In 2017, Clay County, SD had a population of 13.9k people with a median age of 25 and a median household income of $41,773. Between 2016 and 2017 the population of Clay County, SD declined from 14,029 to 13,907, a -0.87% decrease and its median household income grew from $38,399 to $41,773, a 8.79% increase.
The 5 largest ethnic groups in Clay County, SD are White (Non-Hispanic) (88.2%), American Indian & Alaska Native (Non-Hispanic) (2.88%), Asian (Non-Hispanic) (2.46%), Two or More Races (Non-Hispanic) (2.25%), and White (Hispanic) (1.47%). N/A% of the people in Clay County, SD speak a non-English language, and 97.6% are U.S. citizens.
The largest universities in Clay County, SD are University of South Dakota (2,205 degrees awarded in 2017).
The median property value in Clay County, SD is $146,400, and the homeownership rate is 51.6%. Most people in Clay County, SD commute by Drove Alone, and the average commute time is 14.1 minutes. The average car ownership in Clay County, SD is 2 cars per household.