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Illinois

State in USA

Contents: Subdivision

The population development in Illinois as well as related information and services (Wikipedia, Google, images).

The Details icon links to further information about a selected division including its population structure (gender, age groups, age distribution, urbanization, »race«, ethnicity).

NameStatusPopulation
Census
1990-04-01		Population
Census
2000-04-01		Population
Census
2010-04-01		Population
Census
2020-04-01		Population
Estimate
2024-07-01
IllinoisState11,430,60212,419,29312,830,63212,821,81412,710,158
AdamsCounty66,09068,27767,10365,73664,109
AlexanderCounty10,6269,5908,2385,2414,594
BondCounty14,99117,63317,76816,89516,576
BooneCounty30,80641,78654,16553,44653,313
BrownCounty5,8366,9506,9376,2506,307
BureauCounty35,68835,50334,97833,27432,486
CalhounCounty5,3225,0845,0894,4344,224
CarrollCounty16,80516,67415,38715,71415,444
CassCounty13,43713,69513,64213,03412,713
ChampaignCounty173,025179,669201,081206,455212,374
ChristianCounty34,41835,37234,80034,05933,247
ClarkCounty15,92117,00816,33515,48115,076
ClayCounty14,46014,56013,81513,28912,821
ClintonCounty33,94435,53537,76236,90337,087
ColesCounty51,64453,19653,87347,19246,423
CookCounty5,105,0675,376,7415,194,6755,278,9695,182,617
CrawfordCounty19,46420,45219,81718,65918,388
CumberlandCounty10,67011,25311,04810,45710,305
DeKalbCounty77,93288,969105,160100,514101,335
De Witt (DeWitt)County16,51616,79816,56115,52115,319
DouglasCounty19,46419,92219,98019,75119,824
DuPageCounty781,666904,161916,924933,031937,142
EdgarCounty19,59519,70418,57616,87616,398
EdwardsCounty7,4406,9716,7216,2445,984
EffinghamCounty31,70434,26434,24234,67934,602
FayetteCounty20,89321,80222,14021,49021,157
FordCounty14,27514,24114,08113,52213,451
FranklinCounty40,31939,01839,56137,82037,033
FultonCounty38,08038,25037,06933,67332,510
GallatinCounty6,9096,4455,5894,9544,690
GreeneCounty15,31714,76113,88611,98611,417
GrundyCounty32,33737,53550,06352,55453,835
HamiltonCounty8,4998,6218,4577,9897,818
HancockCounty21,37320,12119,10417,62817,008
HardinCounty5,1894,8004,3203,6513,550
HendersonCounty8,0968,2137,3316,3856,048
HenryCounty51,15951,02050,48649,28948,177
IroquoisCounty30,78731,33429,71827,06326,067
JacksonCounty61,06759,61260,21853,33853,199
JasperCounty10,60910,1179,6989,3009,092
JeffersonCounty37,02040,04538,82737,11336,107
JerseyCounty20,53921,66822,98521,51321,150
Jo DaviessCounty21,82122,28922,67822,08221,528
JohnsonCounty11,34712,87812,58213,30713,320
KaneCounty317,471404,119515,269516,722520,997
KankakeeCounty96,255103,833113,449107,647106,410
KendallCounty39,41354,544114,736131,863143,171
KnoxCounty56,39355,83652,91949,97048,716
LakeCounty516,418644,356703,462714,412718,604
La SalleCounty106,913111,509113,924109,646108,390
LawrenceCounty15,97215,45216,83315,30714,801
LeeCounty34,39236,06236,03134,15133,544
LivingstonCounty39,30139,67838,95035,84835,375
LoganCounty30,79831,18330,30527,98727,518
MaconCounty117,206114,706110,768103,996100,737
MacoupinCounty47,67949,01947,76545,03943,895
MadisonCounty249,238258,941269,282265,972263,017
MarionCounty41,56141,69139,43737,73836,437
MarshallCounty12,84613,18012,64011,74511,552
MasonCounty16,26916,03814,66613,08612,543
MassacCounty14,75215,16115,42914,17213,627
McDonoughCounty35,24432,91332,61227,25026,662
McHenryCounty183,241260,077308,760310,289315,959
McLeanCounty129,180150,433169,572171,241172,069
MenardCounty11,16412,48612,70512,29611,963
MercerCounty17,29016,95716,43415,69615,292
MonroeCounty22,42227,61932,95734,95434,969
MontgomeryCounty30,72830,65230,10428,32127,615
MorganCounty36,39736,61635,54733,56732,618
MoultrieCounty13,93014,28714,84614,53714,365
OgleCounty45,95751,03253,49751,84751,345
PeoriaCounty182,827183,433186,494182,021179,630
PerryCounty21,41223,09422,35020,94520,272
PiattCounty15,54816,36516,72916,67816,628
PikeCounty17,57717,38416,43014,73114,258
PopeCounty4,3734,4134,4703,7683,703
PulaskiCounty7,5237,3486,1615,2084,879
PutnamCounty5,7306,0866,0065,6375,633
RandolphCounty34,58333,89333,47630,15929,903
RichlandCounty16,54516,14916,23315,82515,362
Rock IslandCounty148,723149,374147,546144,665142,731
SalineCounty26,55126,73324,91323,82122,826
SangamonCounty178,386188,951197,465196,412194,345
SchuylerCounty7,4987,1897,5446,9016,750
ScottCounty5,6445,5375,3555,0804,880
ShelbyCounty22,26122,89322,36320,97820,542
StarkCounty6,5346,3325,9945,4015,272
St. ClairCounty262,852256,082270,056257,631251,149
StephensonCounty48,05248,97947,71144,70043,088
TazewellCounty123,692128,485135,394131,552129,821
UnionCounty17,61918,29317,80817,35316,886
VermilionCounty88,25783,91981,62574,20371,106
WabashCounty13,11112,93711,94711,35910,979
WarrenCounty19,18118,73517,70716,84216,217
WashingtonCounty14,96515,14814,71613,76713,535
WayneCounty17,24117,15116,76016,20615,928
WhiteCounty16,52215,37114,66513,87613,395
WhitesideCounty60,18660,65358,49855,70054,657
WillCounty357,313502,266677,560697,353708,583
WilliamsonCounty57,73361,29666,35767,15467,064
WinnebagoCounty252,913278,418295,266285,371283,790
WoodfordCounty32,65335,46938,66438,45738,290
USA [United States of America]Federal Republic248,709,873281,421,906308,745,538331,515,736340,110,988

Source: U.S. Census Bureau.

Explanation: Latest available rebased total population figures are tabulated.

Further information about the population structure:

Gender (C 2020)
Males6,283,130
Females6,529,378
Age Groups (C 2020)
0-17 years2,813,039
18-64 years7,905,484
65+ years2,093,985
Age Distribution (C 2020)
80+ years497,525
70-79 years905,185
60-69 years1,521,606
50-59 years1,676,896
40-49 years1,609,617
30-39 years1,729,244
20-29 years1,715,581
10-19 years1,687,567
0-9 years1,469,287
Urbanization (C 2020)
Rural1,674,918
Urban11,137,590
»Race« (C 2020)
White7,868,227
Black/African American1,808,271
Indigenous96,498
Asian754,878
Pacific Islander4,501
Some other1,135,149
2 or more1,144,984
Ethnicity (C 2020)
Hispanic or Latino2,337,410
Other10,475,098

See also: