Geographic Regions and Area Codes

Area code 904 primarily serves the northeast region of Florida, known as the First Coast. This includes the metropolitan area of Jacksonville and surrounding counties such as Duval, St. Johns, Nassau, Baker, and most of Clay County. The region is known for its diverse economic activities and vibrant business environment. In 2024, a new overlay area code, 324, was introduced to accommodate the growing demand for phone numbers. This requires ten-digit dialing for local calls, ensuring businesses have ample phone number availability.

Key regions within Area Code 904 include:

  • Jacksonville
  • St. Augustine
  • Fernandina Beach
  • Orange Park
  • Middleburg