| Walnut Grove, Illinois | |
|---|---|
| Unincorporated community | |
| Coordinates: 40°36′58″N 90°33′33″W / 40.61611°N 90.55917°WCoordinates: 40°36′58″N 90°33′33″W / 40.61611°N 90.55917°W | |
| Country | United States |
| State | Illinois |
| County | McDonough |
| Elevation | 709 ft (216 m) |
| Time zone | Central (CST) (UTC-6) |
| • Summer (DST) | CDT (UTC-5) |
| Area code(s) | 309 |
| GNIS feature ID | 423283 |
Walnut Grove is an unincorporated community in McDonough County, Illinois, United States.