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 population of Clay County, SD is 88.2% White Alone, 2.88% American Indian & Alaska Native Alone, and 2.74% Hispanic or Latino. 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 (2,224 degrees awarded in 2016).
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.