| Post Office | El Dorado |
| Division | Butler |
| Pincode | 67042 |
| Post Office | Andover |
| Division | Butler |
| Pincode | 67002 |
| Post Office | Augusta |
| Division | Butler |
| Pincode | 67010 |
| Post Office | Rose Hill |
| Division | Butler |
| Pincode | 67133 |
| Post Office | Douglass |
| Division | Butler |
| Pincode | 67039 |
| Post Office | Towanda |
| Division | Butler |
| Pincode | 67144 |