Notering byer (13 sted (er)). Velg byen for å se postnummeret (s):
| Okada (3) Okahotto (1) Okahottoshinden (1) Okanodaichou (1) Okayamadai (1) Oki (2) Okitsu (2) | Okitsukuboyamadai (1) Okiwatashi (2) Okugome (1) Okuno (1) Okuyama (1) Okuzure (1) |
