| Adams Post Office |
230 Old Hwy 11, Adams, OR 97810 |
| Athena Post Office |
345 E Main St, Athena, OR 97813 |
| Echo Post Office |
130 W Main, Echo, OR 97826 |
| Helix Post Office |
209 Concord St, Helix, OR 97835 |
| Hermiston Post Office |
375 W Orchard Ave, Hermiston, OR 97838 |
| Milton Freewater Post Office |
109 W Broadway Ave, Milton Freewater, OR 97862 |
| Pilot Rock Post Office |
103 Nw Alder Pl, Pilot Rock, OR 97868 |
| Stanfield Post Office |
420 S Main St, Stanfield, OR 97875 |
| Ukiah Post Office |
105 E Main St, Ukiah, OR 97880 |
| Umatilla Post Office |
1900 6th St, Umatilla, OR 97882 |
| Weston Post Office |
204 E Main St, Weston, OR 97886 |
| Dale Post Office |
48388 Hwy 395 N, Ukiah, OR 97880 |
| Pendleton Post Office |
104 Sw Dorion Ave, Pendleton, OR 97801 |
