- Janie
- Jims Island
- Jean Lafitte
- Jeanerette
- Joes Island
- Japan Island
- Jaquines Island
- Jessies Island
- Jesuit Bend
- Jacoby
- Jarreau
- Jay
- Jefferson Heights
- Jefferson Island
- Jigger
- Jones
- Jonesburg
- Joyce
- Juanita
- Jack
- Johnson
- Jack Island
- Jaco Mobile Home Park
- Johnson
- Julien
- Johnson Island
- Joe's Mobile Home Park
- Jones Island
- Justina
- Johnson Ridge