Towns
| State | City/Town | Town Title |
|---|---|---|
| Idaho | Idaho Falls | Idaho Falls, ID |
| Idaho | Indian Valley | Indian Valley, ID |
| Idaho | Inkom | Inkom, ID |
| Idaho | Iona | Iona, ID |
| Idaho | Irwin | Irwin, ID |
| Idaho | Island Park | Island Park, ID |
| Idaho | Jerome | Jerome, ID |
| Idaho | Joseph | Joseph, ID |
| Idaho | Juliaetta | Juliaetta, ID |
| Idaho | Kamiah | Kamiah, ID |
| Idaho | Kellogg | Kellogg, ID |
| Idaho | Kendrick | Kendrick, ID |
| Idaho | Ketchum | Ketchum, ID |
| Idaho | Kimberly | Kimberly, ID |
| Idaho | King Hill | King Hill, ID |
| Idaho | Kingston | Kingston, ID |
| Idaho | Kooskia | Kooskia, ID |
| Idaho | Kootenai | Kootenai, ID |
| Idaho | Kuna | Kuna, ID |
| Idaho | Laclede | Laclede, ID |
| Idaho | Lake Fork | Lake Fork, ID |
| Idaho | Lapwai | Lapwai, ID |
| Idaho | Lava Hot Springs | Lava Hot Springs, ID |
| Idaho | Leadore | Leadore, ID |
| Idaho | Lemhi | Lemhi, ID |