| Gooseprairie Post Office (historical) | Yakima, WA | 63.5 miles | NW |
| Two Rivers Post Office (historical) | Walla Walla, WA | 68.6 miles | SE |
| Stokes Post Office (historical) | Morrow, OR | 70.2 miles | SE |
| Irrigon Post Office | Morrow, OR | 70.2 miles | SE |
| Coyote Post Office (historical) | Morrow, OR | 71 miles | SE |
| Castle Rock Post Office (historical) | Morrow, OR | 71.1 miles | SE |
| Umatilla Post Office | Umatilla, OR | 71.2 miles | SE |
| Boardman Post Office | Morrow, OR | 71.7 miles | SE |
| McNary Post Office | Umatilla, OR | 72.1 miles | SE |
| Willows Post Office (historical) | Gilliam, OR | 75 miles | SW |
| Hawthorne Post Office (historical) | Umatilla, OR | 75.6 miles | SE |
| Juniper Post Office (historical) | Umatilla, OR | 75.8 miles | SE |
| Hermiston Post Office | Umatilla, OR | 77.1 miles | SE |
| Ordnance Post Office (historical) | Umatilla, OR | 77.3 miles | SE |
| Westland Post Office (historical) | Umatilla, OR | 78.1 miles | SE |
| Arlington Post Office | Gilliam, OR | 80.5 miles | SW |
| North Post Office (historical) | Umatilla, OR | 80.6 miles | SE |
| Moorhouse Post Office (historical) | Umatilla, OR | 81 miles | SE |
| Sunrise Lodge Post Office (historical) | Pierce, WA | 81.2 miles | NW |
| Hilton Post Office (historical) | Umatilla, OR | 81.2 miles | SE |
| Meadowville Post Office (historical) | Umatilla, OR | 82.3 miles | SE |
| Stanfield Post Office | Umatilla, OR | 82.3 miles | SE |
| Meadows Post Office (historical) | Umatilla, OR | 82.4 miles | SE |
| Holdman Post Office (historical) | Umatilla, OR | 83.5 miles | SE |
| Blalock Post Office (historical) | Gilliam, OR | 83.8 miles | SW |
| Echo Post Office | Umatilla, OR | 85.2 miles | SE |
| Ella Post Office (historical) | Morrow, OR | 85.5 miles | SE |
| Vansycle Post Office (historical) | Umatilla, OR | 85.5 miles | SE |
| Quinook Post Office (historical) | Gilliam, OR | 85.7 miles | SW |
| Quinton Post Office (historical) | Gilliam, OR | 85.7 miles | SW |
| Shutler Post Office (historical) | Gilliam, OR | 86 miles | SW |
| Montague Post Office (historical) | Gilliam, OR | 86.1 miles | SW |
| Cecil Post Office (historical) | Morrow, OR | 86.3 miles | SW |
| Baird Post Office (historical) | Gilliam, OR | 86.8 miles | SW |
| Early Post Office (historical) | Sherman, OR | 86.8 miles | SW |
| Sepanek Post Office (historical) | Morrow, OR | 88.5 miles | SE |
| Alpine Post Office (historical) | Morrow, OR | 88.5 miles | SE |
| Atwood Post Office (historical) | Morrow, OR | 89.3 miles | SE |
| Longmire Post Office (historical) | Pierce, WA | 89.7 miles | SW |
| Rufus Post Office | Sherman, OR | 89.8 miles | SW |
| Oasis Post Office (historical) | Gilliam, OR | 90.3 miles | SW |
| Biglow Post Office (historical) | Sherman, OR | 90.4 miles | SW |
| Morgan Post Office (historical) | Morrow, OR | 90.8 miles | SE |
| Nolin Post Office (historical) | Umatilla, OR | 90.8 miles | SE |
| Acton Post Office (historical) | Morrow, OR | 90.9 miles | SE |
| Rockcreek Post Office (historical) | Gilliam, OR | 91.2 miles | SW |
| Emigrant Springs Post Office (historical) | Sherman, OR | 91.2 miles | SW |
| Strawberry Post Office (historical) | Morrow, OR | 91.2 miles | SE |
| Croy Post Office (historical) | Sherman, OR | 91.3 miles | SW |
| Villard Post Office (historical) | Sherman, OR | 91.3 miles | SW |
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