increased from 0.1% to 0.9%.

Granite County is more Asian than neighboring Deer Lodge County (0.2% Asian), Ravalli County (0.7% Asian), and Silver Bow County (0.4% Asian). Granite County is less Asian than neighboring Powell County (1.5% Asian), and Missoula County (1.6% Asian).

Granite County's Hispanic Population

91 residents of Granite County, or 2.6% of the population, identify as Hispanic. The share of Hispanic residents in Granite County is comparable to the share in Montana overall, where 4.6% of the population is Hispanic. Granite County ranks 37th statewide in terms of Hispanic residents as a share of the population, out of 56 counties.

Since the 2020 Census, Granite County's Hispanic population has grown by an estimated 7.1%. Hispanic residents' share of Granite County's population has remained roughly unchanged at 2.6%.

Granite County is less Hispanic than neighboring Deer Lodge County (3.5% Hispanic), Powell County (2.7% Hispanic), Ravalli County (4.1% Hispanic), Missoula County (5.1% Hispanic), and Silver Bow County (4.6% Hispanic).

Granite County's Native American/Other Population

82 residents of Granite County, or 2.4% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Granite County is slightly lower than in Montana overall, where 5.9% of the population is Native American/Other. Granite County ranks 45th statewide in terms of Native American/Other residents as a share of the population, out of 56 counties.

Since the 2020 Census, Granite County's Native American/Other population has grown by an estimated 121.6%. Native American/Other residents' share of Granite County's population has increased from 1.1% to 2.4%.

Granite County is more Native American/Other than neighboring Deer Lodge County (2.2% Native American/Other), Ravalli County (1.5% Native American/Other), and Silver Bow County (1.6% Native American/Other). Granite County is less Native American/Other than neighboring Powell County (5.1% Native American/Other), and Missoula County (2.5% Native American/Other).

Granite County's Multiracial Population

137 residents of Granite County, or 4.0% of the population, identify as Multiracial. The share of Multiracial residents in Granite County is comparable to the share in Montana overall, where 4.7% of the population is Multiracial. Granite County ranks 49th statewide in terms of Multiracial residents as a share of the population, out of 56 counties.

Since the 2020 Census, Granite County's Multiracial population has grown by an estimated 16.1%. Multiracial residents' share of Granite County's population has remained roughly unchanged at 4.0%.

Granite County is more Multiracial than neighboring Powell County (3.5% Multiracial). Granite County is less Multiracial than neighboring Deer Lodge County (4.4% Multiracial), Ravalli County (4.8% Multiracial), Missoula County (5% 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.