| Place | Postal Code |
|---|---|
| 千代丸 (Chiyomaru, Chiba) | 297-0205 |
| 榎本 (Emoto, Chiba) | 297-0211 |
| 船木 (Funaki, Chiba) | 297-0207 |
| 針ケ谷 (Harigaya, Chiba) | 297-0217 |
| 金谷 (Kanaya, Chiba) | 297-0226 |
| 小榎本 (Koemoto, Chiba) | 297-0212 |
| 国府里 (Kori, Chiba) | 297-0203 |
| 味庄 (Misho, Chiba) | 297-0202 |
| 長富 (Nagadomi, Chiba) | 297-0214 |
| 長柄山 (Nagarayama, Chiba) | 297-0234 |
| 中野台 (Nakanodai, Chiba) | 297-0232 |
| 大庭 (Oniwa, Chiba) | 297-0222 |
| 刑部 (Osakabe, Chiba) | 297-0225 |
| その他 (Others, Chiba) | 297-0200 |
| 大津倉 (Ozukura, Chiba) | 297-0223 |
| 力丸 (Rikimaru, Chiba) | 297-0204 |
| 六地蔵 (Rokujizo, Chiba) | 297-0233 |
| 桜谷 (Sakuraya, Chiba) | 297-0218 |
| 皿木 (Saragi, Chiba) | 297-0235 |
| 高山 (Takayama, Chiba) | 297-0221 |
| 田代 (Tashiro, Chiba) | 297-0224 |
| 立鳥 (Tatsutori, Chiba) | 297-0216 |
| 徳増 (Tokumasu, Chiba) | 297-0213 |
| 鴇谷 (Toya, Chiba) | 297-0215 |
| 上野 (Ueno, Chiba) | 297-0201 |
| 山根 (Yamanne, Chiba) | 297-0206 |
| 山之郷 (Yamanogo, Chiba) | 297-0231 |
| Postal Codes in Chosei | |
|---|---|
| Chonan (長南町) | |
| Ichinomiya (一宮町) | |
| Mutsuzawa (睦沢町) | |
| Nagara (長柄町) | |
| Shirako (白子町) | |
| Chosei (長生村) | |