13 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 70570 | Opelousas | 38,498 |
| 70512 | Arnaudville | 10,140 |
| 70584 | Sunset | 6,965 |
| 70577 | Port Barre | 3,988 |
| 70589 | Washington | 3,208 |
| 71353 | Melville | 1,668 |
| 70750 | Krotz Springs | 1,398 |
| 71358 | Palmetto | 953 |
| 70541 | Grand Coteau | 767 |
| 70551 | Leonville | 728 |
| 71356 | Morrow | 539 |
| 70550 | Lawtell | 38 |
| 71345 | Lebeau | 0 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 13 ZCTAs in St. Landry Parish, Louisiana (US Census).