| Zip Code | City | Population ↓ |
|---|---|---|
| 70070 | Luling | 14,207 |
| 70047 | Destrehan | 13,467 |
| 70087 | Saint Rose | 7,238 |
| 70057 | Hahnville | 4,564 |
| 70030 | Des Allemands | 3,820 |
| 70079 | Norco | 2,809 |
| 70039 | Boutte | 2,240 |
| 70031 | Ama | 1,392 |
| 70080 | Paradis | 685 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 9 ZCTAs in St. Charles Parish, Louisiana (US Census).