Windham
- County:
- Judith Basin County
- County Seat:
- No
- Area (mi²):
- 0.416
- State:
- Montana
Windham is a CDP located in Judith Basin County, Montana. Windham has a 2025 population of 27 . Windham is currently growing at a rate of 3.85% annually but its population has decreased by -38.64% since the most recent census, which recorded a population of 44 in 2020.
The median age in Windham is 19.8 years: 15.5 years for males, and 21.3 years for females. For every 100 females there are 39.0 males.