In 2023, Marty, SD had a population of 257 people with a median age of 32.7 and a median household income of $19,740. Between 2022 and 2023 the population of Marty, SD grew from 197 to 257, a 30.5% increase and its median household income grew from $19,519 to $19,740, a 1.13% increase.
The 5 largest ethnic groups in Marty, SD are American Indian & Alaska Native (Non-Hispanic) (100%), White (Non-Hispanic) (0%), Black or African American (Non-Hispanic) (0%), Asian (Non-Hispanic) (0%), and Native Hawaiian & Other Pacific Islander (Non-Hispanic) (0%).
None of the households in Marty, 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 Marty, SD are U.S. citizens.