Significant events for area code 618
| Date |
Details |
| 1947 | One of the four original area codes for Illinois. It covers far southern Illinois. |
| July 7, 2023 | Area code 730 was overlaid on 630 . |
Significant events for area code 618
| Date |
Details |
| 1947 | One of the four original area codes for Illinois. It covers far southern Illinois. |
| July 7, 2023 | Area code 730 was overlaid on 630 . |