Population By Race and Ethnicity in Lewis and Clark County, MT in 2021

Updated on August 1, 2024.

Based on the US Census Vintage data estimates, in 2021, the 72,507 population of Lewis and Clark County, Montana comprised of 2,823 people who identified as Hispanic (3.89%), and 69,684 people who identified as Non-Hispanic (96.11%).

Race: The White Alone population was the largest racial group in Lewis and Clark County, Montana with a population of 67,989 (93.77%); Two Or More Races population was the second largest racial group with a population of 1,923 (2.65%); and American Indian and Alaska Native Alone was the third largest racial group with a population of 1,560 (2.15%).

Ethnicity: The White Alone - Non Hispanic population was the largest ethnic group in Lewis and Clark County, Montana in 2021, with a population of 65,723 (90.64%); the second largest ethnic group was White Alone - Hispanic with a population of 2,266 (3.13%); and the third largest ethnic group was Two Or More Races - Non Hispanic with a population of 1,715 (2.37%).

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

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

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Hispanics and Non Hispanics in Lewis and Clark County, MT in 2021
Total Population:
Race in Lewis and Clark County, MT in 2021
Total Population:
Ethnicity in Lewis and Clark County, MT in 2021
Total Population:
Population By Race in Lewis and Clark , MT in 2021
Race Population Percentage
Black or African American Alone 388 0.54%
White Alone 67,989 93.77%
American Indian and Alaska Native Alone 1,560 2.15%
Asian Alone 586 0.81%
Native Hawaiian And Pacific Islander Alone 61 0.08%
Two Or More Races 1,923 2.65%
Population By Ethnicity in Lewis and Clark , MT in 2021
Ethnicity Population Percentage
Black or African American Alone - Hispanic 45 0.06%
White Alone - Hispanic 2,266 3.13%
American Indian and Alaska Native Alone - Hispanic 264 0.36%
Asian Alone - Hispanic 23 0.03%
Native Hawaiian And Pacific Islander Alone - Hispanic 17 0.02%
Two Or More Races - Hispanic 208 0.29%
Black or African American Alone - Non Hispanic 343 0.47%
White Alone - Non Hispanic 65,723 90.64%
American Indian and Alaska Native Alone - Non Hispanic 1,296 1.79%
Asian Alone - Non Hispanic 563 0.78%
Native Hawaiian And Pacific Islander Alone - Non Hispanic 44 0.06%
Two Or More Races - Non Hispanic 1,715 2.37%