Population By Race and Ethnicity in Lewis and Clark County, MT in 2018

Updated on January 29, 2024.

Based on the US Census Vintage data estimates, in 2018, the 68,775 population of Lewis and Clark County, Montana comprised of 2,427 people who identified as Hispanic (3.53%), and 66,348 people who identified as Non-Hispanic (96.47%).

Race: The White Alone population was the largest racial group in Lewis and Clark County, Montana with a population of 64,644 (93.99%); Two Or More Races population was the second largest racial group with a population of 1,693 (2.46%); and American Indian and Alaska Native Alone was the third largest racial group with a population of 1,518 (2.21%).

Ethnicity: The White Alone - Non Hispanic population was the largest ethnic group in Lewis and Clark County, Montana in 2018, with a population of 62,751 (91.24%); the second largest ethnic group was White Alone - Hispanic with a population of 1,893 (2.75%); and the third largest ethnic group was Two Or More Races - Non Hispanic with a population of 1,507 (2.19%).

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 2018
Total Population:
Race in Lewis and Clark County, MT in 2018
Total Population:
Ethnicity in Lewis and Clark County, MT in 2018
Total Population:
Population By Race in Lewis and Clark , MT in 2018
Race Population Percentage
Black or African American Alone 326 0.47%
White Alone 64,644 93.99%
American Indian and Alaska Native Alone 1,518 2.21%
Asian Alone 528 0.77%
Native Hawaiian And Pacific Islander Alone 66 0.1%
Two Or More Races 1,693 2.46%
Population By Ethnicity in Lewis and Clark , MT in 2018
Ethnicity Population Percentage
Black or African American Alone - Hispanic 39 0.06%
White Alone - Hispanic 1,893 2.75%
American Indian and Alaska Native Alone - Hispanic 267 0.39%
Asian Alone - Hispanic 19 0.03%
Native Hawaiian And Pacific Islander Alone - Hispanic 23 0.03%
Two Or More Races - Hispanic 186 0.27%
Black or African American Alone - Non Hispanic 287 0.42%
White Alone - Non Hispanic 62,751 91.24%
American Indian and Alaska Native Alone - Non Hispanic 1,251 1.82%
Asian Alone - Non Hispanic 509 0.74%
Native Hawaiian And Pacific Islander Alone - Non Hispanic 43 0.06%
Two Or More Races - Non Hispanic 1,507 2.19%