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