Butler
- County:
- Montgomery County
- County Seat:
- No
- Area (mi²):
- 0.596
- State:
- Illinois
Butler is a village located in Montgomery County, Illinois. Butler has a 2026 population of 163. Butler is currently growing at a rate of 0.62% annually but its population has decreased by -1.21% since the most recent census, which recorded a population of 165 in 2020.