| District/County in English | District/County in Chinese | Postal Code | Province |
|---|
| Tongliao City | 通辽市 | 028000 |
Inner Mongolia Autonomous Region
|
| Horqin District | 科尔沁区 | 028000 |
Inner Mongolia Autonomous Region
|
| Horqin Left Back Banner | 科尔沁左翼后旗 | 028100 |
Inner Mongolia Autonomous Region
|
| Hure Banner | 库伦旗 | 028200 |
Inner Mongolia Autonomous Region
|
| Naiman Banner | 奈曼旗 | 028300 |
Inner Mongolia Autonomous Region
|
| Kailu County | 开鲁县 | 028400 |
Inner Mongolia Autonomous Region
|
| Jarud Banner | 扎鲁特旗 | 029100 |
Inner Mongolia Autonomous Region
|
| Holingol City | 霍林郭勒市 | 029200 |
Inner Mongolia Autonomous Region
|
| Horqin Left Middle Banner | 科尔沁左翼中旗 | 029300 |
Inner Mongolia Autonomous Region
|