what area code is 337

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Area code 337 is located in southwestern Louisiana and covers cities including Lafayette, Lake Charles, Leesville, New Iberia, Opelousas, and most of southwestern Louisiana. It is the only area code that serves the area. 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.