In 2022, Allen, SD had a population of 926 people with a median age of 17.6 and a median household income of $11,705. Between 2021 and 2022 the population of Allen, SD grew from 732 to 926, a 26.5% increase and its median household income N/A from N/A to $11,705, a N/A% N/A.
The 5 largest ethnic groups in Allen, SD are American Indian & Alaska Native (Non-Hispanic) (87.5%), American Indian & Alaska Native (Hispanic) (12.5%), White (Non-Hispanic) (0%), White (Hispanic) (0%), and Black or African American (Non-Hispanic) (0%).
None of the households in Allen, 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 Allen, SD are U.S. citizens.
Most people in Allen, SD drove alone to work, and the average commute time was 8.97 minutes. The average car ownership in Allen, SD was 1 car per household.