| Locality | Post Code |
|---|---|
| Minamihase (岩沼市) | 989-2454 |
| Nagaoka (岩沼市) | 989-2461 |
| Nishirokkaku (岩沼市) | 989-2446 |
| Ogawa (岩沼市) | 989-2471 |
| Oshiwake (岩沼市) | 989-2423 |
| Otecho (岩沼市) | 989-2442 |
| Others (岩沼市) | 989-2400 |
| Sakaecho (岩沼市) | 989-2473 |
| Sakura (岩沼市) | 989-2433 |
| Satonomori (岩沼市) | 989-2427 |
| Shiga (岩沼市) | 989-2465 |
| Shikishima (岩沼市) | 989-2476 |
| Shimonogo (岩沼市) | 989-2421 |
| Suehiro (岩沼市) | 989-2426 |
| Takekuma (岩沼市) | 989-2452, 989-2459 |
| Takenosato (岩沼市) | 989-2458 |
| Tamauranishi (岩沼市) | 989-2428 |
| Tateshita (岩沼市) | 989-2441 |
| Terashima (岩沼市) | 989-2425 |
| Yamato (岩沼市) | 989-2475 |
| Yamazakura (岩沼市) | 989-2462 |