Dewey County, SD — Demographics & Population
Population, age distribution, race & ethnicity, and education data
Population Overview
Source: Census Bureau ACS (2023)Total Population
5,230
Male
2,604
49.8%
Female
2,626
50.2%
Median Age
27.6 yrs
Avg Household Size
3.1
Foreign Born
0.4%
Race & Ethnicity
Source: Census Bureau ACS (2023)Age Distribution
Source: Census Bureau ACS (2023)Education
Source: Census Bureau ACS (2023)Bachelor's or Higher9.2%
High School or Higher30.5%
Other Demographics
Source: Census Bureau ACS (2023)Veterans
2.8%
Disability
0.0%
Non-English Home
7.0%
Married
25.3%
Dewey County, SD has a population of 5,230 according to 2023 Census Bureau estimates. The median age is 27.6 years. The largest racial or ethnic group is White at 20.2% of the population. 9.2% of residents hold a bachelor's degree or higher. 0.4% of residents are foreign-born.