Gemeinden im Bezirk Rheintal
| Gemeinde | PLZ | Einwohner |
|---|---|---|
| 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 |