Illinois cities which start with the letter I.
| Place | Place Type | 2010 Population |
|---|---|---|
| I L Central College | ||
| Idlewood | ||
| Il Dept Reg And Educ | ||
| Il Mutual Life & Casualty | ||
| Ill Dept Human Services | ||
| Ill Dept Ins | ||
| Ill Dept Public Health | ||
| Ill Dept Revenue | ||
| Ill Office Educ | ||
| Ill R O Tax Div | ||
| Ill Secy State | ||
| Illinois City | ||
| Illinois State University | ||
| Illiopolis | village | 891 |
| Imbs | ||
| Ina | village | 2338 |
| Ind Head Park | ||
| Ind Head Pk | ||
| Indian Creek | township | 2322 |
| Indian Head Park | village | 3809 |
| Indian Head Pk | ||
| Indianhead Park | ||
| Indianhead Pk | ||
| Indianola | village | 276 |
| Industry | village | 478 |
| Ingleside | ||
| Ingraham | ||
| Inktel Marketing | ||
| Internal Revenue Service | ||
| Inverness | village | 5711 |
| Inverness | village | 5711 |
| Iola | village | 141 |
| Ipava | village | 470 |
| Irene | ||
| Irishtown | township | 1167 |
| Iroquois | township | 625 |
| Irving | village | 495 |
| Irvington | village | 659 |
| Island Grove | township | 621 |
| Island Lake | village | 4761 |
| Itasca | village | 1697 |
| Iuka | village | 489 |
| Ivesdale | village | 0 |
Browse IL Cities by Letter
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