Postal codes in Oarai-machi, Higashiibaraki-gun, Ibaraki
茨城県東茨城郡大洗町 — 11 postal codes. General code: 311-1300. Local government code 08309.
Address example
1-2-3 Isohamacho, Oarai-machi, Higashiibaraki-gun, Ibaraki 311-1301, Japan
〒311-1301 茨城県東茨城郡大洗町磯浜町1-2-3
Replace 1-2-3 with the chome-ban-go (block and lot) number, and add the building and room number before it.
| Postal code | Town / English address |
|---|---|
| 311-1300 | (any other address in this municipality) （下に掲載がない場合） Oarai-machi, Higashiibaraki-gun, Ibaraki 311-1300, Japan |
| 311-1301 | Isohamacho 磯浜町 Isohamacho, Oarai-machi, Higashiibaraki-gun, Ibaraki 311-1301, Japan |
| 311-1302 | Isomichi 磯道 Isomichi, Oarai-machi, Higashiibaraki-gun, Ibaraki 311-1302, Japan |
| 311-1311 | Onukicho 大貫町 Onukicho, Oarai-machi, Higashiibaraki-gun, Ibaraki 311-1311, Japan |
| 311-1312 | Kamiyamacho 神山町 Kamiyamacho, Oarai-machi, Higashiibaraki-gun, Ibaraki 311-1312, Japan |
| 311-1306 | Gotanda 五反田 Gotanda, Oarai-machi, Higashiibaraki-gun, Ibaraki 311-1306, Japan |
| 311-1307 | Sakuramichi 桜道 Sakuramichi, Oarai-machi, Higashiibaraki-gun, Ibaraki 311-1307, Japan |
| 311-1303 | Tokodai 東光台 Tokodai, Oarai-machi, Higashiibaraki-gun, Ibaraki 311-1303, Japan |
| 311-1313 | Naritacho 成田町 Naritacho, Oarai-machi, Higashiibaraki-gun, Ibaraki 311-1313, Japan |
| 311-1305 | Minatochuo 港中央 Minatochuo, Oarai-machi, Higashiibaraki-gun, Ibaraki 311-1305, Japan |
| 311-1304 | Wado 和銅 Wado, Oarai-machi, Higashiibaraki-gun, Ibaraki 311-1304, Japan |
Source: Japan Post postal code data (UTF-8 edition, updated Aug 31, 2026) and romanized edition (KEN_ALL_ROME, June 2025). Japan Post does not claim copyright on postal code data and allows free redistribution. Romaji follows Japan Post (long vowels are not marked). * = romanized by this site from the kana reading because the town is not yet in the romanized edition.