
Grass Ranch Colony
- County:
- Brule County
- County Seat:
- No
- Area (mi²):
- 1.064
- State:
- South Dakota
Grass Ranch Colony is a CDP located in Brule County, South Dakota. Grass Ranch Colony has a 2025 population of 63. Grass Ranch Colony is currently declining at a rate of -18.18% annually and its population has decreased by -18.18% since the most recent census, which recorded a population of 77 in 2020.
The average household income in Grass Ranch Colony is $0 with a poverty rate of 0%. The median age in Grass Ranch Colony is 0 years: 0 years for males, and 0 years for females.