Round Knob, Illinois
| Round Knob, Illinois | |
|---|---|
| Unincorporated community | |
  Round Knob, Illinois | |
| Coordinates: 37°14′50″N 88°44′15″W / 37.24722°N 88.73750°WCoordinates: 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 | Central (CST) (UTC-6) |
| • Summer (DST) | CDT (UTC-5) |
| Area code(s) | 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.
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