| Sr. No. | Branch Name | Postal Code |
|---|---|---|
| 1 | Umamachi | 850-0022 |
| 2 | Nagasaki-shi Yaku-shi Yo | 850-0031 |
| 3 | Ohato | 850-0036 |
| 4 | Hamanomachi | 850-0853 |
| 5 | Kencho | 850-0861 |
| 6 | Nagasaki | 850-0876 |
| 7 | Ora | 850-0918 |
| 8 | Shintomachi | 850-0954 |
| 9 | Himi | 851-0121 |
| 10 | Higashi Nagasaki | 851-0133 |
| 11 | Nomo | 851-0505 |
| 12 | Nagasaki Giyoko | 851-2211 |
| 13 | Fujimimachi | 852-8022 |
| 14 | Nishi Machi | 852-8042 |
| 15 | Nameshi | 852-8061 |
| 16 | Urakami | 852-8105 |
| 17 | Heiwamachi | 852-8116 |
| 18 | Motohara | 852-8132 |
| 19 | Chitosepia | 852-8135 |
| 20 | Sumiyoshi | 852-8154 |
| 21 | Fukue | 853-0001 |
| 22 | Isahaya | 854-0025 |
| 23 | Isahayachiyuukakudanchi | 854-0065 |
| 24 | Isahayaekimae | 854-0071 |
| 25 | Nishi Isahaya | 854-0074 |