| Locality | Postal Code |
|---|---|
| Postal/ZIP Codes in Sunadacho (東松山市) | 355-0019 |
| Postal/ZIP Codes in Tagi (東松山市) | 355-0053 |
| Postal/ZIP Codes in Takasaka (東松山市) | 355-0047 |
| Postal/ZIP Codes in Tonoyamacho (東松山市) | 355-0003 |
| Postal/ZIP Codes in Wakamatsucho (東松山市) | 355-0037 |
| Postal/ZIP Codes in Yakyucho (東松山市) | 355-0028 |
| Postal/ZIP Codes in Yamazakicho (東松山市) | 355-0033 |
| Postal/ZIP Codes in Zaimokucho (東松山市) | 355-0016 |
| Postal/ZIP Codes in Miharacho (東松山市) | 355-0010 |
| Postal/ZIP Codes in Nakadacho (東松山市) | 355-0009 |