Hillside
- County:
- Edmunds County
- County Seat:
- No
- Area (mi²):
- 34.127
- State:
- South Dakota
Hillside is located in Edmunds County, South Dakota. Hillside has a 2025 population of 32 . Hillside is currently declining at a rate of 0% annually and its population has decreased by 0% since the most recent census, which recorded a population of 32 in 2020.
The median age in Hillside is 14.4 years: 7.9 years for males, and 14.6 years for females. For every 100 females there are 84.2 males.