
Wagner
- County:
- Charles Mix County
- County Seat:
- No
- Area (mi²):
- 1.858
- State:
- South Dakota
Wagner is a city located in Charles Mix County, South Dakota. Wagner has a 2025 population of 1,387. Wagner is currently declining at a rate of -1.35% annually and its population has decreased by -6.54% since the most recent census, which recorded a population of 1,484 in 2020.
The average household income in Wagner is $65,104 with a poverty rate of 15.2%. The median age in Wagner is 38.8 years: 31.8 years for males, and 50.2 years for females.