| Locality | Post Code |
|---|---|
| Takei (米沢市) | 992-0116 |
| Tateishi (米沢市) | 992-1471 |
| Tateyama (米沢市) | 992-0072 |
| Tateyamayagomachi (米沢市) | 992-0071 |
| Tatsumachi (米沢市) | 992-0015 |
| Tokumachi (米沢市) | 992-0047 |
| Torimachi (米沢市) | 992-0025 |
| Toyamamachi (米沢市) | 992-0066 |
| Tsunagi (米沢市) | 992-1474 |
| Yanazawa (米沢市) | 992-0077 |
| Yarai (米沢市) | 992-0074 |