
Waubay
- County:
- Day County
- County Seat:
- No
- Area (mi²):
- 1.456
- State:
- South Dakota
Waubay is a city located in Day County, South Dakota. Waubay has a 2025 population of 475. Waubay 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 475 in 2020.
The average household income in Waubay is $58,056 with a poverty rate of 9.18%. The median age in Waubay is 51.7 years: 39.6 years for males, and 61.7 years for females.