Communes du district
| Commune | NPA | Habitants |
|---|---|---|
| Erlinsbach (SO) | 5015 +1 | 3 736 |
| Hauenstein-Ifenthal | 4633 | 341 |
| Kienberg | 4468 | 526 |
| Lostorf | 4654 +1 | 4 129 |
| Niedergösgen | 5013 | 4 255 |
| Obergösgen | 4653 +1 | 2 490 |
| Stüsslingen | 4655 | 1 259 |
| Trimbach | 4632 +2 | 6 854 |
| Winznau | 4652 | 2 053 |
| Wisen (SO) | 4634 | 438 |