In 2019, Sioux County, ND had a population of 4.37k people with a median age of 28.2 and a median household income of $38,939. Between 2018 and 2019 the population of Sioux County, ND declined from 4,413 to 4,373, a −0.906% decrease and its median household income declined from $40,862 to $38,939, a −4.71% decrease.
The 5 largest ethnic groups in Sioux County, ND are American Indian & Alaska Native (Non-Hispanic) (80.6%), White (Non-Hispanic) (12.6%), American Indian & Alaska Native (Hispanic) (2.72%), Two+ (Non-Hispanic) (1.81%), and Other (Hispanic) (0.732%). 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 2019, the median property value in Sioux County, ND was $83,800, and the homeownership rate was 43.4%. Most people in Sioux County, ND drove alone to work, and the average commute time was 17.1 minutes. The average car ownership in Sioux County, ND was 2 cars per household.