Glendo
- County:
- Perkins County
- County Seat:
- No
- Area (mi²):
- 35.231
- State:
- South Dakota
Glendo is located in Perkins County, South Dakota. Glendo has a 2025 population of 11. Glendo 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 11 in 2020.
The median age in Glendo is 69.3 years: 0 years for males, and 0 years for females.