Jefferson, Montana Census 2020 Population By Race and Ethnicity

Updated on February 22, 2026.

According to the data from the US 2020 decennial Census, in April 2020, the 12.09K population of Jefferson, MT residents comprised of 291 residents who identified as Hispanic or Latino (2.41%), and 11.79K residents who identified as Non-Hispanic (97.59%).

Race: The White Alone population was the largest racial group in Jefferson, MT, with a population of 11.02K (91.15%). The Two Or More Races population was the second largest racial group in Jefferson, MT, with a population of 748 (6.19%). The American Indian and Alaska Native Alone population was the third largest racial group in Jefferson, MT, with a population of 162 (1.34%). The smallest racial group in Jefferson, MT was Native Hawaiian And Pacific Islander Alone with a population of 0 (0.00%).

Ethnicity: The Non-Hispanic - White Alone population was the largest ethnic group in Jefferson, MT, with a population of 10.93K (90.41%). The Non-Hispanic - Two or More Races population was the second largest ethnic group in Jefferson, MT, with a population of 600 (4.97%). The Non-Hispanic - American Indian & Alaska Native population was the third largest ethnic group in Jefferson, MT, with a population of 161 (1.33%). The smallest ethnic group in Jefferson, MT was Hispanic - Native Hawaiian & Pac. Islander with a population of 0 (0.00%).

The charts and tables below shows the population and percentage of each racial group and ethnicity group in Jefferson, Montana from the 2020 decennial census.

You can see similar information for other Montana counties and also for the state of Montana.

Jefferson, MT Hispanics and Non Hispanics Population in Census 2020
Total Population:
Jefferson, MT Racial Groups in Census 2020
Total Population:
Jefferson, MT Ethnicity Groups in Census 2020
Total Population:
Jefferson, MT Population of Racial Groups in Census 2020
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Race Population % of County Population
Black or African American Alone 16 0.13
White Alone 11016 91.15
American Indian and Alaska Native Alone 162 1.34
Asian Alone 50 0.41
Native Hawaiian And Pacific Islander Alone 0 0.00
Some Other Race Alone 93 0.77
Two Or More Races 748 6.19
Jefferson, MT Population of Ethnicity Groups in Census 2020
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Ethnicity Population % of County Population
Non-Hispanic - White Alone 10926 90.41
Non-Hispanic - Two or More Races 600 4.97
Non-Hispanic - American Indian & Alaska Native 161 1.33
Hispanic - Two or More Races 148 1.23
Hispanic - White Alone 90 0.75
Hispanic - Some Other Race Alone 50 0.41
Non-Hispanic - Asian Alone 49 0.41
Non-Hispanic - Some Other Race Alone 43 0.36
Non-Hispanic - Black Alone 15 0.12
Hispanic - Black Alone 1 0.01
Hispanic - American Indian & Alaska Native 1 0.01
Hispanic - Asian Alone 1 0.01
Non-Hispanic - Native Hawaiian & Pac. Islander 0 0.00
Hispanic - Native Hawaiian & Pac. Islander 0 0.00