Postal codes in Mashiko-machi, Haga-gun, Tochigi
栃木県芳賀郡益子町 — 23 postal codes. General code: 321-4200. Local government code 09342.
Address example
1-2-3 Ashinuma, Mashiko-machi, Haga-gun, Tochigi 321-4102, Japan
〒321-4102 栃木県芳賀郡益子町芦沼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 |
|---|---|
| 321-4200 | (any other address in this municipality) （下に掲載がない場合） Mashiko-machi, Haga-gun, Tochigi 321-4200, Japan |
| 321-4102 | Ashinuma 芦沼 Ashinuma, Mashiko-machi, Haga-gun, Tochigi 321-4102, Japan |
| 321-4223 | Umegauchi 梅ケ内 Umegauchi, Mashiko-machi, Haga-gun, Tochigi 321-4223, Japan |
| 321-4221 | Ogodo 大郷戸 Ogodo, Mashiko-machi, Haga-gun, Tochigi 321-4221, Japan |
| 321-4104 | Osawa 大沢 Osawa, Mashiko-machi, Haga-gun, Tochigi 321-4104, Japan |
| 321-4103 | Ohira 大平 Ohira, Mashiko-machi, Haga-gun, Tochigi 321-4103, Japan |
| 321-4101 | Oyake 小宅 Oyake, Mashiko-machi, Haga-gun, Tochigi 321-4101, Japan |
| 321-4212 | Kamioba 上大羽 Kamioba, Mashiko-machi, Haga-gun, Tochigi 321-4212, Japan |
| 321-4226 | Kamiyama 上山 Kamiyama, Mashiko-machi, Haga-gun, Tochigi 321-4226, Japan |
| 321-4105 | Kitanaka 北中 Kitanaka, Mashiko-machi, Haga-gun, Tochigi 321-4105, Japan |
| 321-4222 | Koizumi 小泉 Koizumi, Mashiko-machi, Haga-gun, Tochigi 321-4222, Japan |
| 321-4211 | Shimooba 下大羽 Shimooba, Mashiko-machi, Haga-gun, Tochigi 321-4211, Japan |
| 321-4218 | Jonaizaka 城内坂 Jonaizaka, Mashiko-machi, Haga-gun, Tochigi 321-4218, Japan |
| 321-4225 | Nagatsutsumi 長堤 Nagatsutsumi, Mashiko-machi, Haga-gun, Tochigi 321-4225, Japan |
| 321-4106 | Nanai 七井 Nanai, Mashiko-machi, Haga-gun, Tochigi 321-4106, Japan |
| 321-4107 | Nanaichuo 七井中央 Nanaichuo, Mashiko-machi, Haga-gun, Tochigi 321-4107, Japan |
| 321-4215 | Nabatame 生田目 Nabatame, Mashiko-machi, Haga-gun, Tochigi 321-4215, Japan |
| 321-4216 | Hanawa 塙 Hanawa, Mashiko-machi, Haga-gun, Tochigi 321-4216, Japan |
| 321-4227 | Higashidai 東田井 Higashidai, Mashiko-machi, Haga-gun, Tochigi 321-4227, Japan |
| 321-4214 | Maezawa 前沢 Maezawa, Mashiko-machi, Haga-gun, Tochigi 321-4214, Japan |
| 321-4217 | Mashiko 益子 Mashiko, Mashiko-machi, Haga-gun, Tochigi 321-4217, Japan |
| 321-4224 | Motonuma 本沼 Motonuma, Mashiko-machi, Haga-gun, Tochigi 321-4224, Japan |
| 321-4213 | Yamamoto 山本 Yamamoto, Mashiko-machi, Haga-gun, Tochigi 321-4213, 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.