In the North American Numbering Plan, telephone area code 337 covers southwestern Louisiana. It was created on October 11, 1999. Before the 337 code was formed, this area was the southern half of area code 318, which had covered most of Louisiana west of the Mississippi River since 1957.
Prior to October 2021, area code 337 had telephone numbers assigned for the central office code 988. In 2020, 988 was designated nationwide as a dialing code for the National Suicide Prevention Lifeline, which created a conflict for exchanges that permit seven-digit dialing. This area code was therefore scheduled to transition to ten-digit dialing by October 24, 2021.
Abbeville, Louisiana Arnaudville, Louisiana Baldwin, Louisiana Basile, Louisiana Breaux Bridge, Louisiana Broussard, Louisiana Cade, Louisiana Cameron, Louisiana Carencro, Louisiana Carlyss, Louisiana Cecilia, Louisiana Centerville, Louisiana Charenton, Louisiana Church Point, Louisiana Crowley, Louisiana Delcambre, Louisiana DeRidder, Louisiana Duson, Louisiana Elton, Louisiana Erath, Louisiana Eunice, Louisiana Franklin, Louisiana Grand Coteau, Louisiana Gueydan, Louisiana Henderson, Louisiana Iota, Louisiana Iowa, Louisiana Jeanerette, Louisiana Jennings, Louisiana Kaplan, Louisiana Kinder, Louisiana Krotz Springs, Louisiana Lafayette, Louisiana Lake Arthur, Louisiana Lake Charles, Louisiana Leesville, Louisiana Leonville, Louisiana Loreauville, Louisiana Mamou, Louisiana Maurice, Louisiana Melville, Louisiana Mermentau, Louisiana Merryville, Louisiana Moss Bluff, Louisiana New Iberia, Louisiana Oberlin, Louisiana Opelousas, Louisiana Palmetto, Louisiana Parks, Louisiana Port Barre, Louisiana Rayne, Louisiana Scott, Louisiana St. Martinville, Louisiana Sulphur, Louisiana Sunset, Louisiana Ville Platte, Louisiana Vinton, Louisiana Washington, Louisiana Welsh, Louisiana Westlake, Louisiana Youngsville, Louisiana
See also List of Louisiana area codes
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