904 area code
Jacksonville area, Eastern Time.Area code 904 covers Jacksonville, Saint Johns, Fernandina Beach and 16 more places in Florida, on Eastern Time. 324 covers the same area.
Right now in Jacksonville
Eastern Time (EST, UTC-5; EDT, UTC-4 in summer)
Calling hours: Every day, 8 AM to 8 PM (Florida law)
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Where 904 numbers come from
Numbers are issued by rate center, a billing area named for its main town. 904 has 19. Each one's share is how many 904 numbers start there. Its biggest metro area is Jacksonville, FL.
- Jacksonville62%
- Saint Johns9%
- Fernandina Beach4%
- Orange Park4%
- Jacksonville Beach3%
- Middleburg2%
- Ponte Vedra Beach2%
Also: Starke, Green Cove Springs, Yulee, Baldwin, Callahan, Maxville, Macclenny, Hilliard, Hastings, Kingsley Lake, Lawtey, Sanderson
Share of exchanges (blocks of 10,000 numbers). Source: NANPA rate center and exchange reports, November 10, 2026
When can you call a 904 number?
Sales calls to homes and cell phones have legal hours, set by Florida law. Hold every 904 number to them, since you can't tell a work line from a personal cell.
What applies to 904Every day, 8 AM to 8 PM
- Federal (TCPA and FTC rule)Every day, 8 AM to 9 PMCalls to residential and mobile numbers. Most calls to businesses are exempt from the FTC's rule.47 CFR 64.1200(c)(1); 16 CFR 310.4(c) (opens in a new tab)
- Florida lawEvery day, 8 AM to 8 PMAlso no more than 3 calls in 24 hours on the same subject.Fla. Stat. 501.616(6) (opens in a new tab)
Local time comes from the area code, not from where the person is today. Mobiles keep their number when they move. Calling hours here are a guide, not legal advice. Every state's calling hours, with sources
904 and 324
904 went into service on July 11, 1965, and 352, 386 and 850 were later split off from it. 904 and 324 cover the same area, so new numbers can get either code and neighbors can have different area codes. 904 holds 98% of the area's exchanges; 324 holds the rest. Local calls take all 10 digits.
- 1965904 starts
- 1995352 split off
- 1997850 split off
- 2001386 split off
- 2024324 overlay
Source: NANPA area code database
Calling a list of 904 numbers?
Paste it into the free phone number validator. It checks every number, finds each one's time zone and sorts the list by who you can call right now.
904 area code FAQ
What area code is 904?
904 is a Florida area code for Jacksonville, Saint Johns, Fernandina Beach, Orange Park and 15 more places.
What time zone is the 904 area code in?
Eastern Time (EST, UTC-5; EDT, UTC-4 in summer).
Is 324 the same as 904?
Same area, different code. 904 and 324 cover the same area (an overlay), so new numbers can get any of them and local calls take all 10 digits.
What are the calling hours for 904 numbers?
Every day, 8 AM to 8 PM, local time, under Florida law.
When did the 904 area code start?
On July 11, 1965.
Calling 904 numbers? Reach more of them.
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