Postal codes in Chonan-machi, Chosei-gun, Chiba
千葉県長生郡長南町 — 34 postal codes. General code: 297-0100. Local government code 12427.
Address example
1-2-3 Ichinono, Chonan-machi, Chosei-gun, Chiba 297-0144, Japan
〒297-0144 千葉県長生郡長南町市野々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 |
|---|---|
| 297-0100 | (any other address in this municipality) （下に掲載がない場合） Chonan-machi, Chosei-gun, Chiba 297-0100, Japan |
| 297-0144 | Ichinono 市野々 Ichinono, Chonan-machi, Chosei-gun, Chiba 297-0144, Japan |
| 297-0103 | Imaizumi 今泉 Imaizumi, Chonan-machi, Chosei-gun, Chiba 297-0103, Japan |
| 297-0101 | Iwakawa 岩川 Iwakawa, Chonan-machi, Chosei-gun, Chiba 297-0101, Japan |
| 297-0154 | Iwanade 岩撫 Iwanade, Chonan-machi, Chosei-gun, Chiba 297-0154, Japan |
| 297-0142 | Ozawa 小沢 Ozawa, Chonan-machi, Chosei-gun, Chiba 297-0142, Japan |
| 297-0136 | Obuta 小生田 Obuta, Chonan-machi, Chosei-gun, Chiba 297-0136, Japan |
| 297-0125 | Kasamori 笠森 Kasamori, Chonan-machi, Chosei-gun, Chiba 297-0125, Japan |
| 297-0137 | Kamionoda 上小野田 Kamionoda, Chonan-machi, Chosei-gun, Chiba 297-0137, Japan |
| 297-0132 | Kyuden 給田 Kyuden, Chonan-machi, Chosei-gun, Chiba 297-0132, Japan |
| 297-0123 | Kuramochi 蔵持 Kuramochi, Chonan-machi, Chosei-gun, Chiba 297-0123, Japan |
| 297-0122 | Sakamoto 坂本 Sakamoto, Chonan-machi, Chosei-gun, Chiba 297-0122, Japan |
| 297-0145 | Satsubo 佐坪 Satsubo, Chonan-machi, Chosei-gun, Chiba 297-0145, Japan |
| 297-0134 | Shibahara 芝原 Shibahara, Chonan-machi, Chosei-gun, Chiba 297-0134, Japan |
| 297-0135 | Jihiki 地引 Jihiki, Chonan-machi, Chosei-gun, Chiba 297-0135, Japan |
| 297-0138 | Shimonoda 下小野田 Shimonoda, Chonan-machi, Chosei-gun, Chiba 297-0138, Japan |
| 297-0111 | Suda 須田 Suda, Chonan-machi, Chosei-gun, Chiba 297-0111, Japan |
| 297-0113 | Sekibara 関原 Sekibara, Chonan-machi, Chosei-gun, Chiba 297-0113, Japan |
| 297-0114 | Senjudo 千手堂 Senjudo, Chonan-machi, Chosei-gun, Chiba 297-0114, Japan |
| 297-0115 | Senda 千田 Senda, Chonan-machi, Chosei-gun, Chiba 297-0115, Japan |
| 297-0155 | Takebayashi 竹林 Takebayashi, Chonan-machi, Chosei-gun, Chiba 297-0155, Japan |
| 297-0105 | Tanage 棚毛 Tanage, Chonan-machi, Chosei-gun, Chiba 297-0105, Japan |
| 297-0121 | Chonan 長南 Chonan, Chonan-machi, Chosei-gun, Chiba 297-0121, Japan |
| 297-0133 | Toyohara 豊原 Toyohara, Chonan-machi, Chosei-gun, Chiba 297-0133, Japan |
| 297-0131 | Nakahara 中原 Nakahara, Chonan-machi, Chosei-gun, Chiba 297-0131, Japan |
| 297-0124 | Fukasawa 深沢 Fukasawa, Chonan-machi, Chosei-gun, Chiba 297-0124, Japan |
| 297-0141 | Hoonji 報恩寺 Hoonji, Chonan-machi, Chosei-gun, Chiba 297-0141, Japan |
| 297-0104 | Matadomi 又富 Matadomi, Chonan-machi, Chosei-gun, Chiba 297-0104, Japan |
| 297-0152 | Mizunuma 水沼 Mizunuma, Chonan-machi, Chosei-gun, Chiba 297-0152, Japan |
| 297-0143 | Miharadai 美原台 Miharadai, Chonan-machi, Chosei-gun, Chiba 297-0143, Japan |
| 297-0151 | Myogazawa 茗荷沢 Myogazawa, Chonan-machi, Chosei-gun, Chiba 297-0151, Japan |
| 297-0102 | Motodai 本台 Motodai, Chonan-machi, Chosei-gun, Chiba 297-0102, Japan |
| 297-0153 | Yamauchi 山内 Yamauchi, Chonan-machi, Chosei-gun, Chiba 297-0153, Japan |
| 297-0112 | Yonemichi 米満 Yonemichi, Chonan-machi, Chosei-gun, Chiba 297-0112, 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.