| Locality | Postal Code |
|---|---|
| Postal/ZIP Codes in Oyama (潮来市) | 311-2441 |
| Postal/ZIP Codes in Shimasu (潮来市) | 311-2434 |
| Postal/ZIP Codes in Shingu (潮来市) | 311-2406 |
| Postal/ZIP Codes in Shinguminami (潮来市) | 311-2443 |
| Postal/ZIP Codes in Shitada (潮来市) | 311-2407 |
| Postal/ZIP Codes in Suka (潮来市) | 311-2448 |
| Postal/ZIP Codes in Sukaminami (潮来市) | 311-2446 |
| Postal/ZIP Codes in Susaki (潮来市) | 311-2408 |
| Postal/ZIP Codes in Tokushima (潮来市) | 311-2418 |
| Postal/ZIP Codes in Tsuiji (潮来市) | 311-2405 |
| Postal/ZIP Codes in Tsuji (潮来市) | 311-2421 |
| Postal/ZIP Codes in Ushibori (潮来市) | 311-2436 |
| Postal/ZIP Codes in Uwato (潮来市) | 311-2435 |
| Postal/ZIP Codes in Yonejima (潮来市) | 311-2417 |