In 2021, Stanley County, SD had a population of 2.96k people with a median age of 43.3 and a median household income of $76,402. Between 2020 and 2021 the population of Stanley County, SD declined from 3,058 to 2,963, a −3.11% decrease and its median household income grew from $71,602 to $76,402, a 6.7% increase.
The 5 largest ethnic groups in Stanley County, SD are White (Non-Hispanic) (86.8%), White (Hispanic) (4.25%), American Indian & Alaska Native (Non-Hispanic) (3.37%), Two+ (Non-Hispanic) (3%), and Native Hawaiian & Other Pacific Islander (Non-Hispanic) (1.25%).
None of the households in Stanley 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 Stanley County, SD are U.S. citizens.
In 2021, the median property value in Stanley County, SD was $159,200, and the homeownership rate was 83.1%.
Most people in Stanley County, SD drove alone to work, and the average commute time was 15.7 minutes. The average car ownership in Stanley County, SD was 2 cars per household.
Stanley County, SD borders Dewey County, SD, Haakon County, SD, Hughes County, SD, Jones County, SD, Lyman County, SD, Sully County, SD, and Ziebach County, SD.