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St. Mary ZIP Codes — Louisiana (LA)
| City or Location | County or District | States or Territories | States or Territories Abbrieviation | ZIP Code or Postcode |
|---|---|---|---|---|
| Amelia | St. Mary | Louisiana | LA | 70340 |
| Berwick | St. Mary | Louisiana | LA | 70342 |
| Morgan City | St. Mary | Louisiana | LA | 70380 |
| Morgan City | St. Mary | Louisiana | LA | 70381 |
| Patterson | St. Mary | Louisiana | LA | 70392 |
| Baldwin | St. Mary | Louisiana | LA | 70514 |
| Centerville | St. Mary | Louisiana | LA | 70522 |
| Charenton | St. Mary | Louisiana | LA | 70523 |
| Franklin | St. Mary | Louisiana | LA | 70538 |
| Garden City | St. Mary | Louisiana | LA | 70540 |
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