Big Arm
- County:
- Lake County
- County Seat:
- No
- Area (mi²):
- 5.419
- State:
- Montana
Big Arm is a CDP located in Lake County, Montana Montana. Unfortunately, the data for this location is currently limited or unavailable.
The median age in Big Arm is 29.9 years: 40.7 years for males, and 29.7 years for females. For every 100 females there are 120.9 males.