Population By Race and Ethnicity in Jefferson County, MT in 2015

Updated on January 29, 2024.

Based on the US Census Vintage data estimates, in 2015, the 11,576 population of Jefferson County, Montana comprised of 267 people who identified as Hispanic (2.31%), and 11,309 people who identified as Non-Hispanic (97.69%).

Race: The White Alone population was the largest racial group in Jefferson County, Montana with a population of 11,006 (95.08%); Two Or More Races population was the second largest racial group with a population of 267 (2.31%); and American Indian and Alaska Native Alone was the third largest racial group with a population of 201 (1.74%).

Ethnicity: The White Alone - Non Hispanic population was the largest ethnic group in Jefferson County, Montana in 2015, with a population of 10,779 (93.12%); the second largest ethnic group was Two Or More Races - Non Hispanic with a population of 249 (2.15%); and the third largest ethnic group was White Alone - Hispanic with a population of 227 (1.96%).

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 2015
Total Population:
Race in Jefferson County, MT in 2015
Total Population:
Ethnicity in Jefferson County, MT in 2015
Total Population:
Population By Race in Jefferson , MT in 2015
Race Population Percentage
Black or African American Alone 44 0.38%
White Alone 11,006 95.08%
American Indian and Alaska Native Alone 201 1.74%
Asian Alone 56 0.48%
Native Hawaiian And Pacific Islander Alone 2 0.02%
Two Or More Races 267 2.31%
Population By Ethnicity in Jefferson , MT in 2015
Ethnicity Population Percentage
Black or African American Alone - Hispanic 3 0.03%
White Alone - Hispanic 227 1.96%
American Indian and Alaska Native Alone - Hispanic 18 0.16%
Asian Alone - Hispanic 1 0.01%
Native Hawaiian And Pacific Islander Alone - Hispanic 0 0%
Two Or More Races - Hispanic 18 0.16%
Black or African American Alone - Non Hispanic 41 0.35%
White Alone - Non Hispanic 10,779 93.12%
American Indian and Alaska Native Alone - Non Hispanic 183 1.58%
Asian Alone - Non Hispanic 55 0.48%
Native Hawaiian And Pacific Islander Alone - Non Hispanic 2 0.02%
Two Or More Races - Non Hispanic 249 2.15%