In 2017, Mellette County, SD had a population of 2.06k people with a median age of 32.8 and a median household income of $31,165. Between 2016 and 2017 the population of Mellette County, SD declined from 2,083 to 2,062, a -1.01% decrease and its median household income grew from $29,471 to $31,165, a 5.75% increase.
The 5 largest ethnic groups in Mellette County, SD are American Indian & Alaska Native (Non-Hispanic) (53%), White (Non-Hispanic) (41.1%), American Indian & Alaska Native (Hispanic) (4.75%), Two or More Races (Non-Hispanic) (0.727%), and White (Hispanic) (0.291%). N/A% of the people in Mellette County, SD speak a non-English language, and 99.7% are U.S. citizens.
The median property value in Mellette County, SD is $45,300, and the homeownership rate is 67.6%. Most people in Mellette County, SD commute by Drove Alone, and the average commute time is 19.5 minutes. The average car ownership in Mellette County, SD is 2 cars per household.