In 2023, Erwin, SD had a population of 50 people with a median age of 55.5 and a median household income of $53,750. Between 2022 and 2023 the population of Erwin, SD grew from 39 to 50, a 28.2% increase and its median household income grew from $46,250 to $53,750, a 16.2% increase.
The 5 largest ethnic groups in Erwin, SD are White (Non-Hispanic) (100%), White (Hispanic) (0%), Black or African American (Non-Hispanic) (0%), Black or African American (Hispanic) (0%), and American Indian & Alaska Native (Non-Hispanic) (0%).
None of the households in Erwin, 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 Erwin, SD are U.S. citizens.
In 2023, the median property value in Erwin, SD was $45,000, and the homeownership rate was 100%.
Most people in Erwin, SD drove alone to work, and the average commute time was 32.8 minutes. The average car ownership in Erwin, SD was 2 cars per household.