| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| IXL | city | Oklahoma | United States | 35.52 | -96.39 | 898 | |
| Iconium | city | Oklahoma | United States | 35.87 | -97.19 | 1082 | |
| Idabel | city | Oklahoma | United States | 33.90 | -94.83 | 830 | |
| Imo | city | Oklahoma | United States | 36.35 | -97.98 | 1243 | |
| Independence | city | Oklahoma | United States | 35.73 | -98.93 | 1797 | |
| Independence | city | Oklahoma | United States | 34.88 | -94.68 | 830 | |
| Indiahoma | city | Oklahoma | United States | 34.62 | -98.75 | 1669 | |
| Indiahoma Wye | city | Oklahoma | United States | 34.70 | -98.71 | 1669 | |
| Indian City | city | Oklahoma | United States | 35.04 | -98.23 | 1669 | |
| Indian Meadows | city | Oklahoma | United States | 35.87 | -94.97 | 830 | |
| Indian Springs | city | Oklahoma | United States | 35.90 | -97.57 | 987 | |
| Indian Village | city | Oklahoma | United States | 36.41 | -96.39 | 830 | |
| Indian Village (historical) | city | Oklahoma | United States | 35.20 | -98.81 | 1669 | |
| Indianapolis | city | Oklahoma | United States | 35.55 | -98.86 | 1696 | |
| Indianola | city | Oklahoma | United States | 35.16 | -95.77 | 830 | |
| Indogco | city | Oklahoma | United States | 35.18 | -96.57 | 885 | |
| Ingalls | city | Oklahoma | United States | 36.10 | -96.88 | 898 | |
| Ingersoll | city | Oklahoma | United States | 36.80 | -98.39 | 1200 | |
| Ingram | city | Oklahoma | United States | 35.71 | -97.09 | 849 | |
| Inola | city | Oklahoma | United States | 36.15 | -95.51 | 830 | |
| Ioland (historical) | city | Oklahoma | United States | 35.94 | -99.52 | 1912 | |
| Iona | city | Oklahoma | United States | 34.62 | -97.03 | 1059 | |
| Iron Post | city | Oklahoma | United States | 35.73 | -96.41 | 885 | |
| Iron Post | city | Oklahoma | United States | 36.16 | -95.14 | 830 | |
| Iron Stob Corner | city | Oklahoma | United States | 33.90 | -94.95 | 380 | |
| Ironbridge | city | Oklahoma | United States | 35.24 | -94.96 | 830 | |
| Irving | city | Oklahoma | United States | 34.04 | -98.05 | 915 | |
| Isabella | city | Oklahoma | United States | 36.24 | -98.34 | 1253 | |
| Ituna | city | Oklahoma | United States | 36.48 | -97.97 | 1669 |