| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| IXL Mobile Home Park | city | Indiana | United States | 41.56 | -87.40 | 830 | |
| Idaville | city | Indiana | United States | 40.76 | -86.65 | 830 | |
| Ideal Mobile Home Court | city | Indiana | United States | 41.56 | -87.41 | 830 | |
| Idlewold | city | Indiana | United States | 39.99 | -85.75 | 885 | |
| Ijamsville | city | Indiana | United States | 40.96 | -85.83 | 830 | |
| Ilene | city | Indiana | United States | 38.94 | -87.11 | 830 | |
| Illinoi | city | Indiana | United States | 41.19 | -87.53 | 830 | |
| Imperial Hills | city | Indiana | United States | 39.63 | -86.14 | 830 | |
| Independence | city | Indiana | United States | 40.34 | -87.17 | 830 | |
| Independence Hill | city | Indiana | United States | 41.48 | -87.37 | 830 | |
| Indian Creek Estates | city | Indiana | United States | 39.68 | -85.97 | 830 | |
| Indian Creek Settlement | city | Indiana | United States | 38.73 | -87.35 | 830 | |
| Indian Heights | city | Indiana | United States | 40.43 | -86.13 | 843 | |
| Indian Hill | city | Indiana | United States | 41.33 | -86.68 | 830 | |
| Indian Hills | city | Indiana | United States | 41.62 | -85.16 | 984 | |
| Indian Lake | city | Indiana | United States | 39.89 | -85.99 | 830 | |
| Indian Springs | city | Indiana | United States | 38.80 | -86.76 | 830 | |
| Indian Village | city | Indiana | United States | 41.05 | -85.17 | 830 | |
| Indian Village | city | Indiana | United States | 41.37 | -85.64 | 895 | |
| Indian Village | city | Indiana | United States | 40.47 | -86.90 | 830 | |
| Indian Village | city | Indiana | United States | 41.71 | -86.24 | 830 | |
| Indiana Beach | city | Indiana | United States | 40.79 | -86.77 | 830 | |
| Indiana Harbor | city | Indiana | United States | 41.64 | -87.45 | 830 | |
| Indianapolis | city | Indiana | United States | 39.77 | -86.16 | 830 | |
| Indianapolisa | city | Indiana | United States | 39.77 | -86.16 | 830 | |
| Indianapolės | city | Indiana | United States | 39.77 | -86.16 | 830 | |
| Indianola | city | Indiana | United States | 41.56 | -85.25 | 948 | |
| Indigo Lake | city | Indiana | United States | 39.99 | -86.00 | 830 | |
| Indiyanapolis | city | Indiana | United States | 39.77 | -86.16 | 830 | |
| Ingalls | city | Indiana | United States | 39.96 | -85.81 | 853 | |
| Ingallston | city | Indiana | United States | 39.73 | -86.08 | 830 | |
| Inglefield | city | Indiana | United States | 38.11 | -87.56 | 830 | |
| Inverness | city | Indiana | United States | 41.70 | -85.09 | 997 | |
| Inverness Estates | city | Indiana | United States | 39.99 | -86.02 | 830 | |
| Inwood | city | Indiana | United States | 41.32 | -86.20 | 830 | |
| Iona | city | Indiana | United States | 38.55 | -87.47 | 830 | |
| Ireland | city | Indiana | United States | 38.41 | -87.00 | 830 | |
| Irondale | city | Indiana | United States | 40.10 | -85.66 | 846 | |
| Ironton | city | Indiana | United States | 38.66 | -86.78 | 830 | |
| Irvington | city | Indiana | United States | 39.77 | -86.07 | 849 | |
| Irvington | city | Indiana | United States | 40.18 | -85.35 | 961 | |
| Irvington (historical) | city | Indiana | United States | 39.77 | -86.06 | 856 | |
| Island City | city | Indiana | United States | 39.01 | -87.15 | 830 | |
| Island Park | city | Indiana | United States | 41.29 | -85.80 | 846 | |
| Island Park | city | Indiana | United States | 41.54 | -84.92 | 898 | |
| Iva | city | Indiana | United States | 38.50 | -87.12 | 830 | |
| Ivanhoe | city | Indiana | United States | 39.77 | -86.01 | 853 | |
| Ivanhoe | city | Indiana | United States | 41.60 | -87.42 | 830 | |
| Ivy Hills | city | Indiana | United States | 39.90 | -86.07 | 830 |