Florida · Eastern Time
324 Area Code
Area code 324 is in Florida, serving Jacksonville and northeast Florida, including St. Augustine and Fernandina Beach. It is in the Eastern Time zone. It shares its territory with overlay code 904, so 10-digit dialing is required.
Last updated October 1, 2026 · Source: NANPA
Where is the 324 area code?
324 is a Florida area code covering Jacksonville and northeast Florida, including St. Augustine and Fernandina Beach. In the wider directory it sits in the South region.
Cities in the 324 area code
- Jacksonville
- St. Augustine
- Orange Park
- Fleming Island
- Ponte Vedra Beach
- Jacksonville Beach
- Fernandina Beach
- Atlantic Beach
- Neptune Beach
- Middleburg
- Green Cove Springs
- Yulee
- Macclenny
- Callahan
Counties served by 324
Duval County, St. Johns County, Clay County, Nassau County and Baker County.
Time zone note: Most of Florida is Eastern; the western Panhandle (around Pensacola) is Central.
324 overlay codes and dialing
The 324 territory is covered by an overlay of 2 area codes: 324, 904. All of them serve the same geographic area, and the original code is 904. Because more than one code covers the same ground, 10-digit dialing is mandatory — you must dial the area code for every local call. New phone lines may be assigned any of these codes.
History of the 324 area code
324 went into service on February 26, 2024 as an overlay of 904, relieving number exhaustion in the Jacksonville area. Rather than splitting the region, the overlay lets existing customers keep their numbers while new lines draw from the added code. Learn more in our overlay guide.
Is 324 a scam or spam risk?
324 is a legitimate geographic area code, not a premium or toll line, so a call from it costs you nothing extra. That said, scammers frequently spoof real local area codes to look familiar on caller ID. A genuine 324 number on your screen is no guarantee the caller is in Jacksonville, FL or trustworthy. See spam & scam-risk area codes for how spoofing works and how to respond.
Other Florida area codes
Explore more
See every code in Florida, compare codes across the South region, or view all Eastern Time codes. You can also browse the 3XX block or the complete numeric list of US area codes.
New to how this all works? Start with how area codes work, then read up on overlays, 10-digit dialing, and spam & scam-risk codes. To check another number, use the area code lookup tool.
Quick answers
324 area code FAQ
Where is the 324 area code?
The 324 area code is in Florida, covering Jacksonville and northeast Florida, including St. Augustine and Fernandina Beach, in the South region.
What cities are in the 324 area code?
Cities in the 324 area code include Jacksonville, St. Augustine, Orange Park, Fleming Island, Ponte Vedra Beach, Jacksonville Beach, Fernandina Beach, Atlantic Beach, Neptune Beach and Middleburg.
What time zone is 324 in?
324 is in the Eastern Time zone. Most of Florida is Eastern; the western Panhandle (around Pensacola) is Central.
What is the overlay for the 324 area code?
324 shares its territory with 904. Both codes (324, 904) serve the same area, so 10-digit dialing is required for every call.
When did the 324 area code start?
324 went into service on February 26, 2024 as an overlay of 904.
Do I have to dial 10 digits for 324?
Yes. Because 324 is an overlay area, you must dial the full 10-digit number (area code + 7 digits) for every call.
Is 324 a toll-free or premium code?
No. 324 is a standard geographic area code, so calling it costs the same as any local or long-distance call on your plan. Toll-free calls use 800, 888, 877, 866, 855, 844 or 833.