| Locality | Postal Code |
|---|---|
| Postal/ZIP Codes in Tainamachi (延岡市) | 889-0516 |
| Postal/ZIP Codes in Takachihodori (延岡市) | 882-0042 |
| Postal/ZIP Codes in Takanomachi (延岡市) | 882-0064 |
| Postal/ZIP Codes in Tenjinkoji (延岡市) | 882-0811 |
| Postal/ZIP Codes in Tomimachi (延岡市) | 882-0016 |
| Postal/ZIP Codes in Tomiyamamachi (延岡市) | 882-0051 |
| Postal/ZIP Codes in Totoromachi (延岡市) | 889-0513 |
| Postal/ZIP Codes in Tsunetomimachi (延岡市) | 882-0836 |
| Postal/ZIP Codes in Tsurugaoka (延岡市) | 882-0865 |
| Postal/ZIP Codes in Urashiromachi (延岡市) | 882-0095 |
| Postal/ZIP Codes in Uwadamachi (延岡市) | 882-0084 |
| Postal/ZIP Codes in Wakabamachi (延岡市) | 882-0875 |
| Postal/ZIP Codes in Yamashitamachi (延岡市) | 882-0055 |
| Postal/ZIP Codes in Yamatsukimachi (延岡市) | 882-0037 |
| Postal/ZIP Codes in Yanazawamachi (延岡市) | 882-0815 |
| Postal/ZIP Codes in Yasuimachi (延岡市) | 882-0094 |
| Postal/ZIP Codes in Yoshinomachi (延岡市) | 882-0072 |
| Postal/ZIP Codes in Yugimachi (延岡市) | 882-0083 |
| Postal/ZIP Codes in Yunokidamachi (延岡市) | 882-0026 |