Area Code 904

Area Code 904 History:

07/11/1965
Area code 904 was officially put into service. Area code 904 was created from a split of area code 305. In 1995 area code 904 was split to form area code 352. In 1997 area code 904 was split to form area code 850. In 2001 area code 904 was split to form area code 386.

Area code 324 was put into service as an all services overlay of area code 904 on February 26, 2024. Ten digit dialing (area code + seven digit number) is necessary in the 324/904 overlay because different homes in the same geographic area can have the same seven digit phone number but each would have a different area code.

Counties in Florida within area code 904 include:

Baker County, Bradford County, Clay County, Duval County, Nassau County, and Saint Johns County.

Major cities or places in Florida within area code 904 include:

Area code 904 serves northeastern Florida including the Jacksonville metropolitan areas and the major cities of Jacksonville Beach, Lakeside, and St. Augustine in addition to many smaller communities within the area code 904 service area.