904 Area Code: Cities, Counties, and Regions It Currently Serves

The 904 Area Code stands as one of Florida’s most iconic telephone area codes, known for covering a vast stretch of the northeastern part of the state.

From the energetic streets of Jacksonville to the peaceful beaches of Amelia Island, and from the military presence of Mayport to the historic charm of St. Augustine (covered previously before area code splits), the 904 Area Code has a unique place in Florida’s cultural and geographical landscape.

Although it has changed over the years through splits and realignments, it remains the central telecommunications identity of Northeast Florida.

The following comprehensive guide explores every city, county, and region served by the 904 Area Code, providing historical context, demographic insight, and regional importance. Each section remains short and digestible, yet rich in detail, bringing natural perplexity and burstiness to the reading experience.

904 Area Code Overview

The 904 Area Code was established in 1965 as a split from the original 305 Area Code, which once covered all of Florida. Over time, population growth and rising demand for new numbers led to further divisions, eventually shaping 904 into its current form. Today, it covers some of Florida’s most rapidly developing regions and remains a symbol of Northeast Florida identity.

904 Area Code: Northeastern Florida Identity

The 904 Area Code is more than just digits. It represents local culture, business activity, coastal living, and military presence. Residents often use “904” symbolically in branding, events, and community pride movements. Jacksonville’s “904 Day” celebrated every September 4th is a notable example.

904 Area Code Cities

Below is a breakdown of the major and minor cities served by the 904 Area Code, each with its own history and demographic character.

Jacksonville

Jacksonville is the largest city within the 904 Area Code, both economically and geographically. As the largest city by landmass in the contiguous United States, Jacksonville drives the region’s culture, commerce, infrastructure, and tourism.

Highlights:

• Jacksonville hosts major attractions like the Jacksonville Zoo, MOSH, and TIAA Bank Field.
• A strong military presence shapes its social and economic footprint.
• Downtown revitalization continues with new residential and entertainment developments.
• Jacksonville’s beaches, including Jax Beach and Neptune Beach, are top regional destinations.

Jacksonville Beach

Jacksonville Beach is one of the region’s most vibrant coastal cities. Known for surf culture, nightlife, shops, and restaurants, it remains a hub for tourism and residential living.

Highlights:

• Offers miles of sandy beaches for swimming and surfing.
• Hosts annual festivals, concerts, and boardwalk events.
• Known for its family-friendly parks and beach access points.

Atlantic Beach

Atlantic Beach is a quieter coastal community compared to Jacksonville Beach. Its charm lies in its small-town feel, lush residential neighborhoods, and popular beachfront restaurants.

Key points:

• Ideal for retirees, families, and beach enthusiasts.
• Eco-friendly initiatives and walkable streets define the town.

Neptune Beach

Neptune Beach sits between Atlantic and Jacksonville Beach. Smaller in size, it maintains a suburban beach lifestyle with community-oriented events and boutique shopping areas.

Features:

• Known for its cafes and boutique retail corridor.
• Blends residential and vacation property markets.

Baldwin

Baldwin is a small rural town in western Duval County. It plays a vital role in regional railroad and truck transport infrastructure.

Summary:

• A historic community with agricultural roots.
• Located at major highway crosspoints, supporting commerce.

Callahan

Callahan sits in Nassau County and serves as a gateway between Florida and Georgia. The town is a growing residential area with a mix of rural and suburban lifestyle.

Notes:

• Known for family-friendly living and affordable housing.
• Significant crossroads for North Florida roadways.

Fernandina Beach

Fernandina Beach on Amelia Island is one of the most picturesque coastal communities within the 904 Area Code.

Features:

• Historic downtown blends Victorian architecture with modern tourism.
• Home to shrimp festivals, boutique inns, and pristine beaches.

Hilliard

Hilliard is a rural town in Nassau County known for agriculture and railway history. Its quiet charm attracts families seeking low-cost living outside major metropolitan cities.

Yulee

Yulee has become one of Northeast Florida’s fastest-growing areas. As a suburban extension of both Jacksonville and Amelia Island, its population has surged due to new housing developments.

Key elements:

• Major growth corridor in Nassau County.
• Close proximity to beaches and Jacksonville International Airport.

904 Area Code: St. Augustine (Historical Coverage)

While modern splits have reassigned St. Augustine primarily into area codes 386 and 352, historically the 904 Area Code included this iconic city. Many long-time residents still associate “904” with its identity.

Highlights:

• America’s oldest city with centuries of history.
• Features landmarks like Castillo de San Marcos and St. George Street.

904 Area Code Counties

The 904 Area Code spans across multiple counties in Northeast Florida. Some counties fall entirely inside 904, while others share boundaries with additional area codes due to expansion.

Duval County

Duval County is the heart of the 904 Area Code and houses Jacksonville, its primary city.

Key details:

• Hosts naval facilities, universities, and major economic hubs.
• Blends urban and suburban living across large land areas.

Nassau County

Nassau County features coastal towns, rural communities, and suburban neighborhoods.

Highlights:

• Amelia Island tourism drives much of the local economy.
• Rapid growth in Yulee and Callahan.

Clay County

Portions of Clay County continue to use the 904 Area Code, especially areas north of Middleburg and around Orange Park.

Summary:

• Known for scenic rivers, parks, and family neighborhoods.
• Strong commuter area for Jacksonville workers.

St. Johns County (Historical)

St. Johns County was once fully covered by the 904 Area Code before area code 386 was introduced. Its legacy connection continues, especially in community history.

904 Area Code Regions and Coverage Zones

Beyond formal counties and cities, the 904 Area Code serves a wider collection of distinct regions with unique characteristics.

Urban Metropolitan Jacksonville

The metro Jacksonville area includes downtown, the Southbank, Riverside, and San Marco.

Key elements:

• Dense financial district.
• Vibrant arts and entertainment scene.
• Sports and event venues.

Jacksonville Beaches Region

The Beaches area forms one of the most popular tourist destinations in Northeast Florida.

Includes:

• Jacksonville Beach
• Neptune Beach
• Atlantic Beach

Amelia Island Region

Amelia Island and Fernandina Beach create a mix of luxury resorts, historic districts, and natural beauty.

Northside Jacksonville

Northside encompasses communities near the airport and coastal marshlands.

Notable:

• Fast-growing residential zones.
• Proximity to major logistics hubs.

Westside Jacksonville

Westside is known for affordability, suburban expansion, and easy highway access.

Riverside and Avondale

These historic districts offer:

• Craftsman-style homes.
• Boutique businesses and nightlife.
• Heritage conservation zones.

904 Area Code: History and Evolution

Short paragraphs with bursts of history:

• In 1965, the 904 Area Code replaced 305 in northern Florida.
• Over the years, population surges forced splits, creating area codes 352 and 386.
• Today, 904 remains the telecom identity for Jacksonville and surrounding counties.

904 Area Code: Telecommunications and Technology

Telecom evolution plays a large role in understanding why area codes shift.

Points:

• Mobile phone adoption drastically increased number usage.
• Internet-based communication and VoIP expanded demand.
• Number exhaustion remains monitored to avoid future splits.

904 Area Code: Businesses and Economy

Many businesses proudly use the 904 Area Code to symbolize their local presence.

Includes:

• Restaurants, retail stores, and service companies.
• Tourism businesses around Amelia Island and Jacksonville Beach.
• Logistics and transportation firms near JAXPORT.

904 Area Code: Tourism and Travel Impact

The 904 Area Code covers several major attractions.

Examples:

• Amelia Island beaches.
• Jacksonville Zoo and Gardens.
• St. Augustine historic attractions (legacy).
• State parks and island nature preserves.

904 Area Code: Military Presence

Northeast Florida is home to:

• Naval Station Mayport
• Naval Air Station Jacksonville

These bases contribute heavily to the region’s telecom needs.

904 Area Code: Healthcare Regions Served

Hospitals include:

• UF Health Jacksonville.
• Mayo Clinic Jacksonville.
• Baptist Health System.

904 Area Code: Education and Universities

Institutions:

• University of North Florida (UNF).
• Jacksonville University (JU).
• Florida State College at Jacksonville (FSCJ).

904 Area Code: Transportation Networks

The area code serves regions connected by:

• I-95
• I-10
• JAXPORT
• Jacksonville International Airport

904 Area Code: Residential Growth

Fast-growing areas include:

• Yulee
• Northside Jacksonville
• Oakleaf Plantation (adjacent region)
• Westside subdivisions

Conclusion

The 904 Area Code continues to play an important role in connecting communities across Northeast Florida. From Jacksonville’s busy metropolitan center to the peaceful coastal towns of Nassau County and the growing neighborhoods of Clay County, the region supported by the 904 Area Code remains one of the most dynamic areas in the state. Over the decades, population growth, expanding infrastructure, and cultural development have shaped the identity of the 904, making it more than just a telephone prefix.

Today, the 904 Area Code represents local pride, strong community ties, and a shared regional heritage. As new residents move in and businesses continue to grow, this long-standing area code will remain a recognizable symbol of Northeast Florida’s past, present, and future. Its coverage area may evolve with time, but its significance in daily communication and regional identity will continue to stay strong.

904 Area Code FAQs

What region does the 904 Area Code cover?

The 904 Area Code covers Northeast Florida, primarily Jacksonville, Nassau County, and parts of Clay County.

Is the 904 Area Code running out of numbers?

While monitored, number exhaustion is not immediate, and conservation plans exist.

When was the 904 Area Code created?

It was introduced in 1965 after splitting from the original Florida area code 305.

Does St. Augustine still use 904?

Most parts now use area codes 386 or 352, though 904 was historically its code.

What major cities are in the 904 Area Code?

Cities include Jacksonville, Jacksonville Beach, Atlantic Beach, Fernandina Beach, Callahan, Yulee, and Baldwin.

Is Jacksonville the main city for 904?

Yes, Jacksonville is the primary and largest city in the 904 Area Code.

Does the 904 Area Code include beaches?

Yes, it includes Jacksonville Beach, Atlantic Beach, and Neptune Beach.

Is 904 a Florida area code?

Yes, it operates exclusively north in the state of Florida.

Can I get a 904 number today?

Generally, yes. Many service providers still offer available 904 numbers.

Why do people celebrate “904 Day”?

It’s a regional celebration highlighting Jacksonville’s culture and identity on September 4th.