what area code is 318

The 318 area code is located in northern and central parts of the U.S. state of Louisiana. It covers cities such as Shreveport, Bossier City, and Monroe. The area code was assigned in 1957 in an area code split of area code 504, to a numbering plan area that comprised nearly all of the state west of the Mississippi River, stretching from the Gulf of Mexico north to the border with Arkansas.