Notering byer (14 sted (er)). Velg byen for å se postnummeret (s):
| Okabe (1) Okada (2) Okahigashimachi (1) Okajima (1) Okamae (1) Okanouchi (1) Okanuma (1) | Okashiro (1) Oki (1) Okidaka (1) Okinazawa (1) Okinouchi (1) Okitamachou (1) Okugawaiisato (1) |
