Postal codes in Iwate-machi, Iwate-gun, Iwate
岩手県岩手郡岩手町 — 15 postal codes. General code: 028-4300. Local government code 03303.
Address example
1-2-3 Itsukaichi, Iwate-machi, Iwate-gun, Iwate 028-4307, Japan
〒028-4307 岩手県岩手郡岩手町五日市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 |
|---|---|
| 028-4300 | (any other address in this municipality) （下に掲載がない場合） Iwate-machi, Iwate-gun, Iwate 028-4300, Japan |
| 028-4307 | Itsukaichi 五日市 Itsukaichi, Iwate-machi, Iwate-gun, Iwate 028-4307, Japan |
| 028-4421 | Ikkatai 一方井 Ikkatai, Iwate-machi, Iwate-gun, Iwate 028-4421, Japan |
| 028-4303 | Ekarinai 江刈内 Ekarinai, Iwate-machi, Iwate-gun, Iwate 028-4303, Japan |
| 028-4211 | Kawaguchi 川口 Kawaguchi, Iwate-machi, Iwate-gun, Iwate 028-4211, Japan |
| 028-4305 | Kubo 久保 Kubo, Iwate-machi, Iwate-gun, Iwate 028-4305, Japan |
| 028-4424 | Kuroishi 黒石 Kuroishi, Iwate-machi, Iwate-gun, Iwate 028-4424, Japan |
| 028-4426 | Kuronai 黒内 Kuronai, Iwate-machi, Iwate-gun, Iwate 028-4426, Japan |
| 028-4304 | Kodaki 子抱 Kodaki, Iwate-machi, Iwate-gun, Iwate 028-4304, Japan |
| 028-4302 | Daibo 大坊 Daibo, Iwate-machi, Iwate-gun, Iwate 028-4302, Japan |
| 028-4423 | Tsuchikawa 土川 Tsuchikawa, Iwate-machi, Iwate-gun, Iwate 028-4423, Japan |
| 028-4301 | Numakunai 沼宮内 Numakunai, Iwate-machi, Iwate-gun, Iwate 028-4301, Japan |
| 028-4425 | Hakita 葉木田 Hakita, Iwate-machi, Iwate-gun, Iwate 028-4425, Japan |
| 028-4422 | Bo 坊 Bo, Iwate-machi, Iwate-gun, Iwate 028-4422, Japan |
| 028-4306 | Mido 御堂 Mido, Iwate-machi, Iwate-gun, Iwate 028-4306, 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.