| Locality | Postal Code |
|---|---|
| Abukuma (岩沼市) | 989-2435 |
| Ainohara (岩沼市) | 989-2431 |
| Arai (岩沼市) | 989-2463 |
| Asahi (岩沼市) | 989-2474 |
| Asahino (岩沼市) | 989-2478 |
| Byodo (岩沼市) | 989-2457 |
| Chuo (岩沼市) | 989-2432 |
| Daishowa (岩沼市) | 989-2453 |
| Dogasaki (岩沼市) | 989-2451 |
| Fujinami (岩沼市) | 989-2434 |
| Fukiage (岩沼市) | 989-2436 |
| Fukiagenishi (岩沼市) | 989-2437 |
| Futaki (岩沼市) | 989-2448 |
| Hayamata (岩沼市) | 989-2424 |
| Higashiyachi (岩沼市) | 989-2477 |
| Honcho (岩沼市) | 989-2444 |
| Inaricho (岩沼市) | 989-2443 |
| Kajibashi (岩沼市) | 989-2472 |
| Kitahase (岩沼市) | 989-2455 |
| Kukominami (岩沼市) | 989-2422 |
| Kukonishi (岩沼市) | 989-2420 |
| Kuwabara (岩沼市) | 989-2445 |
| Kuwabaranishi (岩沼市) | 989-2447 |
| Matsugaoka (岩沼市) | 989-2456 |
| Megumino (岩沼市) | 989-2429 |
| Miiroyoshi (岩沼市) | 989-2464 |