| population | |
| Boningen | 769 |
| Daeniken | 2914 |
| Dulliken | 5082 |
| Eppenberg-Woeschnau | 327 |
| Fulenbach | 1785 |
| population | |
| Gretzenbach | 2779 |
| Gunzgen | 1654 |
| Haegendorf | 5140 |
| Kappel (SO) | 3265 |
| Olten | 18399 |
| population | |
| Rickenbach (SO) | 1038 |
| Schoenenwerd | 4966 |
| Starrkirch-Wil | 1710 |
| Walterswil (SO) | 724 |
| Wangen bei Olten | 5134 |
 | EuroAirport Basel-Mulhouse-Freiburg Airport | ~ 39.44 km |
 | Emmen Air Base | ~ 41.06 km |
| Grenchen Airport | ~ 41.19 km |
| Zürich Airport | ~ 49.84 km |
| Buochs Airport | ~ 55.32 km |
| Bern-Belp Airport | ~ 56.98 km |
| Colmar-Houssen Airport | ~ 94.51 km |
 | Lahr Airport | ~ 114.13 km |
| St Gallen Altenrhein Airport | ~ 125.37 km |
