Communes du district
| Commune | NPA | Habitants |
|---|---|---|
| Hellikon | 4316 +1 | 850 |
| Kaiseraugst | 4303 | 5 824 |
| Magden | 4312 +1 | 3 888 |
| Möhlin | 4313 | 11 389 |
| Mumpf | 4322 | 1 563 |
| Obermumpf | 4324 | 1 081 |
| Olsberg | 4305 +1 | 360 |
| Rheinfelden | 4310 +2 | 13 820 |
| Schupfart | 4325 | 883 |
| Stein (AG) | 4332 | 3 512 |
| Wallbach | 4323 | 2 065 |
| Wegenstetten | 4317 | 1 017 |
| Zeiningen | 4314 +2 | 2 545 |
| Zuzgen | 4315 | 909 |