In 2023, Mellette, SD had a population of 144 people with a median age of 49 and a median household income of $104,375. Between 2022 and 2023 the population of Mellette, SD declined from 176 to 144, a −18.2% decrease and its median household income grew from $71,563 to $104,375, a 45.9% increase.
The 5 largest ethnic groups in Mellette, SD are White (Non-Hispanic) (97.2%), Other (Non-Hispanic) (2.78%), White (Hispanic) (0%), Black or African American (Non-Hispanic) (0%), and Black or African American (Hispanic) (0%).
None of the households in Mellette, 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.
97.2% of the residents in Mellette, SD are U.S. citizens.
In 2023, the median property value in Mellette, SD was $151,400, and the homeownership rate was 88.1%.
Most people in Mellette, SD drove alone to work, and the average commute time was 20.3 minutes. The average car ownership in Mellette, SD was 2 cars per household.