For AI agents: llms.txt.

Explore the 904 area code associated with Jacksonville, FL. Check its location, dialing rules and related codes, or look up a full phone number.

Where is the 904 area code?

904 is a geographic area code associated with Jacksonville, Florida, United States.

Communities associated with 904 in telephone numbering records include Orange Park, Middleburg, Starke, Yulee, and Baldwin. These are examples, not a complete list of places served or a map of municipal boundaries.

The area code tells you about a number’s assigned region. It does not locate a person or establish who is calling. For that, start with the full phone number and review any available evidence in context.

Which area codes are used alongside 904?

324 are listed with 904 in NANPA’s numbering records. These codes can serve overlapping areas; they do not necessarily have identical boundaries or identify the same city. Use the complete phone number when checking a call.

NANPA area-code database

NANPA: active telephone exchange records

NIST: daylight saving time rules

FTC: phone scams and caller ID spoofing

Frequently asked questions.