Big Stone Colony
- County:
- Cascade County
- County Seat:
- No
- Area (mi²):
- 0.942
- State:
- Montana
Big Stone Colony is a CDP located in Cascade County, Montana. Big Stone Colony has a 2025 population of 39. Big Stone Colony is currently growing at a rate of 8.33% annually but its population has decreased by -65.49% since the most recent census, which recorded a population of 113 in 2020.
The median age in Big Stone Colony is 37.6 years: 37.9 years for males, and 0 years for females.