Notering byer (12 sted (er)). Velg byen for å se postnummeret (s):
| Oberanven (11) Oberdonven (1) Oberfeulen (2) Oberkorn (1) Oberpallen (1) Oberwampach (1) | Oetrange (6) Olingen (2) Olm (21) Openthalt (1) Ospern (1) Osweiler (3) |
