| District of Louisiana area codes: 337 | |
|---|---|
| Country | United States |
| State/Province | Louisiana |
| Major City | Lafayette |
| Time Zone | Central (UTC-06:00) |
| Prefix | County | Primary City | Company |
|---|---|---|---|
| 337-308 | Saint Landry | Opelousas, LA | New Cingular Wireless PCS - GA |
| 337-309 | Calcasieu | Lake Charles, LA | New Cingular Wireless PCS - GA |
| 337-310 | Calcasieu | Lake Charles, LA | Tw Telecom Of Louisiana LLC |
| 337-312 | Calcasieu | Lake Charles, LA | Tw Telecom Of Louisiana LLC |
| 337-313 | Calcasieu | Sulphur, LA | Level 3 Communications |
| 337-314 | Lafayette | Lafayette, LA | Deltacom |
| 337-315 | Lafayette | Lafayette, LA | New Cingular Wireless PCS - GA |
| 337-316 | Lafayette | Lafayette, LA | Sprint Spectrum L.p. |
| 337-317 | Calcasieu | Dequincy, LA | New Cingular Wireless PCS - GA |
| 337-319 | Lafayette | Lafayette, LA | Sprint Spectrum L.p. |
| 337-320 | Allen | Oberlin, LA | Sprint Spectrum L.p. |
| 337-321 | Iberia | New Iberia, LA | New Cingular Wireless PCS - GA |
| 337-322 | Lafayette | Lafayette, LA | New Cingular Wireless PCS - GA |
| 337-323 | Saint Landry | Opelousas, LA | Deltacom |
| 337-324 | Calcasieu | Vinton, LA | New Cingular Wireless PCS - GA |
| 337-325 | Lafayette | Carencro, LA | Advanced Tel Inc. |
| 337-326 | Lafayette | Lafayette, LA | Level 3 Communications |
| 337-327 | Acadia | Crowley, LA | Deltacom |
| 337-328 | Beauregard | Sugartown, LA | Elizabeth Telephone Co. |
| 337-329 | Jefferson Davis | Jennings, LA | Cellco Partnership DBA Verizon Wireless |
There are 506 prefixes, In the code area, the major cities are Lafayette, LA;Lake Charles, LA;New Iberia, LA;Opel. The major city is Lafayette.