UpAlphabetical listing of Places in Idaho
| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
| Jackson | city | Idaho | United States | 42.63 | -113.57 | 4189 | |
| Jacques | city | Idaho | United States | 46.37 | -116.73 | 1669 | |
| James Place | city | Idaho | United States | 42.28 | -115.78 | 5029 | |
| Jamestown (historical) | city | Idaho | United States | 47.00 | -117.03 | 2700 | |
| Jaype | city | Idaho | United States | 46.53 | -115.83 | 3349 | |
| Jenkins Will | city | Idaho | United States | 44.08 | -111.96 | 5869 | |
| Jenness | city | Idaho | United States | 43.83 | -116.63 | 2598 | |
| Jensen | city | Idaho | United States | 43.74 | -111.75 | 5200 | |
| Jerome | city | Idaho | United States | 42.72 | -114.52 | 4189 | |
| Jim Moore Place | city | Idaho | United States | 45.49 | -115.34 | 3349 | |
| Joel | city | Idaho | United States | 46.71 | -116.88 | 2723 | |
| Johnson | city | Idaho | United States | 46.43 | -115.92 | 3349 | |
| Johnson | city | Idaho | United States | 46.57 | -116.09 | 3349 | |
| Johnsons Mill | city | Idaho | United States | 46.43 | -115.92 | 3349 | |
| Jolley | city | Idaho | United States | 43.84 | -111.78 | 5029 | |
| Jonathan | city | Idaho | United States | 44.27 | -117.05 | 2509 | |
| Jones Crossing | city | Idaho | United States | 44.09 | -112.22 | 5029 | |
| Joseph | city | Idaho | United States | 45.80 | -116.48 | 4393 | |
| Joseph | city | Idaho | United States | 46.45 | -116.83 | 879 | |
| Josephson | city | Idaho | United States | 43.75 | -116.64 | 2509 | |
| Judge Town | city | Idaho | United States | 46.48 | -115.80 | 3349 | |
| Judkins | city | Idaho | United States | 43.92 | -111.15 | 6092 | |
| Juliaetta | city | Idaho | United States | 46.58 | -116.71 | 1200 | |
| Junction | city | Idaho | United States | 44.70 | -113.37 | 5974 | |
| Juniper | city | Idaho | United States | 42.15 | -112.97 | 5029 | |
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