In 2018, Sioux County, ND had a population of 4.41k people with a median age of 28.2 and a median household income of $40,862. Between 2017 and 2018 the population of Sioux County, ND declined from 4,420 to 4,413, a -0.158% decrease and its median household income grew from $40,795 to $40,862, a 0.164% increase.
The 5 largest ethnic groups in Sioux County, ND are American Indian & Alaska Native (Non-Hispanic) (81.1%), White (Non-Hispanic) (12.6%), American Indian & Alaska Native (Hispanic) (2.56%), Two+ (Non-Hispanic) (1.74%), and Two+ (Hispanic) (0.634%). 0% of the households in Sioux County, ND speak a non-English language at home as their primary language, and 100% of the residents in Sioux County, ND are U.S. citizens.
The largest universities in Sioux County, ND are Sitting Bull College (71 degrees awarded in 2019).
In 2018, the median property value in Sioux County, ND was $83,000, and the homeownership rate was 45.2%. Most people in Sioux County, ND drove alone to work, and the average commute time was 16.1 minutes. The average car ownership in Sioux County, ND was 2 cars per household.