16 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 70433 | Covington | 41,770 |
| 70458 | Slidell | 39,385 |
| 70461 | Slidell | 33,572 |
| 70448 | Mandeville | 25,851 |
| 70471 | Mandeville | 23,745 |
| 70460 | Slidell | 21,880 |
| 70435 | Covington | 21,525 |
| 70447 | Madisonville | 17,473 |
| 70452 | Pearl River | 13,290 |
| 70445 | Lacombe | 9,421 |
| 70420 | Abita Springs | 7,965 |
| 70437 | Folsom | 7,696 |
| 70431 | Bush | 5,150 |
| 70464 | Talisheek | 210 |
| 70457 | Saint Benedict | 131 |
| 70463 | Sun | 74 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 16 ZCTAs in St. Tammany Parish, Louisiana (US Census).