| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Sogacho, Chiba (蘇我町) | 260-0822 |
| Postal/ZIP Codes in Suehiro, Chiba (末広) | 260-0843 |
| Postal/ZIP Codes in Tonyacho, Chiba (問屋町) | 260-0025 |
| Postal/ZIP Codes in Tsubakimori, Chiba (椿森) | 260-0042 |
| Postal/ZIP Codes in Tsurusawacho, Chiba (鶴沢町) | 260-0003 |
| Postal/ZIP Codes in Unomoricho, Chiba (鵜の森町) | 260-0816 |
| Postal/ZIP Codes in Wakakusa, Chiba (若草) | 260-0821 |
| Postal/ZIP Codes in Yahagicho, Chiba (矢作町) | 260-0851 |
| Postal/ZIP Codes in Yuko, Chiba (祐光) | 260-0007 |