Population By Race and Ethnicity in Yellowstone County, MT in 2021

Updated on January 29, 2024.

Based on the US Census Vintage data estimates, in 2021, the 167,397 population of Yellowstone County, Montana comprised of 10,536 people who identified as Hispanic (6.29%), and 156,861 people who identified as Non-Hispanic (93.71%).

Race: The White Alone population was the largest racial group in Yellowstone County, Montana with a population of 150,779 (90.07%); American Indian and Alaska Native Alone population was the second largest racial group with a population of 8,565 (5.12%); and Two Or More Races was the third largest racial group with a population of 5,418 (3.24%).

Ethnicity: The White Alone - Non Hispanic population was the largest ethnic group in Yellowstone County, Montana in 2021, with a population of 142,707 (85.25%); the second largest ethnic group was White Alone - Hispanic with a population of 8,072 (4.82%); and the third largest ethnic group was American Indian and Alaska Native Alone - Non Hispanic with a population of 7,021 (4.19%).

The charts and tables below shows the population and percentage of each racial and ethnicity group in Yellowstone, Montana.

You can find similar information for other Montana counties, and for Montana.

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Hispanics and Non Hispanics in Yellowstone County, MT in 2021
Total Population:
Race in Yellowstone County, MT in 2021
Total Population:
Ethnicity in Yellowstone County, MT in 2021
Total Population:
Population By Race in Yellowstone , MT in 2021
Race Population Percentage
Black or African American Alone 1,159 0.69%
White Alone 150,779 90.07%
American Indian and Alaska Native Alone 8,565 5.12%
Asian Alone 1,336 0.8%
Native Hawaiian And Pacific Islander Alone 140 0.08%
Two Or More Races 5,418 3.24%
Population By Ethnicity in Yellowstone , MT in 2021
Ethnicity Population Percentage
Black or African American Alone - Hispanic 122 0.07%
White Alone - Hispanic 8,072 4.82%
American Indian and Alaska Native Alone - Hispanic 1,544 0.92%
Asian Alone - Hispanic 80 0.05%
Native Hawaiian And Pacific Islander Alone - Hispanic 14 0.01%
Two Or More Races - Hispanic 704 0.42%
Black or African American Alone - Non Hispanic 1,037 0.62%
White Alone - Non Hispanic 142,707 85.25%
American Indian and Alaska Native Alone - Non Hispanic 7,021 4.19%
Asian Alone - Non Hispanic 1,256 0.75%
Native Hawaiian And Pacific Islander Alone - Non Hispanic 126 0.08%
Two Or More Races - Non Hispanic 4,714 2.82%