Area Codes in Gilman
| Area Code▲ | City↕ | Administrative Region↕ | City Population↕ | Country/Region | Timezone |
|---|---|---|---|---|---|
| 815 | — | Illinois | 12,772,888 | United States | America/Chicago |
Nearby Cities
| City | Region | Country | Population | Area Codes | Zip Codes |
|---|---|---|---|---|---|
| Ashkum, Illinois | Illinois | United States | 761 | 815 | — |
| Crescent City, Illinois | Illinois | United States | 615 | 815 | 60928 |
| Danforth, Illinois | Illinois | United States | 604 | 815 | — |
| Onarga, Illinois | Illinois | United States | 1,368 | 815, 217 | — |
| Thawville, Illinois | Illinois | United States | 241 | 217, 815 | 60968 |