Notering byer (16 sted (er)). Velg byen for å se postnummeret (s):
| Oka (1) Okachou (1) Okadachou (1) Okadani (1) Okade (1) Okamachi (1) Okamotochou (1) Okaya (1) | Oki (1) Okino (1) Okishimachou (1) Oku (1) Okukawanami (1) Okunoike (1) Okura (1) Okushi (1) |
