| # | Name | Rank | Elevation | Prominence | Counties | Quadrangle |
| 1 | Sylvania, Mount | 4988 | 975' | 520' | Multnomah | Lake Oswego |
| 2 | Cooper Mountain | 5071 | 783' | 598' | Washington | Beaverton |
| 3 | Talbert, Mount | 5081 | 745' | 422' | Clackamas | Gladstone |
| 4 | Cooks Butte | 718' | 273' | Clackamas | Lake Oswego | |
| 5 | Bull Mountain | 5095 | 715' | 430' | Washington | Beaverton |
| 6 | Grant Butte | 5110 | 658' | 393' | Multnomah | Camas |
| 7 | Tabor, Mount | 5114 | 645' | 400' | Multnomah | Mount Tabor |
| 8 | Powell Butte | 5117 | 625' | 350' | Multnomah | Gladstone |
| 9 | Rocky Butte | 5119 | 612' | 413' | Multnomah | Mount Tabor |
| 10 | Coxcomb Hill | 595' | 170' | Clatsop | Astoria | |
| 11 | Kelly Butte | 5124 | 593' | 328' | Multnomah | Gladstone |
| 12 | La Butte | 5146 | 435' | 300' | Marion | Sherwood |