The graph below ranks each Illinois County by total residents according to the 2012 census estimates.

Illinois total population by county

CountyTotal Population
CookCook County total population - 52279925,227,992
DuPageDuPage County total population - 927418927,418
LakeLake County total population - 701219701,219
WillWill County total population - 681590681,590
KaneKane County total population - 521306521,306
McHenryMcHenry County total population - 307729307,729
WinnebagoWinnebago County total population - 291844291,844
St. ClairSt. Clair County total population - 268714268,714
MadisonMadison County total population - 267899267,899
ChampaignChampaign County total population - 203435203,435
SangamonSangamon County total population - 199269199,269
PeoriaPeoria County total population - 187255187,255
McLeanMcLean County total population - 172295172,295
Rock IslandRock Island County total population - 147514147,514
TazewellTazewell County total population - 136122136,122
KendallKendall County total population - 118108118,108
La SalleLa Salle County total population - 112944112,944
KankakeeKankakee County total population - 112847112,847
MaconMacon County total population - 109978109,978
DeKalbDeKalb County total population - 104622104,622
VermilionVermilion County total population - 8071580,715
AdamsAdams County total population - 6724367,243
WilliamsonWilliamson County total population - 6671466,714
JacksonJackson County total population - 6011360,113
WhitesideWhiteside County total population - 5783257,832
BooneBoone County total population - 5385953,859
ColesColes County total population - 5365953,659
OgleOgle County total population - 5285052,850
KnoxKnox County total population - 5225452,254
GrundyGrundy County total population - 5020850,208
HenryHenry County total population - 5017750,177
MacoupinMacoupin County total population - 4720547,205
StephensonStephenson County total population - 4694346,943
FranklinFranklin County total population - 3948239,482
WoodfordWoodford County total population - 3896538,965
MarionMarion County total population - 3886838,868
JeffersonJefferson County total population - 3867738,677
LivingstonLivingston County total population - 3852538,525
ClintonClinton County total population - 3808338,083
FultonFulton County total population - 3667336,673
MorganMorgan County total population - 3530935,309
LeeLee County total population - 3513235,132
ChristianChristian County total population - 3459734,597
EffinghamEffingham County total population - 3433534,335
BureauBureau County total population - 3431434,314
MonroeMonroe County total population - 3331033,310
RandolphRandolph County total population - 3295632,956
McDonoughMcDonough County total population - 3257232,572
LoganLogan County total population - 3002730,027
MontgomeryMontgomery County total population - 2968829,688
IroquoisIroquois County total population - 2925729,257
SalineSaline County total population - 2500725,007
JerseyJersey County total population - 2273822,738
Jo DaviessJo Daviess County total population - 2255222,552
ShelbyShelby County total population - 2220522,205
PerryPerry County total population - 2207822,078
FayetteFayette County total population - 2202522,025
DouglasDouglas County total population - 1988319,883
CrawfordCrawford County total population - 1960519,605
HancockHancock County total population - 1890018,900
EdgarEdgar County total population - 1816018,160
WarrenWarren County total population - 1780817,808
UnionUnion County total population - 1764917,649
BondBond County total population - 1761217,612
WayneWayne County total population - 1662216,622
LawrenceLawrence County total population - 1659216,592
PiattPiatt County total population - 1651116,511
De WittDe Witt County total population - 1648416,484
ClarkClark County total population - 1629816,298
PikePike County total population - 1627616,276
MercerMercer County total population - 1622316,223
RichlandRichland County total population - 1621416,214
MassacMassac County total population - 1517415,174
CarrollCarroll County total population - 1504715,047
MoultrieMoultrie County total population - 1494614,946
WashingtonWashington County total population - 1464014,640
WhiteWhite County total population - 1458414,584
MasonMason County total population - 1437214,372
FordFord County total population - 1399713,997
ClayClay County total population - 1374613,746
GreeneGreene County total population - 1362213,622
CassCass County total population - 1342113,421
JohnsonJohnson County total population - 1278612,786
MenardMenard County total population - 1270412,704
MarshallMarshall County total population - 1231512,315
WabashWabash County total population - 1174611,746
CumberlandCumberland County total population - 1097710,977
JasperJasper County total population - 96569,656
HamiltonHamilton County total population - 83868,386
AlexanderAlexander County total population - 77527,752
SchuylerSchuyler County total population - 74907,490
HendersonHenderson County total population - 70627,062
BrownBrown County total population - 69086,908
EdwardsEdwards County total population - 67246,724
PulaskiPulaski County total population - 59605,960
StarkStark County total population - 59485,948
PutnamPutnam County total population - 58765,876
GallatinGallatin County total population - 54395,439
ScottScott County total population - 52825,282
CalhounCalhoun County total population - 50215,021
PopePope County total population - 42714,271
HardinHardin County total population - 42564,256

Find a place in Illinois

Illinois population comparison tables
Total: Total
White:
Total Percentage
Black:
Total Percentage
Asian:
Total Percentage
American Indian:
Total Percentage
Hawaiian & Pacific Islander:
Total Percentage
Mixed Race:
Total Percentage




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