| Locality | Postal Code |
|---|---|
| Postal/ZIP Codes in Bell City, Calcasieu | 70630 |
| Postal/ZIP Codes in Calcasieu Marine Tower, Calcasieu | 70629 |
| Postal/ZIP Codes in Dequincy, Calcasieu | 70633 |
| Postal/ZIP Codes in Drew, Calcasieu | 70607 |
| Postal/ZIP Codes in Grand Lake, Calcasieu | 70601 |
| Postal/ZIP Codes in Hayes, Calcasieu | 70646 |
| Postal/ZIP Codes in Iowa, Calcasieu | 70647 |
| Postal/ZIP Codes in Lake Charles, Calcasieu | 70601, 70605, 70606, 70607, 70611, … |
| Postal/ZIP Codes in Moss Bluff, Calcasieu | 70611 |
| Postal/ZIP Codes in Starks, Calcasieu | 70661 |
| Postal/ZIP Codes in Sulphur, Calcasieu | 70663, 70665 |
| Postal/ZIP Codes in Sweet Lake, Calcasieu | 70605 |
| Postal/ZIP Codes in Vinton, Calcasieu | 70668 |
| Postal/ZIP Codes in Westlake, Calcasieu | 70669 |