Significant events for area code 205
| Date |
Details |
| 1947 | Original area code for all of Alabama. |
| January 15, 1995 | Area code 205 was split, with 334 covering the southern half of Alabama except the far west central area. |
| March 23, 1998 | Area code 205 was split, with 256 covering the far northern and northeastern part of Alabama. |
| October, 2019 | Area code 205 was overlaid by 659 |