In 2021, Mellette County, SD had a population of 1.92k people with a median age of 35.1 and a median household income of $35,726. Between 2020 and 2021 the population of Mellette County, SD declined from 2,065 to 1,916, a −7.22% decrease and its median household income grew from $33,882 to $35,726, a 5.44% increase.
The 5 largest ethnic groups in Mellette County, SD are American Indian & Alaska Native (Non-Hispanic) (62.7%), White (Non-Hispanic) (35%), Two+ (Non-Hispanic) (1.51%), White (Hispanic) (0.261%), and Native Hawaiian & Other Pacific Islander (Non-Hispanic) (0.261%).
None of the households in Mellette County, SD reported speaking a non-English language at home as their primary shared language. This does not consider the potential multi-lingual nature of households, but only the primary self-reported language spoken by all members of the household.
100% of the residents in Mellette County, SD are U.S. citizens.
In 2021, the median property value in Mellette County, SD was $51,700, and the homeownership rate was 57.3%.
Most people in Mellette County, SD drove alone to work, and the average commute time was 19.4 minutes. The average car ownership in Mellette County, SD was 3 cars per household.
Mellette County, SD borders Bennett County, SD, Jackson County, SD, Jones County, SD, Lyman County, SD, Todd County, SD, and Tripp County, SD.