| General Information about Area Code 904 | |
|---|---|
| Country | United States |
| State / Province / Territory | Florida |
| Major City | Jacksonville |
| Time Zone | Eastern (UTC-05:00) |
| Prefix | Primary City | County | Phone Type |
|---|---|---|---|
| 904-778 | Jacksonville | Duval | Landline |
| 904-375 | Jacksonville | Duval | Landline |
| 904-615 | Saint Augustine | Saint Johns | Landline |
| 904-342 | Jacksonville | Duval | Landline |
| 904-337 | Jacksonville | Duval | Wireless |
| 904-908 | Jacksonville | Duval | Landline |
| 904-322 | Jacksonville | Duval | Wireless |
| 904-791 | Jacksonville | Duval | Landline |
| 904-923 | Jacksonville | Duval | Wireless |
| 904-500 | Jacksonville | Duval | Landline |
| 904-330 | Jacksonville | Duval | Wireless |
| 904-855 | Jacksonville | Duval | Landline |
| 904-688 | Orange Park | Clay | Landline |
| 904-790 | Jacksonville | Duval | Landline |
| 904-517 | Jacksonville | Duval | Wireless |
| 904-443 | Jacksonville | Duval | Landline |
| 904-345 | Jacksonville | Duval | Landline |
| 904-531 | Green Cove Springs | Clay | Landline |
| 904-845 | Hilliard | Nassau | Landline |
| 904-580 | Jacksonville | Duval | Wireless |