Duncan, Illinois | |
|---|---|
  Duncan, Illinois  Duncan, Illinois | |
| Coordinates: 40°59′01″N 89°47′21″W / 40.98361°N 89.78917°W | |
| Country | United States |
| State | Illinois |
| County | Stark |
| Elevation | 659 ft (201 m) |
| Time zone | UTC-6 (Central (CST)) |
| • Summer (DST) | UTC-5 (CDT) |
| Area code | 309 |
| GNIS feature ID | 407481[1] |
Duncan is an unincorporated community in Stark County, Illinois, United States, located 4 miles (6.4 km) north-northwest of Princeville.