The state of Louisiana is served by the following area codes:
- 225, which serves the Baton Rouge area and parts of south central Louisiana
- 318, which serves northern Louisiana
- 337, which serves southwestern Louisiana
- 504, which serves the New Orleans area
- 985, which serves the sections of southeast Louisiana which are not within the 504 area code
The state of Louisiana is served by the following area codes:
- 225, which serves the Baton Rouge area and parts of south central Louisiana
- 318, which serves northern Louisiana
- 337, which serves southwestern Louisiana
- 504, which serves the New Orleans area
- 985, which serves the sections of southeast Louisiana which are not within the 504 area code