| Locality | Postal Code |
|---|---|
| Postal/ZIP Codes in Teshima (熊谷市) | 360-0121 |
| Postal/ZIP Codes in Tode (熊谷市) | 360-0022 |
| Postal/ZIP Codes in Tonyacho (熊谷市) | 360-0024 |
| Postal/ZIP Codes in Tsuda (熊谷市) | 369-0101 |
| Postal/ZIP Codes in Tsudashinden (熊谷市) | 360-0132 |
| Postal/ZIP Codes in Tsukimicho (熊谷市) | 360-0825 |
| Postal/ZIP Codes in Tsukuba (熊谷市) | 360-0037 |
| Postal/ZIP Codes in Yagii (熊谷市) | 360-0164 |
| Postal/ZIP Codes in Yagita (熊谷市) | 360-0233 |
| Postal/ZIP Codes in Yatogo (熊谷市) | 360-0203 |
| Postal/ZIP Codes in Yatsukuchi (熊谷市) | 360-0218 |
| Postal/ZIP Codes in Yayoi (熊谷市) | 360-0044 |
| Postal/ZIP Codes in Zengashima (熊谷市) | 360-0211 |