In 2023, Buffalo County, SD had a population of 1.76k people with a median age of 26.2 and a median household income of $47,000. Between 2022 and 2023 the population of Buffalo County, SD declined from 1,859 to 1,757, a −5.49% decrease and its median household income grew from $42,917 to $47,000, a 9.51% increase.
The 5 largest ethnic groups in Buffalo County, SD are American Indian & Alaska Native (Non-Hispanic) (73.4%), White (Non-Hispanic) (21.2%), American Indian & Alaska Native (Hispanic) (1.59%), Two+ (Hispanic) (1.2%), and Two+ (Non-Hispanic) (1.14%).
None of the households in Buffalo 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 Buffalo County, SD are U.S. citizens.
In 2023, the median property value in Buffalo County, SD was $108,000, and the homeownership rate was 52.6%.
Most people in Buffalo County, SD drove alone to work, and the average commute time was 14.1 minutes. The average car ownership in Buffalo County, SD was 2 cars per household.
Buffalo County, SD borders Brule County, SD, Hand County, SD, Hyde County, SD, Jerauld County, SD, and Lyman County, SD.