Towns
| State | City/Town | Town Title |
|---|---|---|
| Oregon | North Powder | North Powder, OR |
| Oregon | Noti | Noti, OR |
| Oregon | Nyssa | Nyssa, OR |
| Oregon | O Brien | O Brien, OR |
| Oregon | Oakland | Oakland, OR |
| Oregon | Oakridge | Oakridge, OR |
| Oregon | Oceanside | Oceanside, OR |
| Oregon | Odell | Odell, OR |
| Oregon | Ontario | Ontario, OR |
| Oregon | Ophir | Ophir, OR |
| Oregon | Oregon City | Oregon City, OR |
| Oregon | Otis | Otis, OR |
| Oregon | Otter Rock | Otter Rock, OR |
| Oregon | Oxbow | Oxbow, OR |
| Oregon | Pacific City | Pacific City, OR |
| Oregon | Paisley | Paisley, OR |
| Oregon | Paulina | Paulina, OR |
| Oregon | Pendleton | Pendleton, OR |
| Oregon | Philomath | Philomath, OR |
| Oregon | Phoenix | Phoenix, OR |
| Oregon | Pilot Rock | Pilot Rock, OR |
| Oregon | Pleasant Hill | Pleasant Hill, OR |
| Oregon | Plush | Plush, OR |
| Oregon | Port Orford | Port Orford, OR |
| Oregon | Portland | Portland, OR |