Pierre
- County:
- Hughes County
- County Seat:
- No
- Area (mi²):
- 13.027
- State:
- South Dakota
Pierre is a city located in Hughes County, South Dakota. Pierre has a 2026 population of 13,788. Pierre is currently declining at a rate of -0.69% annually and its population has decreased by -1.98% since the most recent census, which recorded a population of 14,067 in 2020.