Interior
- County:
- Jackson County
- County Seat:
- No
- Area (mi²):
- 1.339
- State:
- South Dakota
Interior is a town located in Jackson County, South Dakota. Interior has a 2026 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 46.1 years: 33.3 years for males, and 46.4 years for females. For every 100 females there are 120.0 males.