| Location | Type | Country | Class |
|---|---|---|---|
| Bucheggberg | District | 
|
3 |
| Dorneck | District |
|
3 |
| Gäu | District |
|
3 |
| Gösgen | District |
|
3 |
| Lebern | District |
|
3 |
| Olten | District |
|
3 |
| Solothurn | Commune |
|
3 |
| Thal | District |
|
3 |
| Thierstein | District |
|
3 |
| Wasseramt | District |
|
3 |