| Locality | Post Code |
|---|---|
| Akaiwa Doronoki (気仙沼市) | 988-0183 |
| Akaiwa Godantara (気仙沼市) | 988-0104 |
| Akaiwa Hada (気仙沼市) | 988-0167 |
| Akaiwa Hiragai (気仙沼市) | 988-0184 |
| Akaiwa Ishikabuto (気仙沼市) | 988-0182 |
| Akaiwa Kamihada (気仙沼市) | 988-0166 |
| Akaiwa Maeda (気仙沼市) | 988-0162 |
| Akaiwa Makisawa (気仙沼市) | 988-0171 |
| Akaiwa Minato (気仙沼市) | 988-0103 |
| Akaiwa Mizunashi (気仙沼市) | 988-0168 |
| Akaiwa Monomi (気仙沼市) | 988-0165 |
| Akaiwa Mukaemaeda (気仙沼市) | 988-0163 |
| Akaiwa Nagashiba (気仙沼市) | 988-0173 |
| Akaiwa Oda (気仙沼市) | 988-0185 |
| Akaiwa Oinomatsu (気仙沼市) | 988-0105 |
| Akaiwa Oishikura (気仙沼市) | 988-0172 |
| Akaiwa Otaki (気仙沼市) | 988-0174 |
| Akaiwa Shijuni (気仙沼市) | 988-0164 |
| Akaiwa Suginosawa (気仙沼市) | 988-0181 |
| Akaiwa Takamaeda (気仙沼市) | 988-0161 |
| Akaiwa Tatemori (気仙沼市) | 988-0102 |
| Akaiwa Tateshita (気仙沼市) | 988-0101 |
| Akasaka (気仙沼市) | 988-0075 |
| Akedo (気仙沼市) | 988-0062 |
| Aramachi (気仙沼市) | 988-0071 |
| Asahicho (気仙沼市) | 988-0034 |