Population By Race and Ethnicity in Jefferson County, MT in 2020

Updated on January 29, 2024.

Based on the US Census Vintage data estimates, in 2020, the 12,140 population of Jefferson County, Montana comprised of 360 people who identified as Hispanic (2.97%), and 11,780 people who identified as Non-Hispanic (97.04%).

Race: The White Alone population was the largest racial group in Jefferson County, Montana with a population of 11,429 (94.14%); Two Or More Races population was the second largest racial group with a population of 325 (2.68%); and American Indian and Alaska Native Alone was the third largest racial group with a population of 243 (2%).

Ethnicity: The White Alone - Non Hispanic population was the largest ethnic group in Jefferson County, Montana in 2020, with a population of 11,127 (91.66%); the second largest ethnic group was White Alone - Hispanic with a population of 302 (2.49%); and the third largest ethnic group was Two Or More Races - Non Hispanic with a population of 299 (2.46%).

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 2020
Total Population:
Race in Jefferson County, MT in 2020
Total Population:
Ethnicity in Jefferson County, MT in 2020
Total Population:
Population By Race in Jefferson , MT in 2020
Race Population Percentage
Black or African American Alone 59 0.49%
White Alone 11,429 94.14%
American Indian and Alaska Native Alone 243 2%
Asian Alone 72 0.59%
Native Hawaiian And Pacific Islander Alone 12 0.1%
Two Or More Races 325 2.68%
Population By Ethnicity in Jefferson , MT in 2020
Ethnicity Population Percentage
Black or African American Alone - Hispanic 4 0.03%
White Alone - Hispanic 302 2.49%
American Indian and Alaska Native Alone - Hispanic 27 0.22%
Asian Alone - Hispanic 1 0.01%
Native Hawaiian And Pacific Islander Alone - Hispanic 0 0%
Two Or More Races - Hispanic 26 0.21%
Black or African American Alone - Non Hispanic 55 0.45%
White Alone - Non Hispanic 11,127 91.66%
American Indian and Alaska Native Alone - Non Hispanic 216 1.78%
Asian Alone - Non Hispanic 71 0.59%
Native Hawaiian And Pacific Islander Alone - Non Hispanic 12 0.1%
Two Or More Races - Non Hispanic 299 2.46%