904 Area Code — Florida
904 is a North American Numbering Plan area code for Florida, the United States. It covers about 1,672,047 people in 25 towns and 85 ZIP codes, including Jacksonville, Saint Augustine and Orange Park.
| Field | Value |
|---|---|
| Area code | 904 |
| Country | United States (+1) |
| State / province | Florida |
| Type | Shares its towns with 324 |
| Time zone | Eastern |
| Population covered | 1,672,047 |
| Towns covered | 25 |
| ZIP codes | 85 |
| Approx. centre | 30.252, -81.661 |
Where area code 904 is used
Area code 904 is assigned to Florida, the United States, inside the North American Numbering Plan. Numbers in the code are written (904) NXX-XXXX at home and +1 904 NXX-XXXX when dialled from outside Canada and the United States. Since the NANP moved to 10-digit dialling you must always include the area code, even for a local call.
Other area codes in this footprint: 324. They serve towns in the same territory, so a single street can contain numbers from more than one code. That is normal in the NANP and does not change how you dial.
Towns and cities in area code 904
The 25 towns below are the largest in the 904 footprint, ranked by population. Every one of them links to its own page with the full list of area codes and ZIP codes for that town.
| Town | County | Population | ZIP codes |
|---|---|---|---|
| Jacksonville | Duval County | 959,769 | 48 |
| Saint Augustine | St. Johns County | 167,510 | 6 |
| Orange Park | Clay County | 85,139 | 3 |
| Saint Johns | St. Johns County | 75,016 | 1 |
| Middleburg | Clay County | 58,983 | 2 |
| Fernandina Beach | Nassau County | 41,029 | 2 |
| Green Cove Springs | Clay County | 34,562 | 1 |
| Ponte Vedra | St. Johns County | 29,784 | 1 |
| Fleming Island | Clay County | 29,766 | 2 |
| Ponte Vedra Beach | St. Johns County | 29,289 | 2 |
| Jacksonville Beach | Duval County | 29,072 | 2 |
| Yulee | Nassau County | 26,700 | 2 |
Counties covered
| County | ZIP codes |
|---|---|
| Duval County | 51 |
| St. Johns County | 12 |
| Clay County | 10 |
| Nassau County | 7 |
| Bradford County | 3 |
| Baker County | 2 |
Other area codes serving the same towns
Nearby area codes
How to dial area code 904
- Within North America: 904 + 7-digit number (904-NXX-XXXX). The leading 1 is optional on a mobile phone and required on most landlines for long-distance.
- From abroad: your country's international prefix, then 1, then 904, then the 7-digit number — for example 00 1 904 NXX-XXXX from most of Europe.
Frequently asked questions
What area code is 904?
904 is a North American Numbering Plan area code assigned to Florida, the United States. It covers about 1,672,047 people in 25 towns.
Is 904 a US or Canadian area code?
904 is a United States area code. Canada and the United States share the +1 country code, so both are part of the same numbering plan.
What time zone is area code 904 in?
Area code 904 is in the Eastern time zone.
Do I have to dial 10 digits?
Yes. Every NANP call now requires the area code plus the seven-digit number, even for a local call.