Towns
| State | City/Town | Town Title |
|---|---|---|
| Oregon | Ione | Ione, OR |
| Oregon | Ironside | Ironside, OR |
| Oregon | Irrigon | Irrigon, OR |
| Oregon | Jacksonville | Jacksonville, OR |
| Oregon | Jamieson | Jamieson, OR |
| Oregon | Jefferson | Jefferson, OR |
| Oregon | John Day | John Day, OR |
| Oregon | Jordan Valley | Jordan Valley, OR |
| Oregon | Joseph | Joseph, OR |
| Oregon | Junction City | Junction City, OR |
| Oregon | Juntura | Juntura, OR |
| Oregon | Keizer | Keizer, OR |
| Oregon | Keno | Keno, OR |
| Oregon | Kent | Kent, OR |
| Oregon | Kerby | Kerby, OR |
| Oregon | Kimberly | Kimberly, OR |
| Oregon | Klamath Falls | Klamath Falls, OR |
| Oregon | La Grande | La Grande, OR |
| Oregon | La Pine | La Pine, OR |
| Oregon | Lafayette | Lafayette, OR |
| Oregon | Lake Oswego | Lake Oswego, OR |
| Oregon | Lakeside | Lakeside, OR |
| Oregon | Lakeview | Lakeview, OR |
| Oregon | Langlois | Langlois, OR |
| Oregon | Lebanon | Lebanon, OR |