Clay County, SD — Demographics & Population
Population, age distribution, race & ethnicity, and education data
Population Overview
Source: Census Bureau ACS (2023)Total Population
15,133
Male
7,493
49.5%
Female
7,640
50.5%
Median Age
24.5 yrs
Avg Household Size
2.3
Foreign Born
4.9%
Race & Ethnicity
Source: Census Bureau ACS (2023)Age Distribution
Source: Census Bureau ACS (2023)Education
Source: Census Bureau ACS (2023)Bachelor's or Higher22.5%
High School or Higher35.2%
Other Demographics
Source: Census Bureau ACS (2023)Veterans
3.8%
Disability
0.0%
Non-English Home
3.0%
Married
29.3%
Clay County, SD has a population of 15,133 according to 2023 Census Bureau estimates. The median age is 24.5 years. The largest racial or ethnic group is White at 86.7% of the population. 22.5% of residents hold a bachelor's degree or higher. 4.9% of residents are foreign-born.