There are 19 cities in Illinois that start with the letter I.
City | 2024 Pop. |
|---|---|
| Illinois City | 43 |
| Illiopolis | 826 |
| Ina | 1,654 |
| Indian Creek | 524 |
| Indian Head Park | 3,848 |
| Indianola | 218 |
| Industry | 388 |
| Ingalls Park | 3,067 |
| Inverness | 7,208 |
| Iola | 96 |
| Ipava | 422 |
| Iroquois | 128 |
| Irving | 362 |
| Irvington | 566 |
| Irwin | 66 |
| Island Lake | 7,978 |
| Itasca | 9,287 |
| Iuka | 489 |
| Ivesdale | 251 |