Kode Area di Köln
Kota Terdekat
| Kota | Wilayah | Negara | Populasi | Kode Area | Kode Pos |
|---|---|---|---|---|---|
| Frechen | Nordrhein-Westfalen | Jerman | 48,733 | 2234 | 50226 |
| Hürth | Nordrhein-Westfalen | Jerman | 54,678 | 2233 | 50354 |
| Leverkusen | Nordrhein-Westfalen | Jerman | 162,738 | 2173, 2171, 214 | 51371, 51373, 51375, 51377 |
| Porz am Rhein | Nordrhein-Westfalen | Jerman | 13,785 | 2203 | — |
| Wesseling | Nordrhein-Westfalen | Jerman | 35,665 | 2236 | 50389 |