Significant events for area code 804
| Date |
Details |
| 1973 | Area code 703 was split with 804 covering central and southern Virginia |
| 1996 | Area code 804 was split with 757 covering the Hampton Roads area |
| 2001 | Area code 804 was split with 434 covering the central and south central areas of Virginia |
| February 1, 2024 | Area code 804 was overlaid with 686. |