| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Idaville | city | Indiana | United States | 40.75694 | -86.64944 | 702 | 2155 |
| Idlewold | city | Indiana | United States | 39.98611 | -85.75278 | 885 | 10893 |
| Ijamsville | city | Indiana | United States | 40.95972 | -85.83278 | 744 | 5874 |
| Ilene | city | Indiana | United States | 38.9375 | -87.1125 | 479 | 1401 |
| Illinoi | city | Indiana | United States | 41.18972 | -87.52611 | 629 | 3107 |
| Imperial Hills | city | Indiana | United States | 39.63167 | -86.14167 | 751 | 90697 |
| Independence | city | Indiana | United States | 40.3375 | -87.16889 | 521 | 1736 |
| Independence Hill | city | Indiana | United States | 41.47611 | -87.36722 | 675 | 56151 |
| Indian Creek Estates | city | Indiana | United States | 39.67861 | -85.97083 | 793 | 13946 |
| Indian Creek Settlement | city | Indiana | United States | 38.72917 | -87.34556 | 479 | 2953 |
| Indian Heights | city | Indiana | United States | 40.42722 | -86.12556 | 843 | 46267 |
| Indian Hill | city | Indiana | United States | 41.32528 | -86.68333 | 682 | 3407 |
| Indian Hills | city | Indiana | United States | 41.62222 | -85.15583 | 984 | 3212 |
| Indian Lake | city | Indiana | United States | 39.88528 | -85.98694 | 800 | 45899 |
| Indian Springs | city | Indiana | United States | 38.79639 | -86.765 | 469 | 623 |
| Indian Village | city | Indiana | United States | 40.46639 | -86.90083 | 613 | 56397 |
| Indian Village | city | Indiana | United States | 41.71389 | -86.23556 | 715 | 86142 |
| Indian Village | city | Indiana | United States | 41.36583 | -85.63944 | 895 | 5421 |
| Indian Village | city | Indiana | United States | 41.04833 | -85.1725 | 744 | 79292 |
| Indiana Beach | city | Indiana | United States | 40.79139 | -86.76806 | 646 | 8678 |
| Indiana Harbor | city | Indiana | United States | 41.64056 | -87.44528 | 587 | 66492 |
| Indianapolis | city | Indiana | United States | 39.76833 | -86.15806 | 728 | 196655 |
| Indianola | city | Indiana | United States | 41.56472 | -85.24694 | 948 | 3647 |
| Ingalls | city | Indiana | United States | 39.95694 | -85.80528 | 853 | 7709 |
| Ingallston | city | Indiana | United States | 39.725 | -86.08472 | 836 | 150328 |
| Inglefield | city | Indiana | United States | 38.10806 | -87.55889 | 482 | 9364 |
| Inverness | city | Indiana | United States | 41.70056 | -85.09361 | 997 | 3918 |
| Inwood | city | Indiana | United States | 41.3175 | -86.20306 | 836 | 2659 |
| Iona | city | Indiana | United States | 38.54861 | -87.47167 | 429 | 1679 |
| Ireland | city | Indiana | United States | 38.41472 | -86.99944 | 449 | 9729 |
| Irondale | city | Indiana | United States | 40.09861 | -85.6575 | 846 | 52946 |
| Ironton | city | Indiana | United States | 38.66222 | -86.77528 | 649 | 1230 |
| Irvington | city | Indiana | United States | 39.77083 | -86.075 | 853 | 140723 |
| Irvington | city | Indiana | United States | 40.17639 | -85.34667 | 961 | 55467 |
| Irvington historical | city | Indiana | United States | 39.765 | -86.06111 | 856 | 140723 |
| Island City | city | Indiana | United States | 39.00917 | -87.14778 | 518 | 7006 |
| Island Park | city | Indiana | United States | 41.28694 | -85.80028 | 846 | 17216 |
| Island Park | city | Indiana | United States | 41.54083 | -84.92111 | 898 | 2651 |
| Iva | city | Indiana | United States | 38.50278 | -87.11944 | 498 | 1638 |
| Ivanhoe | city | Indiana | United States | 41.59778 | -87.42444 | 587 | 114150 |
| Ivanhoe | city | Indiana | United States | 39.7675 | -86.01278 | 853 | 86822 |
| Ivy Hills | city | Indiana | United States | 39.89972 | -86.07333 | 813 | 94144 |
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