| Locality | Postal Code |
|---|---|
| Postal/ZIP Codes in Tozaki (糸魚川市) | 949-1305 |
| Postal/ZIP Codes in Tsubono (糸魚川市) | 949-1208 |
| Postal/ZIP Codes in Tsuchikura (糸魚川市) | 949-1222 |
| Postal/ZIP Codes in Tsuchishio (糸魚川市) | 949-1205 |
| Postal/ZIP Codes in Tsumuriyama (糸魚川市) | 941-0077 |
| Postal/ZIP Codes in Tsutsuishi (糸魚川市) | 949-1306 |
| Postal/ZIP Codes in Uekari (糸魚川市) | 941-0064 |
| Postal/ZIP Codes in Uenoyama (糸魚川市) | 949-0551 |
| Postal/ZIP Codes in Ueyoko (糸魚川市) | 949-0553 |
| Postal/ZIP Codes in Uta (糸魚川市) | 949-0307 |
| Postal/ZIP Codes in Uwano (糸魚川市) | 949-0532 |
| Postal/ZIP Codes in Uzuraishi (糸魚川市) | 949-1336 |
| Postal/ZIP Codes in Washio (糸魚川市) | 949-1318 |
| Postal/ZIP Codes in Yamadera (糸魚川市) | 949-0543 |
| Postal/ZIP Codes in Yamaguchi (糸魚川市) | 949-0554 |
| Postal/ZIP Codes in Yamamoto (糸魚川市) | 941-0072 |
| Postal/ZIP Codes in Yamanobo (糸魚川市) | 949-0463 |
| Postal/ZIP Codes in Yamatogawa (糸魚川市) | 941-0007 |
| Postal/ZIP Codes in Yokomachi (糸魚川市) | 941-0067 |
| Postal/ZIP Codes in Yosho (糸魚川市) | 949-0558 |
| Postal/ZIP Codes in Yotsuya (糸魚川市) | 941-0016 |