Louisiana Area Code Directory Information

The area codes, initially known as numbering plan areas, aim at organizing the telecommunications network. The original North American Numbering Plan was devised by AT&T and Bell Laboratories and implemented in 1947 in the US and Canada. The area codes are the three digit numbers that come at the beginning of each ten digit phone number. The telephones within the same area code have the same first three digits.

As per the original plan, the State of Louisiana was assigned a single area code, area code 504. However with the increase in population and rising demand for telephone numbers, other area codes were incorporated in the Louisiana area code directory in later years. The area codes serving Louisiana are discussed below.

Area Code 504

Initially area code 504 was the only area code serving the State of Louisiana. But increased pressure lead to the split of this area code into several others. The area code 504 now serves the greater New Orleans area of Louisiana. There are 12 counties within area code 504. Some of these are Orleans, Saint Bernard, East Baton Rouge, and Saint James. Some of the 33 cities under area code 504 are Baton Rouge, Monroe, Covington, and Braithwaite. There are 450 exchanges under the area code 504.

Area Code 318

The first split of the area code 504 was done in 1957 and the area code 318 came into existence. This area code serves the central as well as northern parts of the state of Louisiana. The number of counties served by area code 318 is 36; some of them are Bossier, De Soto, Madison, Lincoln, Saint Martin, and others. Some of the 188 cities within area code 318 are Bossier City, Monroe, Clayton, Montgomery, and Winnfield. There are 559 exchanges under the area code.

Area Code 225

The area code 225 came into existence in 1998/99. The southern portion of Louisiana under area code 504 was assigned to area code 225. The area code 225 serves the entire Baton Rouge Metropolitan Area. There are 16 counties and 75 cities under area code 225. Some of the counties within the area code are Ascension, East Baton Rouge, Saint Charles, and so on. Some of the cities served by area code 225 are Baton Rouge, Ethel, Jackson, Pride, and others. The area code covers 343 exchanges.

Area Code 337

The area code 318 was split off in 1999/2000 and the area code 337 came into existence. The southwestern part of Louisiana is served by the area code 337. There are 20 counties and 100 cities served by the area code. Some of the counties are Allen, Cameron, Lafayette, Vernon, and so on. Some of the cities within area code 337 are Bell City, Creole, Elton, Lafayette, Pine Prairie, Washington, and such others. The area code 337 covers 492 exchanges.

Area Code 985

The area code 985 was created in 2001 with another split of the area code 504. The area code covers the southeastern part of the state. Some of the 17 counties within the area code are Assumption, Jefferson, Saint Charles, Washington, and so on. There are 84 cities served by this area code. Some of these cities are Belle Rose, Covington, Grand Isle, Gibson, Kentwood, Golden Meadow, and such others. There are 355 exchanges within this area code.