| population | |
| Alfter | 23521 |
| Bad Honnef | 25738 |
| Bornheim | 48435 |
| Eitorf | 18751 |
| Hennef (Sieg) | 48002 |
| Koenigswinter | 41065 |
| Lohmar | 30452 |
| population | |
| Meckenheim | 24693 |
| Much | 14577 |
| Neunkirchen-Seelscheid | 19852 |
| Niederkassel | 38694 |
| Rheinbach | 26831 |
| Ruppichteroth | 10496 |
| Sankt Augustin | 55563 |
 | Bonn-Hangelar Airport | ~ 7.14 km |
| Cologne Bonn Airport | ~ 14.64 km |
| Siegerland Airport | ~ 57.94 km |
| Düsseldorf Airport | ~ 68.50 km |
| Mönchengladbach Airport | ~ 74.66 km |
| Essen Mülheim Airport | ~ 75.12 km |
| Aachen-Merzbrück Airport | ~ 76.06 km |
| Dortmund Airport | ~ 87.91 km |
| Geilenkirchen Air Base | ~ 88.61 km |
