St. Charles
- County:
- Gregory County
- County Seat:
- No
- Area (mi²):
- 0.197
- State:
- South Dakota
St. Charles is a CDP located in Gregory County, South Dakota South Dakota. Unfortunately, the data for this location is currently limited or unavailable.
The median age in St. Charles is 67 years: 0 years for males, and 0 years for females. For every 100 females there are 100.0 males.