In 2023, Porcupine, SD had a population of 549 people with a median age of 32.5 and a median household income of $20,256. Between 2022 and 2023 the population of Porcupine, SD declined from 1,021 to 549, a −46.2% decrease and its median household income grew from $18,750 to $20,256, a 8.03% increase.
The 5 largest ethnic groups in Porcupine, SD are American Indian & Alaska Native (Non-Hispanic) (90%), Other (Hispanic) (8.01%), White (Non-Hispanic) (2%), White (Hispanic) (0%), and Black or African American (Non-Hispanic) (0%).
None of the households in Porcupine, 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 Porcupine, SD are U.S. citizens.
Most people in Porcupine, SD carpooled to work, and the average commute time was 23.1 minutes. The average car ownership in Porcupine, SD was 2 cars per household.