904 Area Code: Jacksonville, Florida — Cities, Nearby Codes & Business Guide

The 904 area code is the telephone code for Jacksonville, Florida — the largest city by land area in the contiguous United States and the commercial anchor of the state's northeastern corner. It covers Duval County plus the surrounding First Coast counties of St. Johns, Clay, Nassau, and Baker, all on Eastern Time. The 904 prefix stretches from the St. Johns riverfront out to the Atlantic beaches, and locals treat it as shorthand for the whole First Coast region.

This guide lays out the essentials: where the code sits, the districts that define it, how the 324 overlay changed dialing, which codes border it, the banking-and-port economy behind it, and the exact steps for activating a Jacksonville number from anywhere.

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The 904 prefix serves Jacksonville and the surrounding counties of northeast Florida. Florida's numbering history took two steps to arrive at 904: in 1953, the state's original single code, 305, was first divided when the southwest — including Tampa — split off as 813. In 1965, the remaining 305 territory split again, and the northern half, including Jacksonville, became 904. Its own territory has since been trimmed three times as the state grew: 407 split off the Orlando and east-coast corridor in 1988, 352 took north-central Florida (Ocala and Gainesville) in 1995, and 386 carved out the Daytona Beach area in July 2001 — leaving 904 focused on the Jacksonville metro and the First Coast.

• Dialing format: (904) 555-0123
• International format: +1 904-555-0123
• Time zone: Eastern Time (ET) — UTC−5 Standard, UTC−4 Daylight Saving
• Year introduced: 1965, in a split of northern Florida's numbering territory
• Mandatory ten-digit dialing began January 29, 2024, ahead of the 324 overlay's launch the following month

Jacksonville's consolidated city-county government — formed in 1968 when the city merged with Duval County — gives the prefix a rare tidiness: one city, one county, one code, covering roughly 874 square miles, making Jacksonville the largest city by land area in the contiguous United States. That alignment makes the three digits unusually legible to locals — a caller with the regional prefix reads as First Coast before the conversation begins, whether the line belongs to a riverfront law firm or a surf shop at the beaches. The consolidated city is now home to just over one million residents — as of 2024, Jacksonville passed Miami to become Florida's most populous city.

The code covers Jacksonville's consolidated city-county and its neighbors along the St. Johns River and the Atlantic coast, reaching from the urban core through historic streetcar suburbs to the barrier-island beach towns and the communities of St. Johns, Clay, and Nassau counties around them. Four districts show its range, from urban riverfront to beachfront.

Downtown

Jacksonville's riverfront core lines both banks of the St. Johns, with office towers, the sports complex, and a growing residential skyline. It is the region's business address, and companies here treat a local number as part of their riverfront identity.

Riverside

Just upriver from downtown, Riverside is the city's historic district — leafy avenues, early twentieth-century architecture, and the independent shops and cafes of Five Points. Its neighborhood businesses run on local reputation and a familiar local prefix.

San Marco

Across the river on the Southbank, San Marco pairs a landmark open-air square with boutiques, restaurants, and professional offices. It is one of Jacksonville's most walkable districts and a favorite location for small firms serving city clients.

Jacksonville Beach

East of the city, Jacksonville Beach anchors the coastal communities where the metro meets the Atlantic. Surf shops, hospitality businesses, and seasonal services share the same prefix as downtown, tying the beaches into one regional identity.

Ponte Vedra Beach

South of Jacksonville Beach, Ponte Vedra Beach is the First Coast's best-known address in golf — home to the PGA Tour's national headquarters and TPC Sawgrass, the course that hosts The Players Championship every March. The area's concentration of sports, hospitality, and professional-services businesses leans heavily on a recognizable 904 line.

Counties and Communities the 904 Code Serves

Beyond Jacksonville's consolidated city-county, the prefix reaches across the wider First Coast. Anyone checking whether a local number will land in the right market can use the list below as a quick reference for the counties and communities the code covers.

• Duval County — Jacksonville, Jacksonville Beach, Atlantic Beach, and Neptune Beach
• St. Johns County — St. Augustine, St. Augustine Beach, and Ponte Vedra Beach
• Clay and Nassau counties — Orange Park, Fleming Island, Fernandina Beach, and Yulee
• Baker County — Macclenny — all now sharing the 324 overlay on the identical footprint

After decades as a single-code region, Jacksonville received its first overlay on February 26, 2024, when the 324 code was layered across the exact same First Coast footprint (permissive dialing had already begun the previous August). No existing number changed — households and businesses kept their familiar 904 digits — but new lines can now draw from either prefix, and every local call is dialed with the full ten digits.

Neighboring regions tell the story of Florida's growth: directly south, the Daytona corridor answers under the 386 area code, which was itself carved out of Jacksonville's former territory.

• 904 — the original Jacksonville and First Coast prefix, still the most recognized in the region
• 324 — added February 26, 2024 as an overlay sharing the identical footprint, increasingly common on newer lines
• 386 — the Daytona Beach region, split from 904 in July 2001
• 352 — north-central Florida, including Gainesville and Ocala, split from 904 in 1995

The overlay arrived because the region's appetite for new numbers finally outgrew what a single code could supply — the same growth story playing out in metros across the country. For businesses, the practical takeaway is simple: the original 904 prefix remains the strongest local signal on the First Coast, while ten-digit dialing is now standard for every local call.

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Jacksonville observes Eastern Time (ET) — UTC−5 during Standard Time and UTC−4 during Daylight Saving Time, which runs from mid-March to early November. The city keeps the same clock as New York, Atlanta, and Miami, unlike Florida's western Panhandle, which sits on Central Time.

For businesses, an Eastern Time number means clean alignment with the majority of American customers and financial markets. A Jacksonville line opens with Wall Street, overlaps the Midwest through midday, and still catches the West Coast through the afternoon.

Florida's split clock is a genuine trap for out-of-state callers — the same state holds two time zones, and assuming Central time for a Jacksonville contact means calling an hour late all day. Teams dialing into the First Coast should anchor their calling windows to the Eastern schedule, favoring mid-morning and mid-afternoon slots when residents and office staff are most reachable.

Jacksonville's economy runs on three engines — finance, trade, and the military — each shaped by the city's river-and-ocean geography, plus a fourth: Ponte Vedra Beach's golf and hospitality industry anchored by the PGA Tour. Together they make a local number a meaningful business asset.

Banking & Fintech

Jacksonville is a major financial back-office center, hosting operations hubs for banks, payment processors, and fintech firms that keep national institutions running. The sector links the city into the Southeast's wider financial corridor — the same one anchored by Atlanta and its 404 area code — and it sustains a deep pool of finance and technology talent.

Port & Logistics

The city's deep-water port is an Atlantic trade gateway, handling vehicles, containers, and bulk cargo along the St. Johns River. Around it has grown a logistics economy of distribution centers, trucking firms, and rail connections serving the Southeast.

Military

Large naval installations shape the regional economy, supporting shipyards, defense contractors, and the thousands of families connected to the bases. The military presence steadies the local market and feeds skilled veterans into the civilian workforce.

Many regional operators also compare notes with peers in the 954 area code, where Fort Lauderdale businesses face similar routing choices.

A Jacksonville number can be live before lunch. Cloud phone providers offer local inventory that activates online — no Florida office, hardware, or wiring required.

1. 1Choose a provider — pick a cloud phone service that stocks Jacksonville numbers and includes the features the business needs, such as call routing, recording, and CRM integration.
2. 2Pick a number — browse available 904 combinations and select a memorable one; it will appear to callers as (904) 555-0123, or +1 904-555-0123 in international format.
3. 3Activate and route — complete a short verification and switch the number on. Calls ring on any device — mobile, desktop app, or desk phone — wherever the team works.

After activation the line behaves like any long-established local number: add team extensions, set Eastern Time business hours, and keep the same digits permanently as the company grows.

Reaching a First Coast line from outside the United States follows the standard international pattern: the caller dials their country's exit code, then the North American country code 1, then the ten-digit number. From most of Europe that looks like 00 1 904 555 0123; from mobile phones worldwide, entering the number as +1 904-555-0123 works everywhere, because the plus sign stands in for whatever exit code the local network uses.

• Store international contacts in +1 format so the same entry dials correctly from any country.
• Remember the Eastern Time clock when calling — a morning call from Western Europe lands before Jacksonville offices open.
• Businesses expecting overseas callers should publish the full +1 format on their website and email signatures, not just the local (904) style.

For companies serving the port's international trade partners, listing the number in both formats removes a small but real point of friction for shippers, brokers, and suppliers calling from abroad. For more, see economy.

A Jacksonville business does not have to pick a single identity. A local number signals First Coast roots — the right choice for restaurants, law firms, contractors, and any company whose customers live between the riverfront and the beaches. A toll-free number, by contrast, signals national reach and gives out-of-state callers a familiar, no-cost way to make contact.

The two work well together. Many companies publish a local line for the metro market and a toll-free line for national campaigns, routing both to the same phones and the same team. The local number carries neighborhood trust in local search results and community advertising, while the toll-free number anchors packaging, national ads, and support pages. Cloud platforms make the pairing easy to manage, since both numbers live in one dashboard with shared routing rules, voicemail, and reporting.

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