Area code 337 covers southwestern Louisiana, including Lafayette, Lake Charles, and New Iberia. Formed in 1999 from a split with 318, this region is the heart of Cajun and Creole culture. Lafayette, often dubbed the “Cajun Capital of the World,” is famous for its zydeco music, spicy cuisine, and festivals like Festival International de Louisiane. The area celebrates rich French-speaking heritage and Southern hospitality.