Population By Race and Ethnicity in St. Charles County, MO in 2020

Updated on January 29, 2024.

Based on the US Census Vintage data estimates, in 2020, the 406,385 population of St. Charles County, Missouri comprised of 14,444 people who identified as Hispanic (3.55%), and 391,941 people who identified as Non-Hispanic (96.45%).

Race: The White Alone population was the largest racial group in St. Charles County, Missouri with a population of 362,935 (89.31%); Black or African American Alone population was the second largest racial group with a population of 21,919 (5.39%); and Asian Alone was the third largest racial group with a population of 11,494 (2.83%).

Ethnicity: The White Alone - Non Hispanic population was the largest ethnic group in St. Charles County, Missouri in 2020, with a population of 350,207 (86.18%); the second largest ethnic group was Black or African American Alone - Non Hispanic with a population of 21,397 (5.27%); and the third largest ethnic group was White Alone - Hispanic with a population of 12,728 (3.13%).

The charts and tables below shows the population and percentage of each racial and ethnicity group in St. Charles, Missouri.

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

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Hispanics and Non Hispanics in St. Charles County, MO in 2020
Total Population:
Race in St. Charles County, MO in 2020
Total Population:
Ethnicity in St. Charles County, MO in 2020
Total Population:
Population By Race in St. Charles , MO in 2020
Race Population Percentage
Black or African American Alone 21,919 5.39%
White Alone 362,935 89.31%
American Indian and Alaska Native Alone 981 0.24%
Asian Alone 11,494 2.83%
Native Hawaiian And Pacific Islander Alone 256 0.06%
Two Or More Races 8,800 2.17%
Population By Ethnicity in St. Charles , MO in 2020
Ethnicity Population Percentage
Black or African American Alone - Hispanic 522 0.13%
White Alone - Hispanic 12,728 3.13%
American Indian and Alaska Native Alone - Hispanic 323 0.08%
Asian Alone - Hispanic 171 0.04%
Native Hawaiian And Pacific Islander Alone - Hispanic 84 0.02%
Two Or More Races - Hispanic 616 0.15%
Black or African American Alone - Non Hispanic 21,397 5.27%
White Alone - Non Hispanic 350,207 86.18%
American Indian and Alaska Native Alone - Non Hispanic 658 0.16%
Asian Alone - Non Hispanic 11,323 2.79%
Native Hawaiian And Pacific Islander Alone - Non Hispanic 172 0.04%
Two Or More Races - Non Hispanic 8,184 2.01%