Ruma
- County:
- Monroe County
- County Seat:
- No
- Area (mi²):
- 0.742
- State:
- Illinois
Ruma is a village located in Monroe County, Illinois. Ruma has a 2026 population of 310. Ruma is currently declining at a rate of -0.32% annually and its population has decreased by -0.96% since the most recent census, which recorded a population of 313 in 2020.