| Locality | Postal Code |
|---|---|
| Postal/ZIP Codes in Nakagocho (豊橋市) | 441-8031 |
| Postal/ZIP Codes in Nakahamacho (豊橋市) | 441-8065 |
| Postal/ZIP Codes in Nakaharacho (豊橋市) | 441-3105, 441-3106 |
| Postal/ZIP Codes in Nakahashiracho (豊橋市) | 441-8037 |
| Postal/ZIP Codes in Nakaiwata (豊橋市) | 440-0832 |
| Postal/ZIP Codes in Nakamatsuyamacho (豊橋市) | 440-0875 |
| Postal/ZIP Codes in Nakanocho (豊橋市) | 441-8149 |
| Postal/ZIP Codes in Nakanomachi (豊橋市) | 440-0046 |
| Postal/ZIP Codes in Nakasekocho (豊橋市) | 440-0815 |
| Postal/ZIP Codes in Nakashibacho (豊橋市) | 440-0885 |
| Postal/ZIP Codes in Naminoecho (豊橋市) | 440-0003 |
| Postal/ZIP Codes in Nirengicho (豊橋市) | 440-0065 |
| Postal/ZIP Codes in Nishiakasawacho (豊橋市) | 441-3213 |
| Postal/ZIP Codes in Nishiguchicho (豊橋市) | 440-0841 |
| Postal/ZIP Codes in Nishihadacho (豊橋市) | 441-8081 |
| Postal/ZIP Codes in Nishihamacho (豊橋市) | 441-0156 |
| Postal/ZIP Codes in Nishihashiracho (豊橋市) | 441-8039 |
| Postal/ZIP Codes in Nishiiwata (豊橋市) | 440-0831 |