Significant events for area code 214
| Date |
Details |
| 1947 | One of the original four area codes for Texas. It covered the northeastern part of the state. |
| 1953 | The eastern area of 915 and a small part of 214 were combined to create 817 |
| November 11, 1990 | Area code 214 was split with 903 covering the eastern area (outside the Metroplex). |
| 1995 | Area code 214 was split with central Dallas staying with 214 and creating 972 for the rest (a "doughnut" around 214) |
| July 1, 1999 | Area codes 214 and 972 were converted to a single area, effectively overlaying each other. Area code 469 was overlaid on 214 and 972 |
| January 15, 2021 | Area code 945 was overlaid on 214. |