Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Tygh Valley Fairgrounds | Locale | 358 | Wasco | 45 15 15 N | 121 12 28 W |
| Tygh Valley Post Office | Post Office | 348 | Wasco | 45 14 50 N | 121 10 23 W |
| Tygh Valley School | School | 342 | Wasco | 45 14 39 N | 121 10 08 W |
| Tygh Valley Storage Dam | Dam | 340 | Wasco | 45 14 47 N | 121 11 04 W |
| Tygh Valley Storage Pond | Reservoir | 340 | Wasco | 45 14 47 N | 121 11 04 W |
| Tyler Creek | Stream | | Jackson | 42 06 55 N | 122 32 24 W |
| Tyler Draw | Valley | | Malheur | 44 18 14 N | 118 05 31 W |
| Tyler Lake | Flat | 1258 | Harney | 43 22 20 N | 119 16 59 W |
| Tyrell Spring | Spring | 1290 | Baker | 44 26 33 N | 118 07 09 W |
| Tyson Island | Cape | 47 | Marion | 44 49 38 N | 123 08 23 W |
| Tyson Park | Park | 146 | Lane | 44 03 03 N | 122 58 38 W |
| U J Hamby Park | Park | 48 | Washington | 45 32 01 N | 122 58 59 W |
| U P Water Tank (historical) | Reservoir | 750 | Jefferson | 44 39 00 N | 121 08 01 W |
| U S B Line Canal | Canal | 206 | Umatilla | 45 47 59 N | 119 14 49 W |
| Ukiah | Populated Place | 1023 | Umatilla | 45 08 03 N | 118 55 57 W |
| Ukiah Cemetery | Cemetery | 1038 | Umatilla | 45 08 31 N | 118 55 54 W |
| Ukiah Elementary and High School | School | 1039 | Umatilla | 45 08 10 N | 118 56 02 W |
| Ukiah Post Office | Post Office | 1023 | Umatilla | 45 08 03 N | 118 55 57 W |
| Ukiah Sewage Lagoon | Reservoir | 1027 | Umatilla | 45 07 54 N | 118 54 52 W |
| Ukiah Sewage Lagoon Dam | Dam | 1027 | Umatilla | 45 07 54 N | 118 54 52 W |
| Ukiah-Dale Forest State Park | Park | 1003 | Umatilla | 45 07 32 N | 118 58 18 W |
| Ulmer Mountain | Summit | 375 | Curry | 42 32 30 N | 124 21 28 W |
| Ulrich Ranch | Locale | 1048 | Jackson | 42 45 24 N | 122 34 07 W |
| Ulvstad Post Office (historical) | Post Office | 563 | Jackson | 42 46 39 N | 122 39 54 W |
| Umapine | Populated Place | 208 | Umatilla | 45 58 35 N | 118 29 47 W |
| Umapine Creek | Stream | | Umatilla | 45 08 10 N | 118 33 22 W |
| Umapine High and Elementary School | School | 206 | Umatilla | 45 58 34 N | 118 29 51 W |
| Umapine Post Office (historical) | Post Office | 208 | Umatilla | 45 58 35 N | 118 29 47 W |
| Umapine Recreation Site | Locale | 1509 | Umatilla | 45 06 42 N | 118 33 32 W |
| Umatilla | Populated Place | 98 | Umatilla | 45 55 02 N | 119 20 33 W |
| Umatilla Brakes Viewpoint | Locale | 1549 | Union | 45 44 25 N | 118 02 36 W |
| Umatilla Bridge | Bridge | 82 | Umatilla | 45 55 51 N | 119 19 42 W |
| Umatilla Butte | Summit | 189 | Umatilla | 45 53 10 N | 119 18 34 W |
| Umatilla Cemetery | Cemetery | 93 | Umatilla | 45 54 59 N | 119 20 59 W |
| Umatilla County | Civil | 1180 | Umatilla | 45 30 00 N | 118 30 05 W |
| Umatilla County Juvenile Center | Locale | 381 | Umatilla | 45 40 09 N | 118 46 20 W |
| Umatilla Creek | Stream | | Grant | 44 18 19 N | 119 10 25 W |
| Umatilla Drain | Canal | 134 | Umatilla | 45 53 59 N | 119 18 02 W |
| Umatilla Forks Recreation Site | Locale | 725 | Umatilla | 45 43 36 N | 118 11 11 W |
| Umatilla High School | School | 99 | Umatilla | 45 54 57 N | 119 20 15 W |
| Umatilla Indian Reservation | Reserve | 496 | Umatilla | 45 39 59 N | 118 33 04 W |
| Umatilla Junction (historical) | Locale | 93 | Umatilla | 45 55 10 N | 119 20 14 W |
| Umatilla Marina Park | Park | 82 | Umatilla | 45 55 30 N | 119 19 52 W |
| Umatilla Meadows | Flat | 172 | Umatilla | 45 47 02 N | 119 16 00 W |
| Umatilla National Forest | Forest | 1443 | Umatilla | 45 37 59 N | 118 11 04 W |
| Umatilla National Forest Headquarters | Building | 336 | Umatilla | 45 39 44 N | 118 48 33 W |
| Umatilla National Wildlife Refuge | Park | 85 | Morrow | 45 53 59 N | 119 36 04 W |
| Umatilla Post Office | Post Office | 98 | Umatilla | 45 55 02 N | 119 20 33 W |
| Umatilla Post Office (historical) | Post Office | 370 | Umatilla | 45 40 04 N | 118 41 57 W |
| Umatilla River | Stream | | Umatilla | 45 55 09 N | 119 21 20 W |
| Umatilla Sports Complex | Park | 933 | Deschutes | 44 15 05 N | 121 12 05 W |
| Umatilla Toll Bridge Toll Plaza (historical) | Building | 97 | Umatilla | 45 55 29 N | 119 19 31 W |
| Umbrella Falls | Falls | 1601 | Hood River | 45 19 45 N | 121 39 37 W |
| Umbrella Falls Trail | Trail | 1596 | Hood River | 45 19 40 N | 121 39 41 W |
| Umbrella Pine Reservoir | Reservoir | 1519 | Harney | 43 35 10 N | 119 15 37 W |
| Umbrite Lake | Lake | 1287 | Harney | 43 23 52 N | 119 19 23 W |
| Umli | Locale | 1454 | Klamath | 43 26 54 N | 121 57 01 W |
| Umpcoos Ridge | Ridge | 363 | Coos | 43 31 00 N | 123 52 39 W |
| Umpleby Ranch Airstrip | Airport | 1303 | Union | 45 13 26 N | 117 58 04 W |
| Umpqua | Populated Place | 98 | Douglas | 43 21 55 N | 123 28 06 W |
| Umpqua City (historical) | Populated Place | 1 | Douglas | 43 42 34 N | 124 09 54 W |
| Umpqua City Post Office (historical) | Post Office | 1 | Douglas | 43 42 34 N | 124 09 54 W |
| Umpqua Community College | School | 171 | Douglas | 43 17 23 N | 123 19 59 W |
| Umpqua Gulch | Valley | | Baker | 44 48 25 N | 118 15 39 W |
| Umpqua Hot Springs | Spring | 863 | Douglas | 43 17 42 N | 122 21 57 W |
| Umpqua Landing | Locale | 111 | Douglas | 43 21 59 N | 123 28 04 W |
| Umpqua Lighthouse | Locale | 33 | Douglas | 43 39 41 N | 124 11 54 W |
| Umpqua Lighthouse State Park | Park | 36 | Douglas | 43 39 39 N | 124 11 54 W |
| Umpqua Log Pond | Reservoir | 154 | Douglas | 43 09 39 N | 123 22 14 W |
| Umpqua Mine | Mine | 614 | Douglas | 43 01 02 N | 122 55 58 W |
| Umpqua Myrtle State Park | Park | 15 | Douglas | 43 40 24 N | 123 39 13 W |
| Umpqua National Forest | Forest | 1156 | Douglas | 43 15 00 N | 122 40 04 W |
| Umpqua National Forest Headquarters | Building | 146 | Douglas | 43 14 26 N | 123 21 44 W |
| Umpqua Park | Park | 137 | Douglas | 43 11 37 N | 123 21 24 W |
| Umpqua Post Office | Post Office | 98 | Douglas | 43 21 55 N | 123 28 06 W |
| Umpqua River | Stream | | Douglas | 43 40 09 N | 124 12 18 W |
| Umpqua River Safety Rest Area (historical) | Locale | 6 | Douglas | 43 38 59 N | 123 51 04 W |
| Umpqua Rogue Trail | Trail | 1589 | Douglas | 42 57 01 N | 122 31 52 W |
| Umpqua State Park | Park | 77 | Douglas | 43 39 04 N | 123 54 21 W |
| Unavilla Post Office (historical) | Post Office | 181 | Clackamas | 45 25 26 N | 122 15 53 W |
| Uncle Creek | Stream | | Lane | 44 04 31 N | 123 59 59 W |
| Uncle Dan Mine | Mine | 1252 | Baker | 44 44 25 N | 117 40 15 W |
| Uncle Sam Mine | Mine | 1012 | Curry | 42 16 39 N | 123 50 30 W |
| Uncle Sam Mine | Mine | 2167 | Grant | 44 50 13 N | 118 20 25 W |
| Uncle Tom Slough | Canal | 4 | Columbia | 46 07 19 N | 123 15 54 W |
| Uncle Tom Well | Well | 1271 | Harney | 43 38 02 N | 118 59 46 W |
| Underhill Recreation Site | Locale | 1078 | Wasco | 45 23 49 N | 121 25 19 W |
| Underwater Forest | Lava | 927 | Linn | 44 22 14 N | 121 59 34 W |
| Unger Dam | Dam | 59 | Washington | 45 28 05 N | 123 03 28 W |
| Unger Reservoir | Reservoir | 59 | Washington | 45 28 05 N | 123 03 28 W |
| Union | Populated Place | 850 | Union | 45 12 30 N | 117 51 55 W |
| Union (historical) | Locale | 178 | Clackamas | 45 25 14 N | 122 24 49 W |
| Union Baptist Cemetery | Cemetery | 100 | Polk | 45 03 41 N | 123 25 42 W |
| Union Bar | Bar | 29 | Marion | 45 04 39 N | 123 04 01 W |
| Union Cemetery | Cemetery | 23 | Tillamook | 45 10 46 N | 123 55 10 W |
| Union Cemetery | Cemetery | 854 | Union | 45 12 16 N | 117 51 31 W |
| Union Cemetery | Cemetery | 78 | Washington | 45 32 04 N | 122 49 35 W |
| Union City Park | Park | | Union | 45 12 38 N | 117 52 08 W |
| Union County | Civil | 824 | Union | 45 21 59 N | 118 00 05 W |
| Union Creek | Populated Place | 1013 | Jackson | 42 54 25 N | 122 26 44 W |
| Union Creek | Stream | | Baker | 44 41 16 N | 118 01 24 W |
| Union Creek | Stream | | Douglas | 42 52 00 N | 123 34 35 W |
| Union Creek | Stream | | Jackson | 42 54 41 N | 122 27 13 W |
| Union Creek (historical) | Locale | 280 | Douglas | 42 52 10 N | 123 34 32 W |
| Union Creek Post Office (historical) | Post Office | 1013 | Jackson | 42 54 25 N | 122 26 44 W |
| Union Creek Recreation Site | Locale | 1252 | Baker | 44 41 18 N | 118 01 35 W |
| Union Creek Recreation Site | Locale | 1003 | Jackson | 42 54 41 N | 122 27 03 W |
| Union Creek Resort | Locale | 1043 | Jackson | 42 54 11 N | 122 25 47 W |
| Union Creek Spring | Spring | 1898 | Klamath | 42 50 44 N | 122 13 44 W |
| Union Creek Trail | Trail | 1055 | Jackson | 42 54 51 N | 122 24 54 W |