What area code is 904?
Here's everything about it.
Instant lookup for the 904 area code — location, time zone, cities served, and who's been calling from it. No sign-up, no app.
904 at a glance
Summary
Cities & regions served by 904
Jacksonville3 communities on record for 904.
Where 904 sits on the map
Overlay: 324Coverage area
About the 904 region
904 covers Jacksonville in Florida, including St. Augustine and Starke. The code has been in service since 1965.
As the Jacksonville region grew, 904 ran low on available numbers, so 324 was added as an overlay code over the same geographic area. Both codes are local to each other and 10-digit dialing applies throughout.
Split of 305; 1995: split to create 352; 1997: split to create 850; 2001: split to create 386; 2024: overlaid by 324.
Who called me from 904?
Community reports- Caller ID is trivially spoofed: an incoming call that displays 904 does not prove the caller is really in the 904 region or even in the United States.
- Avoid calling back unknown one-ring numbers — some premium-rate scams rely on curiosity callbacks.
- Never share verification codes, payment details, or remote access during an unsolicited call, even if the caller claims to be your bank or a government agency.
- When a 904 call pressures you to act immediately, hang up and contact the organization directly through its official number.
Be the first to add a community report for a 904 number below.
Frequently asked questions
FAQWhat area code is 904?+–
904 is a telephone area code serving Jacksonville in Florida, United States, in service since 1965.
Where is area code 904 located?+–
It covers St. Augustine and Starke in Florida.
What cities are in area code 904?+–
Major communities on record include St. Augustine and Starke. The code's territory spans the Jacksonville region of Florida.
What time zone is 904?+–
904 observes Eastern (ET), which is UTC−5 / −4 DST and follows daylight saving time.
When did area code 904 start?+–
904 entered service in 1965. Its history: split of 305; 1995: split to create 352; 1997: split to create 850; 2001: split to create 386; 2024: overlaid by 324.
Why do calls to 904 require 10-digit dialing?+–
904 shares its territory with overlay code 324. Because both codes serve the same geographic area, the phone network needs all 10 digits to route a call, and calls between the codes are still local.
Is 904 a scam area code?+–
Scam and robocall traffic can use any North American code, 904 included — caller ID is easy to spoof, so the code alone does not tell you who is really calling. Check the community reports on this page before calling back an unknown 904 number, and report anything suspicious.
Can I get a 904 phone number?+–
Yes — most mobile carriers and VoIP providers let you request a 904 number regardless of where you physically live.