| Locality | Postal Code |
|---|---|
| Postal/ZIP Codes in Sakaecho (草加市) | 340-0011 |
| Postal/ZIP Codes in Seimon (草加市) | 340-0055 |
| Postal/ZIP Codes in Sezaki (草加市) | 340-0022 |
| Postal/ZIP Codes in Shimmei (草加市) | 340-0012 |
| Postal/ZIP Codes in Shinei (草加市) | 340-0056 |
| Postal/ZIP Codes in Shinzencho (草加市) | 340-0054 |
| Postal/ZIP Codes in Soka (草加市) | 340-0043 |
| Postal/ZIP Codes in Sumiyoshi (草加市) | 340-0014 |
| Postal/ZIP Codes in Takasago (草加市) | 340-0015 |
| Postal/ZIP Codes in Yahatacho (草加市) | 340-0006 |
| Postal/ZIP Codes in Yanagishimacho (草加市) | 340-0033 |
| Postal/ZIP Codes in Yatsuka (草加市) | 340-0028 |
| Postal/ZIP Codes in Yatsukacho (草加市) | 340-0023 |
| Postal/ZIP Codes in Yatsuka Kamicho (草加市) | 340-0024 |
| Postal/ZIP Codes in Yatsuka Nakacho (草加市) | 340-0025 |
| Postal/ZIP Codes in Yoshicho (草加市) | 340-0017 |
| Postal/ZIP Codes in Teshiro (草加市) | 340-0021 |