| Idaho State Locator Citys, Towns, Villages, and Other beginning withthe letter I |
| CITY/TOWN/VILLAGE/ETC. | LOCATED IN | COUNTY |
| Idaho City | Idaho City | Boise |
| Idaho Falls | Idaho Falls West | Bonneville |
| Idahome | Albion | Cassia |
| Idmon | East Clark | Clark |
| Index Mine | Glenns Ferry | Elmore |
| Indian Springs | American Falls | Power |
| Indian Valley | Council | Adams |
| Inkom | Inkom | Bannock |
| Iona | Ammon-Iona | Bonneville |
| Ireland Springs | Malad | Oneida |
| Irwin | Swan Valley | Bonneville |
| Island | Oakley | Cassia |
| Island Park | Island Park | Freemont |
| Island Park Siding | Island Park | Freemont |