| Locality | Postal Code |
|---|---|
| Postal/ZIP Codes in Nishiyamacho (熱海市) | 413-0034 |
| Postal/ZIP Codes in Others (熱海市) | 413-0000 |
| Postal/ZIP Codes in Sakimicho (熱海市) | 413-0019 |
| Postal/ZIP Codes in Sakuracho (熱海市) | 413-0028 |
| Postal/ZIP Codes in Sakuragicho (熱海市) | 413-0025 |
| Postal/ZIP Codes in Sasaragadaicho (熱海市) | 413-0037 |
| Postal/ZIP Codes in Shimizucho (熱海市) | 413-0021 |
| Postal/ZIP Codes in Shimotaga (熱海市) | 413-0102 |
| Postal/ZIP Codes in Showacho (熱海市) | 413-0022 |
| Postal/ZIP Codes in Taharahoncho (熱海市) | 413-0011 |
| Postal/ZIP Codes in Wadacho (熱海市) | 413-0024 |
| Postal/ZIP Codes in Wadahamaminamicho (熱海市) | 413-0023 |
| Postal/ZIP Codes in Yamatecho (熱海市) | 413-0042 |