Counties 102

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• Lawrence County pop. 15,152
• Lee County pop. 34,049
• Livingston County pop. 35,664
• Logan County pop. 27,992
• Macon County pop. 102,432
• Macoupin County pop. 44,406
• Madison County pop. 264,490
• Marion County pop. 37,390
• Marshall County pop. 11,663
• Mason County pop. 12,881
• Massac County pop. 13,960
• Mcdonough County pop. 26,828
• Mchenry County pop. 311,122
• Mclean County pop. 170,889
• Menard County pop. 12,164
• Mercer County pop. 15,582
• Monroe County pop. 34,932
• Montgomery County pop. 28,084
• Morgan County pop. 32,606
• Moultrie County pop. 14,510
• Ogle County pop. 51,449
• Peoria County pop. 179,432
• Perry County pop. 20,985
• Piatt County pop. 16,753
• Pike County pop. 14,618
• Pope County pop. 3,779
• Pulaski County pop. 5,065
• Putnam County pop. 5,566
• Randolph County pop. 30,142
• Richland County pop. 15,796
• Rock Island County pop. 142,909
• Saline County pop. 23,320
• Sangamon County pop. 194,734
• Schuyler County pop. 6,843
• Scott County pop. 4,836
• Shelby County pop. 20,789
• St Clair County pop. 254,796
• Stark County pop. 5,294
• Stephenson County pop. 44,021
• Tazewell County pop. 130,413
• Union County pop. 16,923
• Vermilion County pop. 73,095
• Wabash County pop. 11,202
• Warren County pop. 16,531
• Washington County pop. 13,655
• Wayne County pop. 15,963
• White County pop. 13,784
• Whiteside County pop. 55,305
• Will County pop. 697,252
• Williamson County pop. 66,879

Municipalities 1,294

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• City of North Chicago pop. 30,029
• City of Northlake pop. 12,664
• City of O Fallon pop. 32,292
• City of Oak Forest pop. 26,793
• City of Oakbrook Terrace pop. 2,725
• City of Oakland pop. 732
• City of Oglesby pop. 3,660
• City of Olney pop. 8,692
• City of Oneida pop. 684
• City of Oregon pop. 3,592
• City of Orient pop. 323
• City of Ottawa pop. 18,749
• City of Palos Heights pop. 11,819
• City of Palos Hills pop. 18,117
• City of Pana pop. 5,262
• City of Paris pop. 8,140
• City of Park City pop. 7,867
• City of Park Ridge pop. 38,810
• City of Paxton pop. 4,459
• City of Pekin pop. 31,448
• City of Peoria pop. 111,666
• City of Peru pop. 9,842
• City of Petersburg pop. 2,231
• City of Pinckneyville pop. 5,198
• City of Pittsfield pop. 4,193
• City of Plano pop. 12,191
• City of Polo pop. 2,262
• City of Pontiac pop. 11,359
• City of Princeton pop. 7,716
• City of Prophetstown pop. 1,929
• City of Prospect Heights pop. 15,691
• City of Quincy pop. 39,131
• City of Red Bud pop. 3,684
• City of Robinson pop. 7,187
• City of Rochelle pop. 9,367
• City of Rock Falls pop. 8,724
• City of Rock Island pop. 36,636
• City of Rockford pop. 147,711
• City of Rolling Meadows pop. 23,781
• City of Roodhouse pop. 1,545
• City of Rosiclare pop. 966
• City of Rushville pop. 3,026
• City of Salem pop. 7,187
• City of Sandwich pop. 7,178
• City of Savanna pop. 2,909
• City of Sesser pop. 1,865
• City of Shawneetown pop. 1,054
• City of Shelbyville pop. 4,609
• City of Silvis pop. 7,952
• City of South Beloit pop. 7,932

Townships 1,425

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• Township of Clayton pop. 632
• Township of Clear Lake pop. 8,310
• Township of Clement pop. 448
• Township of Clinton pop. 1,797
• Township of Clintonia pop. 7,267
• Township of Clover pop. 840
• Township of Clyde pop. 412
• Township of Coal Valley pop. 4,413
• Township of Coe pop. 1,759
• Township of Colchester pop. 1,513
• Township of Cold Spring pop. 323
• Township of Coldbrook pop. 426
• Township of Colfax pop. 232
• Township of Collinsville pop. 35,627
• Township of Coloma pop. 10,508
• Township of Colona pop. 6,680
• Township of Columbus pop. 562
• Township of Compromise pop. 1,287
• Township of Concord pop. 290
• Township of Concord pop. 371
• Township of Concord pop. 1,435
• Township of Condit pop. 470
• Township of Cooper pop. 873
• Township of Cooperstown pop. 272
• Township of Copley pop. 389
• Township of Coral pop. 3,623
• Township of Cordova pop. 849
• Township of Cornwall pop. 257
• Township of Cortland pop. 11,204
• Township of Corwin pop. 590
• Township of Cottage pop. 221
• Township of Cotton Hill pop. 979
• Township of Cottonwood pop. 480
• Township of Council Hill pop. 134
• Township of Covington pop. 379
• Township of Crane Creek pop. 147
• Township of Creek pop. 475
• Township of Crescent pop. 531
• Township of Crete pop. 23,601
• Township of Crittenden pop. 328
• Township of Crook pop. 286
• Township of Crooked Creek pop. 367
• Township of Crooked Creek pop. 674
• Township of Cropsey pop. 192
• Township of Crouch pop. 382
• Township of Cruger pop. 1,842
• Township of Cuba pop. 17,222
• Township of Cunningham pop. 38,681
• Township of Curran pop. 1,549
• Township of Custer pop. 1,352