| Area Code | 904 |
| State | Florida |
| Current Time in Area Code 904 | 904> EDT |
| Timezone | Eastern Daylight Time |
| Regional Market Area | Gainesville Area Metro Jacksonville |
| Metro Area(s) | Jacksonville, FL |
| Population (2020) | 1634151 |
| Adjacent Area Codes | 352,386,912 |
| Baker County |
| Bradford County |
| Clay County |
| Duval County |
| Nassau County |
| Saint Johns County |
| Fruit Cove |
| Jacksonville |
| Lakeside |