| population | |
| Bittwil | |
| Boeschen | |
| Erlehof | |
| Grasswil | |
| Grasswil, Oberdorf | |
| Grasswil, Post | |
| Grasswil, Regenhalden | |
| Grasswil, Sonne | |
| Gruet | |
| Heini | |
| Hermiswil | |
| Hermiswil, Bruecke |
 | Grenchen Airport | ~ 20.57 km |
| Bern-Belp Airport | ~ 28.98 km |
| Emmen Air Base | ~ 47.40 km |
 | EuroAirport Basel-Mulhouse-Freiburg Airport | ~ 51.13 km |
| Buochs Airport | ~ 57.21 km |
| Zürich Airport | ~ 74.09 km |
| Sion Airport | ~ 106.17 km |
| Colmar-Houssen Airport | ~ 110.31 km |
 | Lahr Airport | ~ 136.88 km |
