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All Area Codes/Louisiana
337

Lafayette, Louisiana

Area code 337

Where Is Area Code 337?

Area code 337 is in southwestern Louisiana. It serves the Acadiana region, including Lafayette and many nearby cities and towns across the south-central and southwestern part of the state. Lafayette is the largest city commonly linked with the code.

Area code 337 covers communities such as Lafayette, Lake Charles, New Iberia, Opelousas, Crowley, Abbeville, and Eunice. It serves parishes in this part of Louisiana, not counties, because Louisiana uses parishes as its local government divisions. Major parishes in the region include Lafayette Parish, Calcasieu Parish, St. Landry Parish, Iberia Parish, and Vermilion Parish.

Area code 337 also covers well-known parts of Cajun Country. The region includes the Atchafalaya Basin, parts of the Gulf Coast plain, and cities near Vermilion Bay and the Calcasieu River. Lafayette sits near the heart of Acadiana, a region known for Cajun and Creole culture.

History of Area Code 337

Area code 337 was created in 1999 as a split from area code 318. The split took effect on October 19, 1999, when southern and southwestern parts of the old 318 territory moved to the new code. This change reflected steady telephone growth in Lafayette, Lake Charles, and the surrounding region.

Area code 337 remains a standalone geographic area code. Public records from the North American Numbering Plan Administrator list 337 as a Louisiana area code, and it has not been overlaid by another area code. The code was added as demand for new phone numbers increased across Acadiana and nearby parts of southwest Louisiana.

Key Facts About Area Code 337

  • Area code 337 is a Louisiana geographic area code, and Lafayette is the major city most often associated with it.
  • Area code 337 serves southwestern and south-central Louisiana, including much of the Acadiana region.
  • Area code 337 was created from area code 318, and the split took effect on October 19, 1999.
  • Area code 337 is in the Central Time Zone, which includes Central Standard Time and Central Daylight Time when observed.
  • Area code 337 covers major cities such as Lafayette, Lake Charles, New Iberia, Opelousas, Crowley, and Abbeville.
  • Area code 337 serves a region that includes the University of Louisiana at Lafayette, one of the state's major public universities.
  • Area code 337 covers parts of Cajun Country, a region widely known for Cajun music, food, and French-influenced cultural traditions.
  • Area code 337 is not a toll-free code. It is a standard local area code used for landlines and mobile numbers in Louisiana.

Frequently Asked Questions

What state is area code 337 in?

Area code 337 is in Louisiana.

What major cities use area code 337?

Major cities in area code 337 include Lafayette, Lake Charles, New Iberia, Opelousas, Crowley, Abbeville, and Eunice.

Is area code 337 a toll-free number?

No. Area code 337 is a geographic area code for southwestern and south-central Louisiana.

Last updated: March 2026

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