If a call from the 904 area code just showed up on your phone, you're hearing from Jacksonville — the largest city by land area in the continental United States, and the anchor of Florida's First Coast. Locals have worn "904ever" as a point of pride for decades, and the area code recently gained a numbering partner for the first time in its long history.
This guide covers everything worth knowing about the 904 area code: where it's located, which cities and counties it covers, what time zone it runs on, the brand-new overlay changing how residents dial, the scam patterns to watch for, and how to get a local 904 number if you're opening a business or expanding into Jacksonville.
The 904 area code covers Duval, St. Johns, Nassau, and Baker counties, along with almost all of Clay County, in Florida's northeast corner. It's one of the most business-dense area codes on the Atlantic side of the state, home to a growing mix of logistics, finance, healthcare, and military employers.
Major cities and communities in the 904 area code include:
Geographically, the 904 numbering plan area covers Florida's entire First Coast region, a corridor anchored by the Port of Jacksonville and one of the largest naval installations on the East Coast.
The 904 area code went into service in 1965, splitting off from Florida's original 305 area code, which at the time covered the entire state. At launch, 904 covered a massive stretch of north and central Florida, well beyond just the Jacksonville area.
Because 904 and 324 now share the same territory, every call in the region — even between two neighbors calling each other in the same Jacksonville zip code — requires the full area code plus the seven-digit number. Mandatory 10-digit dialing took effect January 29, 2024, about a month ahead of the first 324 numbers going into service.
The entire 904 area code sits in the Eastern Time Zone, observing:
That means a 904 number keeps the same business hours as New York, Atlanta, and most of the East Coast — helpful to keep in mind when coordinating with West Coast teams or customers.
Area code 904 itself is completely legitimate — it's simply the dialing code for a large, real part of Florida's First Coast. But like most active area codes, it's frequently spoofed by scammers who fake a local caller ID so residents are more likely to answer a call that looks like it's coming from their own neighborhood.
Common scams reported against 904 numbers include:
If you receive a suspicious call from a 904 number, don't share personal or financial information, hang up on any recorded message demanding immediate payment, and report the call to the Federal Trade Commission. The area code isn't the problem — caller ID spoofing simply makes it easy for bad actors to borrow it.
If you want a 904 number for personal or business use, the fastest option today is a cloud business phone platform. With a provider like Softtop, getting a 904 number takes just a few steps:
Because Softtop provisions numbers instantly and supports number porting with zero port-out fees, you can also move an existing 904 number onto the platform in five to ten business days if you're switching providers rather than starting fresh.
On Softtop, every 904 number is backed by the same tools used across the platform: an AI Receptionist that answers every call in under a second, full call recording and transcription, CRM sync with HubSpot and Salesforce, and 99.999% uptime backed by an SLA.
The 904 area code has anchored Jacksonville and Florida's First Coast since 1965, surviving four rounds of splits before finally gaining a numbering partner in 324 rather than losing more territory. It runs on Eastern Time, stretches from the Georgia border to the edge of St. Augustine, and remains as central to local identity as "904ever" bumper stickers make it out to be.