| Post Office | Marion |
| Division | Grant |
| Pincode | 46953 |
| Post Office | Marion |
| Division | Grant |
| Pincode | 46952 |
| Post Office | Gas City |
| Division | Grant |
| Pincode | 46933 |
| Post Office | Upland |
| Division | Grant |
| Pincode | 46989 |
| Post Office | Fairmount |
| Division | Grant |
| Pincode | 46928 |
| Post Office | Jonesboro |
| Division | Grant |
| Pincode | 46938 |