| Post Office | La Grande |
| Division | Union |
| Pincode | 97850 |
| Post Office | Elgin |
| Division | Union |
| Pincode | 97827 |
| Post Office | Union |
| Division | Union |
| Pincode | 97883 |
| Post Office | Cove |
| Division | Union |
| Pincode | 97824 |
| Post Office | Summerville |
| Division | Union |
| Pincode | 97876 |
| Post Office | North Powder |
| Division | Union |
| Pincode | 97867 |
| Post Office | Imbler |
| Division | Union |
| Pincode | 97841 |
7 City in Union | List of Zip Codes Location In Oregon and Your selected County Union