| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Kameron | city | Idaho | United States | 46.7725 | -116.25306 | 2998 | 72 |
| Kamiah | city | Idaho | United States | 46.22722 | -116.02833 | 1200 | 915 |
| Karcher Junction | city | Idaho | United States | 43.58611 | -116.60194 | 2490 | 32233 |
| Katka | city | Idaho | United States | 48.68972 | -116.13444 | 1814 | 330 |
| Kaufman historical | city | Idaho | United States | 44.16028 | -112.91056 | 6125 | 19 |
| Keeler | city | Idaho | United States | 46.95722 | -116.30694 | 2998 | 152 |
| Keenan City | city | Idaho | United States | 43.14083 | -111.33944 | 6797 | 28 |
| Kellogg | city | Idaho | United States | 47.53833 | -116.11833 | 2598 | 2136 |
| Kelso | city | Idaho | United States | 48.01194 | -116.70556 | 2306 | 676 |
| Kelso | city | Idaho | United States | 42.06861 | -113.31306 | 4904 | 70 |
| Kendrick | city | Idaho | United States | 46.61417 | -116.64556 | 1660 | 390 |
| Kenyon | city | Idaho | United States | 42.41556 | -113.86944 | 4291 | 165 |
| Keogh | city | Idaho | United States | 42.22333 | -113.33278 | 4586 | 70 |
| Ketchum | city | Idaho | United States | 43.68083 | -114.36278 | 5859 | 741 |
| Keuterville | city | Idaho | United States | 46.03417 | -116.44056 | 4107 | 196 |
| Kilgore | city | Idaho | United States | 44.40222 | -111.89306 | 6348 | 19 |
| Kimama | city | Idaho | United States | 42.83806 | -113.79472 | 4307 | 136 |
| Kimball | city | Idaho | United States | 43.27361 | -112.21861 | 4563 | 3796 |
| Kimberly | city | Idaho | United States | 42.53389 | -114.36389 | 3910 | 4150 |
| King Hill | city | Idaho | United States | 43.00417 | -115.20306 | 2595 | 61 |
| Kings Corner | city | Idaho | United States | 43.51806 | -116.53361 | 2578 | 18684 |
| Kingston | city | Idaho | United States | 47.54917 | -116.26972 | 2398 | 922 |
| Kinney Point Summer Home Area | city | Idaho | United States | 44.63861 | -115.67361 | 5298 | 84 |
| Kinport | city | Idaho | United States | 42.75444 | -111.94083 | 5396 | 299 |
| Kippen | city | Idaho | United States | 46.31111 | -116.54861 | 3661 | 308 |
| Knowlton Heights | city | Idaho | United States | 43.54528 | -116.77194 | 2335 | 1817 |
| Knull | city | Idaho | United States | 42.52639 | -114.55444 | 3989 | 3333 |
| Konkolville | city | Idaho | United States | 46.49556 | -116.19694 | 1381 | 1174 |
| Kooskia | city | Idaho | United States | 46.145 | -115.97694 | 1597 | 536 |
| Kootenai | city | Idaho | United States | 48.31028 | -116.5125 | 2060 | 3640 |
| Kuna | city | Idaho | United States | 43.49194 | -116.41917 | 2769 | 3831 |
| Kyle historical | city | Idaho | United States | 47.32806 | -115.75667 | 3480 | 33 |
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