In 2017, Day County, SD had a population of 5.52k people with a median age of 48.4 and a median household income of $43,902. Between 2016 and 2017 the population of Day County, SD declined from 5,588 to 5,524, a -1.15% decrease and its median household income grew from $40,647 to $43,902, a 8.01% increase.
The population of Day County, SD is 86.3% White Alone, 9.97% American Indian & Alaska Native Alone, and 2.01% Hispanic or Latino. N/A% of the people in Day County, SD speak a non-English language, and 99.7% are U.S. citizens.
The median property value in Day County, SD is $86,000, and the homeownership rate is 73%. Most people in Day County, SD commute by Drove Alone, and the average commute time is 16.3 minutes. The average car ownership in Day County, SD is 2 cars per household.