Illinois Population by County

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Population, 2014 estimate - (Number)
County Value
Adams 66,988
Alexander 7,492
Bond 17,269
Boone 53,869
Brown 6,832
Bureau 33,840
Calhoun 4,956
Carroll 14,715
Cass 13,156
Champaign 207,133
Christian 33,892
Clark 16,180
Clay 13,520
Clinton 37,857
Coles 53,320
Cook 5,246,456
Crawford 19,393
Cumberland 10,833
De Witt 16,284
DeKalb 105,462
Douglas 19,889
DuPage 932,708
Edgar 17,841
Edwards 6,617
Effingham 34,320
Fayette 21,870
Ford 13,688
Franklin 39,411
Fulton 36,007
Gallatin 5,291
Greene 13,434
Grundy 50,425
Hamilton 8,296
Hancock 18,564
Hardin 4,129
Henderson 6,916
Henry 49,635
Iroquois 28,879
Jackson 59,677
Jasper 9,623
Jefferson 38,534
Jersey 22,571
Jo Daviess 22,254
Johnson 12,601
Kane 527,306
Kankakee 111,375
Kendall 121,350
Knox 52,069
Lake 705,186
LaSalle 111,241
Lawrence 16,519
Lee 34,735
Livingston 37,903
Logan 29,746
Macon 108,350
Macoupin 46,453
Madison 266,560
Marion 38,571
Marshall 12,014
Mason 13,898
Massac 14,905
McDonough 31,880
McHenry 307,283
McLean 174,061
Menard 12,570
Mercer 15,945
Monroe 33,722
Montgomery 29,359
Morgan 34,929
Moultrie 14,837
Ogle 52,085
Peoria 187,319
Perry 21,672
Piatt 16,431
Pike 16,022
Pope 4,276
Pulaski 5,815
Putnam 5,814
Randolph 32,869
Richland 16,061
Rock Island 146,063
Saline 24,612
Sangamon 198,997
Schuyler 7,330
Scott 5,204
Shelby 22,048
St. Clair 265,729
Stark 5,813
Stephenson 46,435
Tazewell 135,707
Union 17,447
Vermilion 79,728
Wabash 11,549
Warren 17,874
Washington 14,337
Wayne 16,543
White 14,374
Whiteside 56,876
Will 685,419
Williamson 67,008
Winnebago 288,542
Woodford 39,187