| Locality | Post Code |
|---|---|
| Billingsville, Union | 47353 |
| Brownsville, Union | 47325 |
| Cottagegrove, Union | 47353 |
| Dunlapsville, Union | 47353 |
| Liberty, Union | 47353 |
| Lotus, Union | 47353 |
| Philomath, Union | 47325 |
| Roseburg, Union | 47353 |
| Springersville, Union | 47325 |
| Treaty Line Museum, Union | 47353 |
| West College Corner, Union | 47003 |