Population By Race and Ethnicity in Lewis and Clark County, MT in 2020

Updated on January 29, 2024.

Based on the US Census Vintage data estimates, in 2020, the 71,168 population of Lewis and Clark County, Montana comprised of 2,578 people who identified as Hispanic (3.62%), and 68,590 people who identified as Non-Hispanic (96.38%).

Race: The White Alone population was the largest racial group in Lewis and Clark County, Montana with a population of 66,775 (93.83%); Two Or More Races population was the second largest racial group with a population of 1,872 (2.63%); and American Indian and Alaska Native Alone was the third largest racial group with a population of 1,543 (2.17%).

Ethnicity: The White Alone - Non Hispanic population was the largest ethnic group in Lewis and Clark County, Montana in 2020, with a population of 64,699 (90.91%); the second largest ethnic group was White Alone - Hispanic with a population of 2,076 (2.92%); and the third largest ethnic group was Two Or More Races - Non Hispanic with a population of 1,675 (2.35%).

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 2020
Total Population:
Race in Lewis and Clark County, MT in 2020
Total Population:
Ethnicity in Lewis and Clark County, MT in 2020
Total Population:
Population By Race in Lewis and Clark , MT in 2020
Race Population Percentage
Black or African American Alone 348 0.49%
White Alone 66,775 93.83%
American Indian and Alaska Native Alone 1,543 2.17%
Asian Alone 571 0.8%
Native Hawaiian And Pacific Islander Alone 59 0.08%
Two Or More Races 1,872 2.63%
Population By Ethnicity in Lewis and Clark , MT in 2020
Ethnicity Population Percentage
Black or African American Alone - Hispanic 39 0.06%
White Alone - Hispanic 2,076 2.92%
American Indian and Alaska Native Alone - Hispanic 228 0.32%
Asian Alone - Hispanic 20 0.03%
Native Hawaiian And Pacific Islander Alone - Hispanic 18 0.03%
Two Or More Races - Hispanic 197 0.28%
Black or African American Alone - Non Hispanic 309 0.43%
White Alone - Non Hispanic 64,699 90.91%
American Indian and Alaska Native Alone - Non Hispanic 1,315 1.85%
Asian Alone - Non Hispanic 551 0.77%
Native Hawaiian And Pacific Islander Alone - Non Hispanic 41 0.06%
Two Or More Races - Non Hispanic 1,675 2.35%