| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Idaho City | city | Idaho | United States | 43.82861 | -115.83361 | 3999 | 145 |
| Idaho Falls | city | Idaho | United States | 43.46667 | -112.03333 | 4701 | 48233 |
| Idahome | city | Idaho | United States | 42.41556 | -113.39889 | 4409 | 70 |
| Idmon | city | Idaho | United States | 44.36083 | -111.91083 | 6299 | 19 |
| Ilo historical | city | Idaho | United States | 46.23833 | -116.49667 | 3841 | 267 |
| Independence historical | city | Idaho | United States | 43.77639 | -111.91611 | 4819 | 2529 |
| Indian Grove | city | Idaho | United States | 42.11278 | -113.7275 | 7204 | 83 |
| Indian Head Rock | city | Idaho | United States | 43.55528 | -114.80056 | 6394 | 33 |
| Indian Jim Place | city | Idaho | United States | 42.16778 | -114.91278 | 5597 | 28 |
| Indian Valley | city | Idaho | United States | 44.55722 | -116.43306 | 3054 | 112 |
| Ingard | city | Idaho | United States | 44.03361 | -116.92222 | 2198 | 11002 |
| Inkom | city | Idaho | United States | 42.79639 | -112.25333 | 4599 | 928 |
| Iona | city | Idaho | United States | 43.52639 | -111.93222 | 4780 | 15569 |
| Ireland Springs | city | Idaho | United States | 42.165 | -112.49472 | 5374 | 140 |
| Irwin | city | Idaho | United States | 43.40861 | -111.29861 | 5380 | 28 |
| Isabella Landing | city | Idaho | United States | 46.84972 | -115.62806 | 1801 | 61 |
| Island Park | city | Idaho | United States | 44.42444 | -111.37028 | 6282 | 19 |
| Iversons | city | Idaho | United States | 42.30472 | -114.01 | 4767 | 112 |
|
|