904 Area Code 🌍☎️

The most populous cities in area code 904 are: Jacksonville, Saint Augustine, Fernandina Beach, Jacksonville Beach, and Starke.

Other cities in the 904 area code include: Middleburg, Fleming Island, Green Cove Springs, Ponte Vedra Beach, Orange Park, Yulee, Macclenny, Callahan, Hilliard, Lawtey, Hastings, Glen Saint Mary, and Saint Johns.

Jacksonville is a seaport city and the seat of Duval County, Florida, United States. With an estimated 868,031 residents as of 2015, Jacksonville is the most populous city in both the state of Florida and the southeastern United States. It is estimated to be the 12th most populous city in the United States and is the largest city by area in the contiguous United States. The Jacksonville metropolitan area has a population of 1,603,497 and is the 34th largest in the United States and fourth largest in the state of Florida. The city is situated on the banks of the St. Johns River, in the First Coast region of North Florida, about 25 miles (40 km) south of the Georgia state line and 340 miles (550 km) north of Miami.Prior to European settlement, the Jacksonville area was inhabited by Native American people known as the Timucua. In 1564, the French established the short-lived colony of Fort Caroline at the mouth of the St. Johns River, becoming one of the earliest European settlements in the continental United States. In 1822, a year after the United States gained Florida from Spain, the town of Jacksonville was platted along the St. Johns River. Established at a narrow point in the river known as Wacca Pilatka to the Seminole and the Cow Ford to the British, the enduring name derives from the first military governor of the Florida Territory and seventh President of the United States, Andrew Jackson.Jacksonville is the cultural, commercial and financial center of North Florida. A major military and civilian deep-water port, the city's riverine location supports two United States Navy bases and the Port of Jacksonville, Florida's third largest seaport. The two US Navy bases, Blount Island Command and the nearby Naval Submarine Base Kings Bay, form the third largest military presence in the United States. Jacksonville serves as headquarters for various banking, insurance, healthcare, logistics, and other institutions. These include CSX Corporation, Fidelity National Financial, FIS, Landstar System, Ameris Bancorp, Atlantic Coast Financial, Black Knight Financial Services, EverBank, Rayonier Advanced Materials, Regency Centers, Stein Mart, Web.com, Fanatics, Gate Petroleum, Haskell Company, Interline Brands, Sally Corporation, and Southeastern Grocers. Jacksonville is also home to several colleges and universities, including University of North Florida, Jacksonville University and Florida State College at Jacksonville.

St. Augustine (Spanish : San Agustín) is a city in the Southeastern United States, on the Atlantic coast in northeastern Florida. It is the oldest continuously occupied European-established settlement within the borders of the continental United States. The county seat of St. Johns County, it is part of Florida's First Coast region and the Jacksonville metropolitan area. According to the 2010 census, the city population was 12,975. The United States Census Bureau's 2013 estimate of the city's population was 13,679, while the urban area had a population of 69,173 in 2012. Saint Augustine was founded on September 8, 1565, by Spanish admiral Pedro Menéndez de Avilés, Florida's first governor. He named the settlement "San Agustín," as his ships bearing settlers, troops, and supplies from Spain had first sighted land in Florida eleven days earlier on August 28, the feast day of St. Augustine. The city served as the capital of Spanish Florida for over 200 years, and became the capital of British East Florida when the territory briefly changed hands between Spain and Britain.Spain ceded Florida to the United States in 1819, and when the treaty was ratified in 1821, St. Augustine was designated the capital of the Florida Territory until Tallahassee was made the capital in 1824. Since the late 19th century, St. Augustine's distinct historical character has made the city a major tourist attraction, and it is also the headquarters for the Florida National Guard.

Fernandina Beach is a city in Nassau County, Florida, United States, on Amelia Island. It is the northernmost city on Florida's Atlantic coast, and is one of the principal municipalities comprising Greater Jacksonville. The area was first inhabited by the Timucuan Indian tribe. Located on Amelia Island, known as the "Isle of 8 Flags", Fernandina has had the flags of the following nations flown over it since 1562: France, Spain, Great Britain, Spain (again), the Patriots of Amelia Island, the Green Cross of Florida, Mexico, the Confederate States of America, and the United States. It is the only municipality in the United States that has flown eight different national flags. According to the 2010 census, the city population was 11,487. It is the seat of Nassau County.

The 904 area code lies within the Eastern Daylight Time Zone (or EDT). The current time in Eastern Daylight Time is 02:21 AM on Jul 20, 2025.