| Zip Code | City | Population ↓ |
|---|---|---|
| 70769 | Prairieville | 48,856 |
| 70737 | Gonzales | 45,958 |
| 70774 | Saint Amant | 10,335 |
| 70734 | Geismar | 9,775 |
| 70346 | Donaldsonville | 9,347 |
| 70778 | Sorrento | 3,270 |
| 70725 | Darrow | 725 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 7 ZCTAs in Ascension Parish, Louisiana (US Census).