Population By Race and Ethnicity in Dewey County, SD in 2021

Updated on January 29, 2024.

Based on the US Census Vintage data estimates, in 2021, the 5,218 population of Dewey County, South Dakota comprised of 248 people who identified as Hispanic (4.75%), and 4,970 people who identified as Non-Hispanic (95.25%).

Race: The American Indian and Alaska Native Alone population was the largest racial group in Dewey County, South Dakota with a population of 3,837 (73.53%); White Alone population was the second largest racial group with a population of 1,033 (19.8%); and Two Or More Races was the third largest racial group with a population of 295 (5.65%).

Ethnicity: The American Indian and Alaska Native Alone - Non Hispanic population was the largest ethnic group in Dewey County, South Dakota in 2021, with a population of 3,667 (70.28%); the second largest ethnic group was White Alone - Non Hispanic with a population of 978 (18.74%); and the third largest ethnic group was Two Or More Races - Non Hispanic with a population of 278 (5.33%).

The charts and tables below shows the population and percentage of each racial and ethnicity group in Dewey, South Dakota.

You can find similar information for other South Dakota counties, and for South Dakota.

See this for other years:
Hispanics and Non Hispanics in Dewey County, SD in 2021
Total Population:
Race in Dewey County, SD in 2021
Total Population:
Ethnicity in Dewey County, SD in 2021
Total Population:
Population By Race in Dewey , SD in 2021
Race Population Percentage
Black or African American Alone 33 0.63%
White Alone 1,033 19.8%
American Indian and Alaska Native Alone 3,837 73.53%
Asian Alone 18 0.35%
Native Hawaiian And Pacific Islander Alone 2 0.04%
Two Or More Races 295 5.65%
Population By Ethnicity in Dewey , SD in 2021
Ethnicity Population Percentage
Black or African American Alone - Hispanic 5 0.1%
White Alone - Hispanic 55 1.05%
American Indian and Alaska Native Alone - Hispanic 170 3.26%
Asian Alone - Hispanic 1 0.02%
Native Hawaiian And Pacific Islander Alone - Hispanic 0 0%
Two Or More Races - Hispanic 17 0.33%
Black or African American Alone - Non Hispanic 28 0.54%
White Alone - Non Hispanic 978 18.74%
American Indian and Alaska Native Alone - Non Hispanic 3,667 70.28%
Asian Alone - Non Hispanic 17 0.33%
Native Hawaiian And Pacific Islander Alone - Non Hispanic 2 0.04%
Two Or More Races - Non Hispanic 278 5.33%