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

Updated on August 1, 2024.

Based on the US Census Vintage data estimates, in 2021, the 12,468 population of Jefferson County, Montana comprised of 327 people who identified as Hispanic (2.62%), and 12,141 people who identified as Non-Hispanic (97.38%).

Race: The White Alone population was the largest racial group in Jefferson County, Montana with a population of 11,725 (94.04%); Two Or More Races population was the second largest racial group with a population of 341 (2.74%); and American Indian and Alaska Native Alone was the third largest racial group with a population of 248 (1.99%).

Ethnicity: The White Alone - Non Hispanic population was the largest ethnic group in Jefferson County, Montana in 2021, with a population of 11,466 (91.96%); the second largest ethnic group was Two Or More Races - Non Hispanic with a population of 306 (2.45%); and the third largest ethnic group was White Alone - Hispanic with a population of 259 (2.08%).

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

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

See this for other years:
Hispanics and Non Hispanics in Jefferson County, MT in 2021
Total Population:
Race in Jefferson County, MT in 2021
Total Population:
Ethnicity in Jefferson County, MT in 2021
Total Population:
Population By Race in Jefferson , MT in 2021
Race Population Percentage
Black or African American Alone 66 0.53%
White Alone 11,725 94.04%
American Indian and Alaska Native Alone 248 1.99%
Asian Alone 74 0.59%
Native Hawaiian And Pacific Islander Alone 14 0.11%
Two Or More Races 341 2.74%
Population By Ethnicity in Jefferson , MT in 2021
Ethnicity Population Percentage
Black or African American Alone - Hispanic 4 0.03%
White Alone - Hispanic 259 2.08%
American Indian and Alaska Native Alone - Hispanic 28 0.23%
Asian Alone - Hispanic 1 0.01%
Native Hawaiian And Pacific Islander Alone - Hispanic 0 0%
Two Or More Races - Hispanic 35 0.28%
Black or African American Alone - Non Hispanic 62 0.5%
White Alone - Non Hispanic 11,466 91.96%
American Indian and Alaska Native Alone - Non Hispanic 220 1.77%
Asian Alone - Non Hispanic 73 0.59%
Native Hawaiian And Pacific Islander Alone - Non Hispanic 14 0.11%
Two Or More Races - Non Hispanic 306 2.45%