| Rank | City | 2008 Population (Est.) | Growth Rate (Annual) |
|---|---|---|---|
| 1 | Chicago | 2,811,035 | -0.4% |
| 2 | Aurora | 169,010 | 2.3% |
| 3 | Rockford | 156,400 | 0.4% |
| 4 | Joliet | 143,158 | 4.1% |
| 5 | Naperville | 141,310 | 1.3% |
| 6 | Springfield | 117,090 | 0.6% |
| 7 | Peoria | 113,726 | 0.1% |
| 8 | Elgin | 102,981 | 1.2% |
| 9 | Waukegan | 90,103 | 0.3% |
| 10 | Cicero | 80,018 | -0.9% |
| 11 | Champaign | 78,733 | 1.6% |
| 12 | Decatur | 76,700 | -0.9% |
| 13 | Evanston | 76,562 | 0.5% |
| 14 | Arlington Heights | 72,704 | -0.7% |
| 15 | Bloomington | 72,498 | 1.4% |
| 16 | Schaumburg | 71,142 | -0.8% |
| 17 | Bolingbrook | 70,390 | 3.1% |
| 18 | Skokie | 66,618 | 0.7% |
| 19 | Palatine | 66,374 | 0.0% |
| 20 | Tinley Park | 58,936 | 2.6% |
| 21 | Des Plaines | 56,298 | -0.2% |
| 22 | Orland Park | 54,884 | 0.9% |
| 23 | Wheaton | 54,155 | -0.4% |
| 24 | Oak Park | 53,114 | 0.2% |
| 25 | Hoffman Estates | 53,105 | 1.0% |
| 26 | Mount Prospect | 53,013 | -0.8% |
| 27 | Oak Lawn | 52,713 | -0.7% |
| 28 | Normal | 51,408 | 1.7% |
| 29 | Berwyn | 49,755 | -1.2% |
| 30 | Downers Grove | 48,630 | -0.3% |
| 31 | Elmhurst | 45,733 | 0.9% |
| 32 | Glenview | 45,691 | 0.8% |
| 33 | DeKalb | 45,253 | 2.1% |
| 34 | Moline | 42,880 | -0.4% |
| 35 | Buffalo Grove | 42,607 | -0.2% |
| 36 | Lombard | 42,402 | -0.1% |
| 37 | Crystal Lake | 41,463 | 1.1% |
| 38 | Belleville | 41,100 | -0.4% |
| 39 | Bartlett | 40,860 | 1.5% |
| 40 | Quincy | 39,829 | -0.3% |
| 41 | Carol Stream | 39,452 | -0.4% |
| 42 | Urbana | 39,225 | 0.5% |
| 43 | Rock Island | 38,352 | -0.5% |
| 44 | Romeoville | 37,860 | 8.0% |
| 45 | Carpentersville | 37,019 | 2.5% |
| 46 | Streamwood | 36,776 | 0.1% |
| 47 | Addison | 36,647 | 0.1% |
| 48 | Calumet City | 36,609 | -0.9% |
| 49 | Hanover Park | 36,549 | -0.7% |
| 50 | Park Ridge | 36,388 | -0.5% |
| 51 | Wheeling | 35,651 | -0.2% |
| 52 | Plainfield | 35,177 | 14.4% |
| 53 | Woodridge | 33,884 | 1.2% |
| 54 | Northbrook | 33,569 | 0.0% |
| 55 | Pekin | 33,308 | -0.3% |
| 56 | Elk Grove Village | 33,092 | -0.7% |
| 57 | Danville | 32,848 | -0.7% |
| 58 | St. Charles | 32,761 | 2.1% |
| 59 | North Chicago | 32,470 | -1.5% |
| 60 | Mundelein | 32,299 | 0.5% |
| 61 | Glendale Heights | 31,714 | -0.1% |
| 62 | Galesburg | 31,282 | -1.1% |
| 63 | Highland Park | 31,106 | 0.4% |
| 64 | Granite City | 30,665 | -0.6% |
| 65 | Chicago Heights | 30,435 | -1.0% |
| 66 | Gurnee | 30,229 | 0.6% |
| 67 | Algonquin | 30,221 | 3.8% |
| 68 | Lake in the Hills | 29,567 | 3.0% |
| 69 | Alton | 29,416 | -0.5% |
| 70 | East St. Louis | 28,914 | -1.2% |
| 71 | Niles | 28,481 | -0.8% |
| 72 | Harvey | 27,915 | -1.0% |
| 73 | Oswego | 27,687 | 10.3% |
| 74 | Round Lake Beach | 27,624 | 0.8% |
| 75 | Oak Forest | 27,620 | -0.3% |
| 76 | Burbank | 27,248 | -0.3% |
| 77 | O'Fallon | 27,044 | 2.8% |
| 78 | Glen Ellyn | 26,976 | -0.1% |
| 79 | Batavia | 26,942 | 1.4% |
| 80 | Kankakee | 26,656 | -0.5% |
| 81 | Lansing | 26,499 | -0.9% |
| 82 | West Chicago | 26,309 | 1.4% |
| 83 | McHenry | 26,299 | 2.7% |
| 84 | Wilmette | 26,236 | -0.7% |
| 85 | Belvidere | 26,049 | 3.0% |
| 86 | Homer Glen | 25,948 | 2.1% |
| 87 | Collinsville | 25,921 | 0.5% |
| 88 | Carbondale | 25,735 | -0.3% |
| 89 | Maywood | 24,950 | -1.1% |
| 90 | Freeport | 24,853 | -0.9% |
| 91 | Zion | 24,823 | 1.1% |
| 92 | Westmont | 24,804 | -0.1% |
| 93 | Edwardsville | 24,337 | 1.2% |
| 94 | Lockport | 24,172 | 6.4% |
| 95 | Loves Park | 24,112 | 2.5% |
| 96 | Elmwood Park | 23,834 | -0.9% |
| 97 | Geneva | 23,815 | 2.7% |
| 98 | Vernon Hills | 23,801 | 2.2% |
| 99 | New Lenox | 23,760 | 3.7% |
| 100 | Dolton | 23,722 | -1.1% |
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