| population | |
| Bezirk Bucheggberg | 8009 |
| Bezirk Dorneck | 20802 |
| Bezirk Gaeu | 22005 |
| Bezirk Goesgen | 24793 |
| population | |
| Bezirk Lebern | 46439 |
| Bezirk Olten | 56109 |
| Bezirk Solothurn | 16465 |
| Bezirk Thal | 14752 |
| population | |
| Bezirk Thierstein | 14802 |
| Bezirk Wasseramt | 52949 |
 | Grenchen Airport | ~ 8.45 km |
| Bern-Belp Airport | ~ 33.09 km |
 | EuroAirport Basel-Mulhouse-Freiburg Airport | ~ 42.18 km |
| Emmen Air Base | ~ 60.78 km |
| Buochs Airport | ~ 71.36 km |
| Zürich Airport | ~ 82.18 km |
| Colmar-Houssen Airport | ~ 100.71 km |
| Sion Airport | ~ 111.24 km |
 | Lahr Airport | ~ 130.86 km |
