Yellowstone County Demographics

A map of Yellowstone County's Population by Race

Yellowstone County, Montana had a population of 164,731 in 2020. It was 82.9% White, 0.7% Black, 0.8% Asian, 6.1% Hispanic, 4.5% Native American/Other, and 5.0% Multiracial. This map presents the population of Yellowstone County, with one dot drawn for each person counted in the 2020 Census, color-coded by race.

Yellowstone County is the most populous county of the 56 counties in Montana.

Yellowstone County's White Population

136,514 residents of Yellowstone County identify as White, or 82.9%. This makes the White share of the population of Yellowstone County roughly similar to the White share of the population of Montana (83.1% White). Of the 56 counties in Montana, Yellowstone County is ranked #45 in terms of White residents as a share of the population.

Yellowstone County is more White than neighboring Big Horn County (26% White). Yellowstone County is less White than neighboring Musselshell County (90.4% White), Golden Valley County (88% White), Carbon County (91.7% White), and Treasure County (90.3% White).

Yellowstone County's Black Population

1,187 residents of Yellowstone County identify as Black, or 0.7%. This makes the Black share of the population of Yellowstone County roughly similar to the Black share of the population of Montana (0.5% Black). Of the 56 counties in Montana, Yellowstone County is ranked #4 in terms of Black residents as a share of the population.

Yellowstone County is more Black than neighboring Musselshell County (0.1% Black), Big Horn County (0.1% Black), Carbon County (0.1% Black), and Treasure County (0.1% Black). Yellowstone County is less Black than neighboring Golden Valley County (0.9% Black).

Yellowstone County's Asian Population

1,279 residents of Yellowstone County identify as Asian, or 0.8%. This makes the Asian share of the population of Yellowstone County roughly similar to the Asian share of the population of Montana (0.7% Asian). Of the 56 counties in Montana, Yellowstone County is ranked #6 in terms of Asian residents as a share of the population.

Yellowstone County is more Asian than neighboring Musselshell County (0.5% Asian), Big Horn County (0.3% Asian), Golden Valley County (0% Asian), Carbon County (0.2% Asian), and Treasure County (0.4% Asian).

Yellowstone County's Hispanic Population

10,115 residents of Yellowstone County identify as Hispanic, or 6.1%. This makes the Hispanic share of the population of Yellowstone County roughly similar to the Hispanic share of the population of Montana (4.2% Hispanic). Of the 56 counties in Montana, Yellowstone County is ranked #1 in terms of Hispanic residents as a share of the population.

Yellowstone County is more Hispanic than neighboring Musselshell County (3.1% Hispanic), Big Horn County (3.9% Hispanic), Golden Valley County (4.3% Hispanic), Carbon County (2.5% Hispanic), and Treasure County (4.1% Hispanic).

Yellowstone County's Native American/Other Population

7,333 residents of Yellowstone County identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other, or 4.5%. This makes the Native American/Other share of the population of Yellowstone County roughly similar to the Native American/Other share of the population of Montana (6.4% Native American/Other). Of the 56 counties in Montana, Yellowstone County is ranked #15 in terms of Native American/Other residents as a share of the population.

Yellowstone County is more Native American/Other than neighboring Musselshell County (2.2% Native American/Other), Golden Valley County (1.6% Native American/Other), Carbon County (1.4% Native American/Other), and Treasure County (2.1% Native American/Other). Yellowstone County is less Native American/Other than neighboring Big Horn County (65.8% Native American/Other).

Yellowstone County's Multiracial Population

8,303 residents of Yellowstone County identify as Multiracial, or 5.0%. This makes the Multiracial share of the population of Yellowstone County roughly similar to the Multiracial share of the population of Montana (5% Multiracial). Of the 56 counties in Montana, Yellowstone County is ranked #15 in terms of Multiracial residents as a share of the population.

Yellowstone County is more Multiracial than neighboring Musselshell County (3.8% Multiracial), Big Horn County (3.9% Multiracial), Carbon County (4.1% Multiracial), and Treasure County (3% Multiracial). Yellowstone County is less Multiracial than neighboring Golden Valley County (5.3% Multiracial).

Source: 2020 Census State Redistricting Data and Census TIGER/Line Shapefiles.