Bainville
- County:
- Roosevelt County
- County Seat:
- No
- Area (mi²):
- 1.264
- State:
- Montana
Bainville is a town located in Roosevelt County, Montana. Bainville has a 2026 population of 261. Bainville is currently declining at a rate of -1.51% annually and its population has decreased by -5.09% since the most recent census, which recorded a population of 275 in 2020.
The median household income in Bainville is $92,917 with a poverty rate of 0.62%. The median age in Bainville is 36.1 years: 36.1 years for males, and 36.1 years for females. For every 100 females there are 122.7 males.