| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Jackson | city | Idaho | United States | 42.63389 | -113.56972 | 4156 | 1460 |
| Jacques | city | Idaho | United States | 46.37167 | -116.72639 | 1417 | 396 |
| James Place | city | Idaho | United States | 42.27694 | -115.77917 | 5006 | 19 |
| Jamestown historical | city | Idaho | United States | 46.99694 | -117.0325 | 2700 | 377 |
| Jaype | city | Idaho | United States | 46.53028 | -115.82889 | 3362 | 61 |
| Jenkins Will | city | Idaho | United States | 44.07667 | -111.95972 | 5515 | 19 |
| Jenness | city | Idaho | United States | 43.83222 | -116.62417 | 2598 | 2882 |
| Jensen | city | Idaho | United States | 43.74278 | -111.74639 | 5200 | 1356 |
| Jerome | city | Idaho | United States | 42.72417 | -114.51778 | 3779 | 7701 |
| Jim Moore Place | city | Idaho | United States | 45.48639 | -115.33833 | 3198 | 14 |
| Joel | city | Idaho | United States | 46.71056 | -116.87694 | 2723 | 6973 |
| Johnson | city | Idaho | United States | 46.57278 | -116.08528 | 3198 | 61 |
| Johnson | city | Idaho | United States | 46.42694 | -115.91556 | 3188 | 61 |
| Johnsons Mill | city | Idaho | United States | 46.42722 | -115.91722 | 3188 | 61 |
| Jolley | city | Idaho | United States | 43.84222 | -111.77722 | 4891 | 10394 |
| Jonathan | city | Idaho | United States | 44.2675 | -117.0525 | 2119 | 351 |
| Jones Crossing | city | Idaho | United States | 44.08694 | -112.21861 | 4901 | 38 |
| Joseph | city | Idaho | United States | 46.44778 | -116.82583 | 879 | 432 |
| Joseph | city | Idaho | United States | 45.79722 | -116.47694 | 4393 | 200 |
| Josephson | city | Idaho | United States | 43.74889 | -116.6375 | 2470 | 6403 |
| Judge Town | city | Idaho | United States | 46.47556 | -115.79611 | 3198 | 61 |
| Judkins | city | Idaho | United States | 43.92194 | -111.14889 | 6092 | 471 |
| Juliaetta | city | Idaho | United States | 46.57889 | -116.705 | 1200 | 404 |
| Junction | city | Idaho | United States | 44.70083 | -113.36972 | 5974 | 47 |
| Juniper | city | Idaho | United States | 42.15333 | -112.96917 | 4999 | 120 |
|
|