Green Grass
- County:
- Dewey County
- County Seat:
- No
- Area (mi²):
- 8.133
- State:
- South Dakota
Green Grass is a CDP located in Dewey County, South Dakota South Dakota. Unfortunately, the data for this location is currently limited or unavailable.
The median age in Green Grass is 20.5 years: 22.3 years for males, and 18.6 years for females. For every 100 females there are 122.9 males.