In 2023, Marshall County, SD had a population of 4.36k people with a median age of 42.8 and a median household income of $72,500. Between 2022 and 2023 the population of Marshall County, SD declined from 4,363 to 4,355, a −0.183% decrease and its median household income declined from $74,018 to $72,500, a −2.05% decrease.
The 5 largest ethnic groups in Marshall County, SD are White (Non-Hispanic) (84.3%), American Indian & Alaska Native (Non-Hispanic) (6.45%), Two+ (Non-Hispanic) (2.92%), Two+ (Hispanic) (2.41%), and White (Hispanic) (1.81%).
None of the households in Marshall 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.
98.5% of the residents in Marshall County, SD are U.S. citizens.
In 2023, the median property value in Marshall County, SD was $147,200, and the homeownership rate was 80.1%.
Most people in Marshall County, SD drove alone to work, and the average commute time was 16 minutes. The average car ownership in Marshall County, SD was 2 cars per household.
Marshall County, SD borders Richland County, ND, Sargent County, ND, Brown County, SD, Day County, SD, and Roberts County, SD.