Day County, SD — Demographics & Population
Population, age distribution, race & ethnicity, and education data
Population Overview
Source: Census Bureau ACS (2023)Total Population
5,460
Male
2,748
50.3%
Female
2,712
49.7%
Median Age
47.1 yrs
Avg Household Size
2.3
Foreign Born
0.6%
Race & Ethnicity
Source: Census Bureau ACS (2023)Age Distribution
Source: Census Bureau ACS (2023)Education
Source: Census Bureau ACS (2023)Bachelor's or Higher15.2%
High School or Higher39.5%
Other Demographics
Source: Census Bureau ACS (2023)Veterans
7.5%
Disability
0.0%
Non-English Home
5.8%
Married
42.0%
Day County, SD has a population of 5,460 according to 2023 Census Bureau estimates. The median age is 47.1 years. The largest racial or ethnic group is White at 85.4% of the population. 15.2% of residents hold a bachelor's degree or higher. 0.6% of residents are foreign-born.