In 2018, Ziebach County, SD had a population of 2.81k people with a median age of 31.6 and a median household income of $37,143. Between 2017 and 2018 the population of Ziebach County, SD declined from 2,837 to 2,814, a -0.811% decrease and its median household income grew from $35,000 to $37,143, a 6.12% increase.
The 5 largest ethnic groups in Ziebach County, SD are American Indian & Alaska Native (Non-Hispanic) (74.8%), White (Non-Hispanic) (23.6%), Two+ (Non-Hispanic) (0.711%), Asian (Non-Hispanic) (0.533%), and American Indian & Alaska Native (Hispanic) (0.142%). 0% of the households in Ziebach County, SD speak a non-English language at home as their primary language, and 99.5% of the residents in Ziebach County, SD are U.S. citizens.
In 2018, the median property value in Ziebach County, SD was $56,900, and the homeownership rate was 57.4%. Most people in Ziebach County, SD drove alone to work, and the average commute time was 16.6 minutes. The average car ownership in Ziebach County, SD was 2 cars per household.