In 2018, Clay County, SD had a population of 13.9k people with a median age of 25 and a median household income of $43,189. Between 2017 and 2018 the population of Clay County, SD grew from 13,907 to 13,925, a 0.129% increase and its median household income grew from $41,773 to $43,189, a 3.39% increase.
The 5 largest ethnic groups in Clay County, SD are White (Non-Hispanic) (87.7%), American Indian & Alaska Native (Non-Hispanic) (3.95%), Asian (Non-Hispanic) (2.59%), Two+ (Non-Hispanic) (1.84%), and White (Hispanic) (1.38%). NaNk% of the people in Clay County, SD speak a non-English language, and 97.7% 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 $157,600, and the homeownership rate is 51.1%. Most people in Clay County, SD commute by Drove Alone, and the average commute time is 13.9 minutes. The average car ownership in Clay County, SD is 2 cars per household.