Area code 904
Encyclopedia
First Coast
The First Coast is a region of Florida, in the United States. It extends along the Atlantic, or eastern, coast of the state, from the Georgia border, past the southern end of Anastasia Island, to Marineland....
region of the U.S. state
U.S. state
A U.S. state is any one of the 50 federated states of the United States of America that share sovereignty with the federal government. Because of this shared sovereignty, an American is a citizen both of the federal entity and of his or her state of domicile. Four states use the official title of...
of Florida
Florida
Florida is a state in the southeastern United States, located on the nation's Atlantic and Gulf coasts. It is bordered to the west by the Gulf of Mexico, to the north by Alabama and Georgia and to the east by the Atlantic Ocean. With a population of 18,801,310 as measured by the 2010 census, it...
, including all of the metropolitan area of Jacksonville
Jacksonville, Florida
Jacksonville is the largest city in the U.S. state of Florida in terms of both population and land area, and the largest city by area in the contiguous United States. It is the county seat of Duval County, with which the city government consolidated in 1968...
. At its largest, it covered the entire northern half of Florida. It was split from area code 305
Area code 305
Area code 305 was the single original area code for the entire state of Florida. Today, it serves all of Miami-Dade County , and the part of Monroe County that is in the Florida Keys...
on Sunday, July 11, 1965, as a "flash-cut" with no formal permissive dialing
Permissive dialing
In North America, permissive dialing is the ability to make phone calls in an area subject to a newly introduced area code using both the new and preexisting dialing methods....
period. It currently includes all of Duval
Duval County, Florida
Duval County is a county located in the U.S. state of Florida. As of 2010, the population was 864,263. Its county seat is Jacksonville, with which the Duval County government has been consolidated since 1968...
, St. Johns
St. Johns County, Florida
St. Johns County is a county located in northeastern Florida. As of the 2010 census, the population was 190,039. The county seat is St. Augustine. Due to the inclusion of Ponte Vedra Beach, it is one of the highest-income counties in the United States....
, Nassau
Nassau County, Florida
Nassau County is a county located in the state of Florida. As of 2000, the population was 57,663. The U.S. Census Bureau 2008 estimate for the county was 69,835. Its county seat is Fernandina Beach, Florida....
, Baker
Baker County, Florida
Baker County is a county located in the U.S. state of Florida. As of 2000, the population was 22,259. The U.S. Census Bureau 2008 estimate for the county is 26,164 . Its county seat is Macclenny, Florida. While primarily rural, the county is included in the Jacksonville Metropolitan Area.-...
and Clay
Clay County, Florida
Clay County is a county located in the U.S. state of Florida. As of 2010, the population was 190,895. Its county seat is Green Cove Springs, Florida. Clay County is part of the Greater Jacksonville Metropolitan area.- History :...
counties.
Area code splits in the 1990s resulted in schisms across much of north Florida (into area code 850
Area code 850
Area code 850 is in use for the Florida Panhandle, USA. Area code 904 was used for the entire part of northern Florida from 11 July 1965, when 904 split from 305, until 904 itself was split in the mid-1990s...
, 352
Area code 352
Area code 352 is a telephone dialing area around Gainesville, Florida. It split from area code 904 in 1996.It includes all of Dixie, Gilchrist, Levy, Marion, Citrus, Sumter, Lake , and Hernando counties, and all but the extreme north of Alachua County...
, and 386
Area code 386
386 is an area code in northern Florida. It is one of the few area codes in North America which is not contiguous. Area code 904 lies in between the two portions of 386. The largest city in 386 is Deltona.-Description:...
). Many new metropolitan areas in north Florida necessitated these new area codes. There was also a lack of unique phone numbers due to a plethora of new phone lines, especially in the expanding Jacksonville metro area.