Illinois Population by County
year 2000


Illinois Population by County
year 2000

Area Population
Cook County 5,376,741
DuPage County 904,161
Lake County 644,356
Will County 502,266
Kane County 404,119
Winnebago County 278,418
McHenry County 260,077
Madison County 258,941
St. Clair County 256,082
Sangamon County 188,951
Peoria County 183,433
Champaign County 179,669
McLean County 150,433
Rock Island County 149,374
Tazewell County 128,485
Macon County 114,706
La Salle County 111,509
Kankakee County 103,833
DeKalb County 88,969
Vermilion County 83,919
Adams County 68,277
Williamson County 61,296
Whiteside County 60,653
Jackson County 59,612
Knox County 55,836
Kendall County 54,544
Coles County 53,196
Ogle County 51,032
Henry County 51,020
Macoupin County 49,019
Stephenson County 48,979
Boone County 41,786
Marion County 41,691
Jefferson County 40,045
Livingston County 39,678
Franklin County 39,018
Fulton County 38,250
Grundy County 37,535
Morgan County 36,616
Lee County 36,062
Clinton County 35,535
Bureau County 35,503
Woodford County 35,469
Christian County 35,372
Effingham County 34,264
Randolph County 33,893
McDonough County 32,913
Iroquois County 31,334
Logan County 31,183
Montgomery County 30,652
Monroe County 27,619
Saline County 26,733
Perry County 23,094
Shelby County 22,893
Jo Daviess County 22,289
Fayette County 21,802
Jersey County 21,668
Crawford County 20,452
Hancock County 20,121
Douglas County 19,922
Edgar County 19,704
Warren County 18,735
Union County 18,293
Bond County 17,633
Pike County 17,384
Wayne County 17,151
Clark County 17,008
Mercer County 16,957
De Witt County 16,798
Carroll County 16,674
Piatt County 16,365
Richland County 16,149
Mason County 16,038
Lawrence County 15,452
White County 15,371
Massac County 15,161
Washington County 15,148
Greene County 14,761
Clay County 14,560
Moultrie County 14,287
Ford County 14,241
Cass County 13,695
Marshall County 13,180
Wabash County 12,937
Johnson County 12,878
Menard County 12,486
Cumberland County 11,253
Jasper County 10,117
Alexander County 9,590
Hamilton County 8,621
Henderson County 8,213
Pulaski County 7,348
Schuyler County 7,189
Edwards County 6,971
Brown County 6,950
Gallatin County 6,445
Stark County 6,332
Putnam County 6,086
Scott County 5,537
Calhoun County 5,084
Hardin County 4,800
Pope County 4,413