| City | County | 2026 Pop. ↓ |
|---|---|---|
| Lake Oswego | Clackamas County | 39,495 |
| Lebanon | Linn County | 20,621 |
| La Grande | Union County | 12,970 |
| Lincoln City | Lincoln County | 10,162 |
| Lafayette | Yamhill County | 4,751 |
| Lincoln Beach | Lincoln County | 2,798 |
| La Pine | Deschutes County | 2,575 |
| Lakeview | Lake County | 2,415 |
| Lakeside | Coos County | 1,852 |
| Lowell | Lane County | 1,303 |
| Lyons | Linn County | 1,228 |
| Lookingglass | Douglas County | 1,026 |
| Lacomb | Linn County | 878 |
| Langlois | Curry County | 316 |
| Lostine | Wallowa County | 249 |
| Lexington | Morrow County | 229 |
| Labish Village | Marion County | 198 |
| Long Creek | Grant County | 164 |
| Lonerock | Gilliam County | 24 |