Area code 904 is in Florida (FL), USA. It covers Jacksonville, Fleming Island, Jacksonville Beach and more. Area code 904 has been put into service since July 11, 1965.
Florida Counties within 904 Area Code
Counties within area code 904 includes Baker, Bradford, Clay, Duval, Nassau, and Saint Johns.
Florida Major Cities within 904 Area Code
Jacksonville Beach, Lakeside, and St. Augustine
What time Zone is 904 Area Code?
Area Code 904 is in the Eastern Time Zone.
Eastern Standard Time (EST) is 4 hours behind Greenwich Mean Time (GMT).