location for area code 337
Major cities or places in Louisiana within area code 337 include: Area code 337 serves southwestern Louisiana including the larger cities and communities of Crowley, De Ridder, Lafayette, Lake Charles, New Iberia, Opelousas, and Sulphur, as well as, many smaller communities in southwestern Louisiana.rea code 337 serves southwestern Louisiana including the larger cities and communities of Crowley, De Ridder, Lafayette, Lake Charles, New Iberia, Opelousas, and Sulphur, as well as, many smaller communities in southwestern Louisiana.
In the North American Numbering Plan, telephone area code 337 covers southwestern Louisiana. It was created in 1999.Until 1999/2000, this area was the southern half of area code 318, which covered the western half of Louisiana.n the North American Numbering Plan, telephone area code 337 covers southwestern Louisiana. It was created in 1999.