7 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 70380 | Morgan City | 21,043 |
| 70390 | Napoleonville | 7,397 |
| 70339 | Pierre Part | 4,510 |
| 70341 | Belle Rose | 3,857 |
| 70372 | Labadieville | 1,846 |
| 70393 | Plattenville | 154 |
| 70391 | Paincourtville | 73 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 7 ZCTAs in Assumption Parish, Louisiana (US Census).