North Illinois Cities

City
Rank
County
2026 Pop. ↓
Rockford1Winnebago County146,961
Peoria2Peoria County110,431
Bloomington3McLean County78,861
Normal4McLean County53,329
Pekin5Tazewell County31,158
Belvidere6Boone County25,500
Loves Park7Winnebago County23,758
Machesney Park8Winnebago County22,768
East Peoria9Tazewell County21,989
Morton10Tazewell County17,660
Washington11Tazewell County15,852
Canton12Fulton County13,256
Roscoe13Winnebago County11,031
Pontiac14Livingston County10,730
Rochelle15Ogle County9,504
South Beloit16Winnebago County7,993
Rockton17Winnebago County7,864
Clinton18De Witt County6,751
Candlewick Lake19Boone County6,719
Chillicothe20Peoria County6,010
Bartonville21Peoria County5,774
Peoria Heights22Peoria County5,737
Poplar Grove23Boone County5,236
Eureka24Woodford County5,111
Creve Coeur25Tazewell County4,791
West Peoria26Peoria County4,167
Dwight27Livingston County4,001
Metamora28Woodford County3,850
Byron29Ogle County3,770
Fairbury30Livingston County3,580
Oregon31Ogle County3,557
Le Roy32McLean County3,455
Germantown Hills33Woodford County3,440
Winnebago34Winnebago County2,896
Heyworth35McLean County2,888
Cherry Valley36Winnebago County2,885
Mount Morris37Ogle County2,772
Havana38Mason County2,765
El Paso39Woodford County2,717
Davis Junction40Ogle County2,571
Marquette Heights41Tazewell County2,473
Farmington42Fulton County2,275
Henry43Marshall County2,270
Tremont44Tazewell County2,236
Polo45Ogle County2,223
Lexington46McLean County2,077
Pecatonica47Winnebago County2,045
Elmwood48Peoria County2,019
Lewistown49Fulton County1,942
Mason City50Mason County1,931
Roanoke51Woodford County1,911
Bellevue52Peoria County1,892
Minonk53Woodford County1,882
Mackinaw54Tazewell County1,843
Lacon55Marshall County1,814
Farmer City56De Witt County1,792
Lake Camelot57Peoria County1,757
Heritage Lake58Tazewell County1,751
Hudson59McLean County1,749
Princeville60Peoria County1,709
Chenoa61McLean County1,699
Rome62Peoria County1,603
Dunlap63Peoria County1,582
Westlake Village64Ogle County1,578
Twin Grove65McLean County1,552
Delavan66Tazewell County1,541
Manito67Mason County1,456
North Pekin68Tazewell County1,439
Gridley69McLean County1,423
Capron70Boone County1,412
Forreston71Ogle County1,394
Durand72Winnebago County1,378
Toluca73Marshall County1,305
Wyoming74Stark County1,280
Hanna City75Peoria County1,232
Downs76McLean County1,168
Toulon77Stark County1,166
Chatsworth78Livingston County1,149
Minier79Tazewell County1,133
Cuba80Fulton County1,119
Danvers81McLean County1,057
Stillman Valley82Ogle County1,053
Flanagan83Livingston County1,017
Forrest84Livingston County1,009
Washburn85Marshall County1,003
Colfax86McLean County969
Odell87Livingston County968
Goodfield88Woodford County964
South Pekin89Tazewell County958
Wenona90Marshall County946
Timberlane91Boone County908
Astoria92Fulton County873
Glasford93Peoria County837
New Milford94Ogle County809
Hopedale95Tazewell County802
Brimfield96Peoria County761
McLean97De Witt County730
Argyle98Boone County690
Garden Prairie99Boone County689
Avon100Fulton County665
Bradford101Stark County661
Deer Creek102Tazewell County645
Saybrook103McLean County638
Creston104Ogle County634
Green Valley105Tazewell County600
Carlock106McLean County599
Stanford107McLean County583
Vermont108Fulton County553
Congerville109Woodford County502
Cullom110Livingston County499
St. David111Fulton County499
Wapella112De Witt County494
Spring Bay113Woodford County493
San Jose114Mason County455
Trivoli115Peoria County448
Cornell116Livingston County435
Norwood117Peoria County429
Towanda118McLean County421
Leaf River119Ogle County415
Ipava120Fulton County413
Hopewell121Marshall County410
Fairview122Fulton County406
Monroe Center123Ogle County404
Benson124Woodford County401
Saunemin125Livingston County400
Waynesville126De Witt County368
Varna127Marshall County364
Weldon128De Witt County354
Sparland129Marshall County352
Bay View Gardens130Tazewell County348
London Mills131Fulton County340
Secor132Woodford County334
Bellflower133McLean County330
Table Grove134Fulton County325
Armington135Tazewell County301
Kenney136De Witt County296
Easton137Mason County294
Arrowsmith138McLean County267
Lawrence139Boone County262
Bath140Mason County259
Mossville141Peoria County258
Kingston Mines142Peoria County257
Kilbourne143Mason County253
Dunfermline144Fulton County249
Mapleton145Peoria County249
Chemung146Boone County238
Kappa147McLean County230
Lowpoint148Woodford County226
Holcomb149Ogle County215
Forest City150Mason County209
Long Point151Livingston County196
Caledonia152Boone County182
Smithfield153Fulton County180
Ellsworth154McLean County178
Lane155De Witt County178
Bryant156Fulton County167
Norris157Fulton County167
Banner158Fulton County165
De Witt159De Witt County160
La Fayette160Stark County156
Anchor161McLean County154
Cooksville162McLean County152
Campus163Livingston County142
Baileyville164Ogle County118
La Rose165Marshall County102
Goofy Ridge166Mason County101
Strawn167Livingston County101
Emington168Livingston County96
Marietta169Fulton County96
Shirley170McLean County90
Liverpool171Fulton County88
Ellisville172Fulton County84
Adeline173Ogle County71
Smithville174Peoria County60
Topeka175Mason County49
Panola176McLean County43

About North Illinois

Sources

  1. US Census: 2025 Gazetteer Files
  2. City and Town Population Totals: 2020-2024