19 cities
| City | County | 2025 Pop. ↓ |
|---|---|---|
| Lake Oswego | Clackamas County | 39,814 |
| Lebanon | Linn County | 20,301 |
| La Grande | Union County | 13,071 |
| Lincoln City | Lincoln County | 10,080 |
| Lafayette | Yamhill County | 4,676 |
| Lincoln Beach | Lincoln County | 2,962 |
| La Pine | Deschutes County | 2,578 |
| Lakeview | Lake County | 2,416 |
| Lakeside | Coos County | 1,847 |
| Lowell | Lane County | 1,302 |
| Lyons | Linn County | 1,223 |
| Lookingglass | Douglas County | 739 |
| Lacomb | Linn County | 720 |
| Labish Village | Marion County | 517 |
| Langlois | Curry County | 331 |
| Lostine | Wallowa County | 247 |
| Lexington | Morrow County | 222 |
| Long Creek | Grant County | 167 |
| Lonerock | Gilliam County | 20 |