Area Code 904 Location

Area code 904 serves Jacksonville, Florida, and much of northeast Florida. It covers phone numbers across Duval, Nassau, Clay, St. Johns, and Baker counties, stretching from the Georgia state line down the Atlantic coast to historic St. Augustine and west toward the Osceola National Forest. This region includes major military, port, and tourism hubs along the St. Johns River and the Atlantic beaches, making 904 a key code for commerce, travel, and daily life in the First Coast.

“Jacksonville is Florida’s most populous city.” — U.S. Census Bureau

Major cities and communities in the 904 area code include:

• Jacksonville (Downtown, Southside, Westside, Northside, and the Beaches)
• St. Augustine and St. Augustine Beach
• Orange Park and Green Cove Springs
• Ponte Vedra Beach
• Fernandina Beach and Amelia Island
• Yulee, Callahan, and Hilliard
• Macclenny (Baker County)
• Atlantic Beach, Neptune Beach, and Jacksonville Beach

Established in 1965 as a split from Florida’s original 305, area code 904 once covered a larger part of North Florida before later splits created 352 (1996), 850 (1997), and 386 (2001) to meet demand. Today, 904 is tied to standout landmarks like the Castillo de San Marcos in St. Augustine, Fort Clinch State Park on Amelia Island, Naval Air Station Jacksonville, and Naval Station Mayport. Jacksonville’s river-to-sea setting, busy seaport, and NFL team highlight the area’s energy, while the historic streets of St. Augustine and wide Atlantic beaches bring steady tourism. If a call or text shows a 904 phone number, it’s almost always from northeast Florida’s First Coast.