Illinois, United States
30 cities in the directory.
| City | Region | Population | Data |
|---|---|---|---|
| Chicago | Illinois | 2,664,452 | Climate |
| Aurora | Illinois | 200,661 | |
| Rockford | Illinois | 148,278 | |
| Joliet | Illinois | 147,861 | |
| Naperville | Illinois | 147,100 | |
| Peoria | Illinois | 115,070 | |
| Springfield | Illinois | 114,394 | |
| North Peoria | Illinois | 113,004 | |
| Elgin | Illinois | 112,111 | |
| Waukegan | Illinois | 88,475 | |
| Champaign | Illinois | 86,096 | |
| Cicero | Illinois | 83,886 | |
| Bloomington | Illinois | 78,292 | |
| Arlington Heights | Illinois | 75,926 | |
| Evanston | Illinois | 75,527 | |
| Schaumburg | Illinois | 74,693 | |
| Bolingbrook | Illinois | 74,306 | |
| Decatur | Illinois | 73,254 | |
| Palatine | Illinois | 69,308 | |
| Skokie | Illinois | 64,821 | |
| Des Plaines | Illinois | 58,677 | |
| Orland Park | Illinois | 58,619 | |
| Tinley Park | Illinois | 57,143 | |
| Oak Lawn | Illinois | 56,781 | |
| Berwyn | Illinois | 56,368 | |
| Mount Prospect | Illinois | 54,747 | |
| Normal | Illinois | 54,373 | |
| Wheaton | Illinois | 53,715 | |
| Oak Park | Illinois | 52,287 | |
| Hoffman Estates | Illinois | 52,138 |