Viola is located in Mercer County. About 869 people live here (as of 2020). Between 2010 and 2020, the population declined from 955 to 869. The region is at 241 meters above sea level. There are about 40 streets in Viola. The postal codes are 61486. Viola is village in Mercer County, Illinois, United States.
| Area | 0.9 |
| Elevation | 241 m |
| Located in | Mercer County |
| Postal code | 61486 |
| Country | United States |
| Population | 869 |
| Official name | Viola |
| Bike path |
| Bike lane on roadway |
| Cycling allowed on bus lane |
| Bicycle street |
| Open to cyclists |
| Open to cyclists, good path |
| Cycling prohibited |
| Cobblestone |
| Long-distance bike route | (depending on scale) |
| Long-distance bike route |
| Long-distance hiking trail | (depending on scale) |
| Long-distance hiking trail |
| Pedestrians prohibited |
Public transit map Viola Legend 
Bicycle map Viola Legend 
Pedestrian map Viola Legend