In 2023, Mount Vernon, SD had a population of 437 people with a median age of 28.9 and a median household income of $58,542. Between 2022 and 2023 the population of Mount Vernon, SD declined from 483 to 437, a −9.52% decrease and its median household income grew from $55,833 to $58,542, a 4.85% increase.
The 5 largest ethnic groups in Mount Vernon, SD are White (Non-Hispanic) (94.1%), American Indian & Alaska Native (Non-Hispanic) (3.2%), Two+ (Non-Hispanic) (2.75%), White (Hispanic) (0%), and Black or African American (Non-Hispanic) (0%).
None of the households in Mount Vernon, 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 Mount Vernon, SD are U.S. citizens.
In 2023, the median property value in Mount Vernon, SD was $163,100, and the homeownership rate was 59.6%.
Most people in Mount Vernon, SD drove alone to work, and the average commute time was 20.1 minutes. The average car ownership in Mount Vernon, SD was 2 cars per household.