Population By Race and Ethnicity in Dewey County, SD in 2015

Updated on January 29, 2024.

Based on the US Census Vintage data estimates, in 2015, the 5,702 population of Dewey County, South Dakota comprised of 210 people who identified as Hispanic (3.68%), and 5,492 people who identified as Non-Hispanic (96.32%).

Race: The American Indian and Alaska Native Alone population was the largest racial group in Dewey County, South Dakota with a population of 4,246 (74.47%); White Alone population was the second largest racial group with a population of 1,203 (21.1%); and Two Or More Races was the third largest racial group with a population of 218 (3.82%).

Ethnicity: The American Indian and Alaska Native Alone - Non Hispanic population was the largest ethnic group in Dewey County, South Dakota in 2015, with a population of 4,108 (72.05%); the second largest ethnic group was White Alone - Non Hispanic with a population of 1,151 (20.19%); and the third largest ethnic group was Two Or More Races - Non Hispanic with a population of 202 (3.54%).

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 2015
Total Population:
Race in Dewey County, SD in 2015
Total Population:
Ethnicity in Dewey County, SD in 2015
Total Population:
Population By Race in Dewey , SD in 2015
Race Population Percentage
Black or African American Alone 21 0.37%
White Alone 1,203 21.1%
American Indian and Alaska Native Alone 4,246 74.47%
Asian Alone 13 0.23%
Native Hawaiian And Pacific Islander Alone 1 0.02%
Two Or More Races 218 3.82%
Population By Ethnicity in Dewey , SD in 2015
Ethnicity Population Percentage
Black or African American Alone - Hispanic 3 0.05%
White Alone - Hispanic 52 0.91%
American Indian and Alaska Native Alone - Hispanic 138 2.42%
Asian Alone - Hispanic 1 0.02%
Native Hawaiian And Pacific Islander Alone - Hispanic 0 0%
Two Or More Races - Hispanic 16 0.28%
Black or African American Alone - Non Hispanic 18 0.32%
White Alone - Non Hispanic 1,151 20.19%
American Indian and Alaska Native Alone - Non Hispanic 4,108 72.05%
Asian Alone - Non Hispanic 12 0.21%
Native Hawaiian And Pacific Islander Alone - Non Hispanic 1 0.02%
Two Or More Races - Non Hispanic 202 3.54%