| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Jacksonville | city | Oregon | United States | 42.31 | -122.97 | 1669 | |
| Jamieson | city | Oregon | United States | 44.18 | -117.44 | 2598 | |
| Jasper | city | Oregon | United States | 44.00 | -122.91 | 830 | |
| Jawbone Flats (historical) | city | Oregon | United States | 44.85 | -122.21 | 2509 | |
| Jean | city | Oregon | United States | 45.40 | -122.74 | 200 | |
| Jeffers Garden | city | Oregon | United States | 46.15 | -123.86 | 39 | |
| Jefferson | city | Oregon | United States | 44.72 | -123.01 | 252 | |
| Jennings Lodge | city | Oregon | United States | 45.39 | -122.61 | 200 | |
| Jerrys Flat (historical) | city | Oregon | United States | 42.45 | -124.37 | 183 | |
| Jett (historical) | city | Oregon | United States | 44.43 | -117.31 | 2509 | |
| Jewell | city | Oregon | United States | 45.93 | -123.50 | 830 | |
| Jimtown | city | Oregon | United States | 44.91 | -117.14 | 2887 | |
| John Day | city | Oregon | United States | 44.42 | -118.95 | 3349 | |
| Johns Landing | city | Oregon | United States | 45.40 | -122.67 | 830 | |
| Johnson City | city | Oregon | United States | 45.40 | -122.58 | 200 | |
| Johnson Crossing | city | Oregon | United States | 45.73 | -122.88 | 157 | |
| Jordan | city | Oregon | United States | 44.73 | -122.70 | 830 | |
| Jordan Creek | city | Oregon | United States | 45.55 | -123.60 | 830 | |
| Jordan Valley | city | Oregon | United States | 42.97 | -117.05 | 4399 | |
| Joseph | city | Oregon | United States | 45.35 | -117.23 | 4199 | |
| Judžinas | city | Oregon | United States | 44.05 | -123.09 | 830 | |
| Junction City | city | Oregon | United States | 44.22 | -123.21 | 324 | |
| Juntura | city | Oregon | United States | 43.74 | -118.08 | 3349 |