| Locality | Postal Code |
|---|---|
| Postal/ZIP Codes in Shinkumicho (由利本荘市) | 015-0888 |
| Postal/ZIP Codes in Shinnosawa (由利本荘市) | 015-0033 |
| Postal/ZIP Codes in Shinsawa (由利本荘市) | 018-0842 |
| Postal/ZIP Codes in Sorimachi (由利本荘市) | 015-0081 |
| Postal/ZIP Codes in Sugumi (由利本荘市) | 015-0833 |
| Postal/ZIP Codes in Sunagoshita (由利本荘市) | 015-0875 |
| Postal/ZIP Codes in Takao (由利本荘市) | 018-0844 |
| Postal/ZIP Codes in Taki (由利本荘市) | 018-0905 |
| Postal/ZIP Codes in Takinosawa (由利本荘市) | 015-0083 |
| Postal/ZIP Codes in Tamachi (由利本荘市) | 015-0822 |
| Postal/ZIP Codes in Tamanoike (由利本荘市) | 015-0044 |
| Postal/ZIP Codes in Taniyamakoji (由利本荘市) | 015-0804 |
| Postal/ZIP Codes in Tate (由利本荘市) | 015-0086 |
| Postal/ZIP Codes in Tatemae (由利本荘市) | 015-0063 |
| Postal/ZIP Codes in Teraushiro (由利本荘市) | 015-0857 |
| Postal/ZIP Codes in Todoroki (由利本荘市) | 015-0061 |
| Postal/ZIP Codes in Tokusawa (由利本荘市) | 018-0732 |
| Postal/ZIP Codes in Toritame (由利本荘市) | 015-0089 |