Round Knob, Illinois | |
|---|---|
  Round Knob  Round Knob | |
| Coordinates: 37°14′50″N 88°44′15″W / 37.24722°N 88.73750°W | |
| Country | United States |
| State | Illinois |
| County | Massac |
| Elevation | 394 ft (120 m) |
| Time zone | UTC-6 (Central (CST)) |
| • Summer (DST) | UTC-5 (CDT) |
| Area code | 618 |
| GNIS feature ID | 416986[1] |
Round Knob is an unincorporated community in Massac County, Illinois, United States. Round Knob is 6.5 miles (10.5 km) north of Metropolis.
