Significant events for area code 713
| Date |
Details |
| 1947 | One of the original four area codes for Texas. It covered the southeastern part of the state. |
| March 19, 1983 | Area code 713 was split with 409 covering the area surrounding the Houston metro area |
| November 2, 1996 | Area code 713 was split with 281 covering most of the Houston suburbs. |
| January 16, 1999 | Area code 832 was overlaid on 713 and 281. In addition, 281 became an overlay on 713 |
| July 1, 2014 | Area code 346 was overlaid on 713, 281 and 832 |