Significant events for area code 780
| Date |
Details |
| January 25, 1999 | Area code 403 was split with 780 covering the northern and central areas of Alberta |
| September 20, 2008 | Area code 587 was overlaid on 403 and 780. |
| April 9, 2016 | Area code 825 was overlaid on the entire province. |
| January 21, 2022 | Area code 368 was overlaid on the entire province. |