| Locality | Postal Code |
|---|---|
| Akagawacho (むつ市) | 035-0044 |
| Arakawacho (むつ市) | 035-0079 |
| Asahicho (むつ市) | 035-0076 |
| Bunkyocho (むつ市) | 035-0082 |
| Chuo (むつ市) | 035-0073 |
| Ebikawacho (むつ市) | 035-0054 |
| Hommachi (むつ市) | 035-0035 |
| Jogasawa (むつ市) | 035-0095 |
| Junibayashi (むつ市) | 035-0067 |
| Kamikawacho (むつ市) | 035-0032 |
| Kanamagari (むつ市) | 035-0041 |
| Kanaya (むつ市) | 035-0072 |
| Kawamoricho (むつ市) | 035-0091 |
| Kawauchimachi (むつ市) | 039-5201, 039-4701 |
| Kawauchimachi Hinokigawa (むつ市) | 039-5202 |
| Kawauchimachi Kakizaki (むつ市) | 039-5304, 039-5204 |
| Kawauchimachi Shukunohe (むつ市) | 039-5203 |
| Kogawamachi (むつ市) | 035-0071 |
| Kuriyamacho (むつ市) | 035-0036 |
| Masagocho (むつ市) | 035-0075 |
| Matsubaracho (むつ市) | 035-0045 |
| Matsumoricho (むつ市) | 035-0078 |
| Matsuyamacho (むつ市) | 035-0065 |
| Midoricho (むつ市) | 035-0053 |
| Midorigaoka (むつ市) | 035-0066 |
| Minamiakagawacho (むつ市) | 035-0043 |