| Locality | Post Code |
|---|---|
| Minamimachi (むつ市) | 035-0046 |
| Minatomachi (むつ市) | 035-0064 |
| Misatocho (むつ市) | 035-0068 |
| Nakamachi (むつ市) | 035-0062 |
| Nakanosawa (むつ市) | 035-0012 |
| Namikawacho (むつ市) | 035-0081 |
| Odaira (むつ市) | 035-0074 |
| Odairacho (むつ市) | 035-0083 |
| Ohatamachi (むつ市) | 039-4401 |
| Ohatamachi Shozugawa (むつ市) | 039-4402 |
| Okunai (むつ市) | 035-0011 |
| Omagari (むつ市) | 035-0042 |
| Ominato (むつ市) | 035-0096 |
| Ominatocho (むつ市) | 035-0093 |
| Ominato Hamacho (むつ市) | 035-0085 |
| Ominato Kamimachi (むつ市) | 035-0086 |
| Ominato Shincho (むつ市) | 035-0084 |
| Others (むつ市) | 035-0000 |
| Sakuragicho (むつ市) | 035-0094 |
| Sekine (むつ市) | 035-0022 |
| Shimmachi (むつ市) | 035-0051 |
| Shimokitacho (むつ市) | 035-0061 |
| Showacho (むつ市) | 035-0052 |
| Tanabu (むつ市) | 035-0021 |
| Tanabucho (むつ市) | 035-0034 |
| Tomabucho (むつ市) | 035-0055 |