Population By Race and Ethnicity in Dewey County, SD in 2020

Updated on August 1, 2024.

Based on the US Census Vintage data estimates, in 2020, the 5,225 population of Dewey County, South Dakota comprised of 59 people who identified as Hispanic (1.13%), and 5,166 people who identified as Non-Hispanic (98.87%).

Race: The American Indian and Alaska Native Alone population was the largest racial group in Dewey County, South Dakota with a population of 3,865 (73.97%); White Alone population was the second largest racial group with a population of 1,063 (20.34%); and Two Or More Races was the third largest racial group with a population of 256 (4.9%).

Ethnicity: The American Indian and Alaska Native Alone - Non Hispanic population was the largest ethnic group in Dewey County, South Dakota in 2020, with a population of 3,812 (72.96%); the second largest ethnic group was White Alone - Non Hispanic with a population of 1,060 (20.29%); and the third largest ethnic group was Two Or More Races - Non Hispanic with a population of 255 (4.88%).

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 2020
Total Population:5,225
98.87%
Non Hispanic (98.87%)
Hispanic (1.13%)
Race in Dewey County, SD in 2020
Total Population:5,225
73.97%20.34%
American Indian and Alaska Native Alone (73.97%)
White Alone (20.34%)
Two or more races (4.9%)
Black or African American Alone (0.46%)
Asian Alone (0.29%)
Native Hawaiian And Pacific Islander Alone (0.04%)
Ethnicity in Dewey County, SD in 2020
Total Population:5,225
72.96%20.29%
Non-Hispanic American Indian and Alaska Native Alone (72.96%)
Non-Hispanic White Alone (20.29%)
Non-Hispanic Two or more races (4.88%)
Hispanic American Indian and Alaska Native Alone (1.01%)
Non-Hispanic Black or African American Alone (0.44%)
All Other Ethnicities (0.42%)
Population By Race in Dewey , SD in 2020
Race
Population
Percentage
American Indian and Alaska Native Alone 3,865 73.97%
White Alone 1,063 20.34%
Two Or More Races 256 4.9%
Black or African American Alone 24 0.46%
Asian Alone 15 0.29%
Native Hawaiian And Pacific Islander Alone 2 0.04%
Population By Ethnicity in Dewey , SD in 2020
Ethnicity
Population
Percentage
American Indian and Alaska Native Alone - Non Hispanic 3,812 72.96%
White Alone - Non Hispanic 1,060 20.29%
Two Or More Races - Non Hispanic 255 4.88%
American Indian and Alaska Native Alone - Hispanic 53 1.01%
Black or African American Alone - Non Hispanic 23 0.44%
Asian Alone - Non Hispanic 14 0.27%
White Alone - Hispanic 3 0.06%
Native Hawaiian And Pacific Islander Alone - Non Hispanic 2 0.04%
Black or African American Alone - Hispanic 1 0.02%
Asian Alone - Hispanic 1 0.02%
Two Or More Races - Hispanic 1 0.02%
Native Hawaiian And Pacific Islander Alone - Hispanic 0 0%