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Area Code Overview
Area code 337 is a geographic telephone area code in Louisiana that went into service on October 11, 1999. The geographic regions covered by this area code overlay has a population of approximately 949,787.
Overlay and Dialing Rules
- Area Code: 337
- State: Louisiana
- Type: General Purpose Code
- In Service Date: October 11, 1999
- Overlay Complex: 337
- Local Dialing Plan: This area does require you to dial the area code when calling locally.
Estimated Number of Assigned Phone Numbers in Area Code 337
This area code is ranked 202nd out of 363 nationwide in estimated assigned phone numbers. Within the state territory it serves, it is ranked 3rd out of 5.
4,492,000
Estimated Service-Type Mix of Assigned Phone Numbers in Area Code 337
Wireless
1,536,000 assigned
34.19%
Wireline and VoIP
2,314,000 assigned
51.51%
Other / Unclassified
642,000 assigned
14.29%
Estimated Share of Wireless Numbers Originally Assigned to Each Carrier in Area Code 337
Estimated assigned wireless phone numbers: 1,536,000
Numbers may later be ported to another carrier, but this chart reflects original number assignment, not current subscriber share.
AT&T Wireless 897,000 (58.40%)
VOICESTREAM GSM I, LLC 241,000 (15.69%)
Verizon Wireless 207,000 (13.48%)
T-Mobile 182,000 (11.85%)
Optimum Mobile 8,000 (0.52%)
DETEL WIRELESS, LLC - LA 1,000 (0.07%)
Estimated Share of Wireline and VoIP Numbers Originally Assigned to Each Carrier in Area Code 337
Estimated assigned wireline and VoIP phone numbers: 2,314,000
Bandwidth 205,000 (8.86%)
Comcast Business 103,000 (4.45%)
TERRA NOVA TELECOM INC. 69,000 (2.98%)
LOUISIANA COMPETITIVE TELECOMMUNICATIONS, INC. 67,000 (2.90%)
PAETEC ITEL, LLC 51,000 (2.20%)
CEBRIDGE TELECOM LA, LLC D/B/A SUDDENLINK COMM LA 43,000 (1.86%)
CHARTER IP ENABLED SERVICES, LLC 39,000 (1.69%)
Other / Unclassified Assigned Numbering in Area Code 337
Estimated assigned other or unclassified phone numbers: 642,000
BRIGHTSPEED OF LOUISIANA, LLC 192,000 (29.91%)
TELEPORT COMMUNICATIONS AMERICA LA - LLC 74,000 (11.53%)
CAMERON TEL CO 70,000 (10.90%)
SPOK, INC. 60,000 (9.35%)
ADVANCED TEL., INC. - LA 50,000 (7.79%)
KAPLAN TEL. CO. 50,000 (7.79%)
IP HORIZON LLC 35,000 (5.45%)
LAFAYETTE CITY-PARISH CONSOLIDATED GOVERNMENT - LA 25,000 (3.89%)
TON80 COMMUNICATIONS, LLC 25,000 (3.89%)
FRACTEL, LLC 12,000 (1.87%)
LBH, LLC DBA CAMERON COMMUNICATIONS - LA 12,000 (1.87%)
AMERICAN MESSAGING SERVICES, LLC 10,000 (1.56%)
Cities and Towns in Area Code 337
Abbeville, Louisiana Arnaudville, Louisiana Baldwin, Louisiana Basile, Louisiana Breaux Bridge, Louisiana Broussard, Louisiana Cameron, Louisiana Cankton, Louisiana Carencro, Louisiana Carlyss, Louisiana Centerville, Louisiana Chataignier, Louisiana Church Point, Louisiana Creole, Louisiana Crowley, Louisiana Delcambre, Louisiana Dequincy, Louisiana Deridder, Louisiana Duson, Louisiana Elton, Louisiana Erath, Louisiana Eunice, Louisiana Fenton, Louisiana Forked Island, Louisiana Franklin, Louisiana Grand Chenier, Louisiana Gueydan, Louisiana Hackberry, Louisiana Hayes, Louisiana Henderson, Louisiana Iota, Louisiana Iowa, Louisiana Jeanerette, Louisiana Jennings, Louisiana John, Louisiana Kaplan, Louisiana Kinder, Louisiana Krotz Springs, Louisiana Lacassine, Louisiana Lafayette, Louisiana Lake Arthur, Louisiana Lake Charles, Louisiana Lawtell, Louisiana Leesville, Louisiana Leonville, Louisiana Loreauville, Louisiana Mamou, Louisiana Melville, Louisiana Merryville, Louisiana New Iberia, Louisiana Oberlin, Louisiana Opelousas, Louisiana Parks, Louisiana Pecan Island, Louisiana Pine Prairie, Louisiana Port Barre, Louisiana Ragley, Louisiana Rayne, Louisiana Reeves, Louisiana Roanoke, Louisiana Saint Martinville, Louisiana Starks, Louisiana Sugartown, Louisiana Sulphur, Louisiana Sunset, Louisiana Sweet Lake, Louisiana Thornwell, Louisiana Turkey Creek, Louisiana Ville Platte, Louisiana Vinton, Louisiana Washington, Louisiana Weeks, Louisiana Welsh, Louisiana Youngsville, Louisiana How These Figures Were Built
These figures are estimates based on public phone-number assignment records. They are meant to show the likely mix of assigned phone numbers associated with area code 337, not live customer counts.
Some providers may have assigned phone numbers tied to this area code even if they do not actively market or sell service locally. These figures reflect public number-assignment records, not confirmed local service availability.
They also do not reflect number portability at the individual phone-number level, so some numbers may now be used on a different network or by a different provider than the original assignment records suggest.
Population data and locality matching provided by GeoNames.
Last refreshed: April 15, 2026 6:22 pm