| Locality | Post Code |
|---|---|
| Adrian, Malheur | 97901 |
| Arcadia, Malheur | 97913 |
| Arock, Malheur | 97902 |
| Beulah, Malheur | 97911 |
| Brogan, Malheur | 97903 |
| Burns Junction, Malheur | 97910 |
| Cairo, Malheur | 97914 |
| Claude, Malheur | 97914 |
| Danner, Malheur | 97910 |
| Harper, Malheur | 97906 |
| Ironside, Malheur | 97908 |
| Jamieson, Malheur | 97909 |
| Jonesboro, Malheur | 97911 |
| Jordan Valley, Malheur | 97910 |
| Juntura, Malheur | 97911 |
| Nyssa, Malheur | 97913 |
| Ontario, Malheur | 97914 |
| Owyhee Corners, Malheur | 97913 |
| Riverside, Malheur | 97917 |
| Rome, Malheur | 97910 |
| South Mountain, Malheur | 97910 |
| Vale, Malheur | 97918 |
| Westfall, Malheur | 97920 |
| Willowcreek, Malheur | 97918 |