Communes du district
| Commune | NPA | Habitants |
|---|---|---|
| Altstätten | 9450 +5 | 12 581 |
| Au (SG) | 9434 +1 | 8 628 |
| Balgach | 9436 +2 | 5 210 |
| Berneck | 9442 +3 | 4 008 |
| Diepoldsau | 9444 +2 | 6 939 |
| Eichberg | 9453 +1 | 1 617 |
| Marbach (SG) | 9437 | 2 169 |
| Oberriet (SG) | 9463 +3 | 9 373 |
| Rebstein | 9445 +1 | 5 077 |
| Rheineck | 9424 +2 | 3 514 |
| Rüthi (SG) | 9464 +1 | 2 633 |
| St. Margrethen | 9430 +2 | 6 718 |
| Widnau | 9443 +1 | 10 409 |