Interior is a town located in Jackson County, South Dakota. Interior has a 2025 population of 65 . Interior is currently declining at a rate of -1.52% annually and its population has decreased by -2.99% since the most recent census, which recorded a population of 67 in 2020.
The median age in Interior is 54.6 years: 54.9 years for males, and 46.7 years for females. For every 100 females there are 120.8 males.
Data after 2023 is projected based on recent change
The racial composition of Interior includes 84.91% White, 15.09% Native American, and smaller percentages for and multiracial populations.
White (84.91%)
Native American (15.09%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 45 | 84.91% |
| Native American | 8 | 15.09% |
Married
Widowed
Divorced
Separated
Never Married