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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, »race«, ethnicity).

NameStatusPopulation
Census
1990-04-01
Population
Census
2000-04-01
Population
Census
2010-04-01
Population
Estimate
2019-07-01
IllinoisState11,430,60212,419,29312,830,63212,667,017
AdamsCounty66,09068,27767,10365,402
AlexanderCounty10,6269,5908,2385,791
BondCounty14,99117,63317,76816,458
BooneCounty30,80641,78654,16553,281
BrownCounty5,8366,9506,9376,619
BureauCounty35,68835,50334,97832,621
CalhounCounty5,3225,0845,0894,740
CarrollCounty16,80516,67415,38714,338
CassCounty13,43713,69513,64212,141
ChampaignCounty173,025179,669201,081209,612
ChristianCounty34,41835,37234,80032,427
ClarkCounty15,92117,00816,33515,465
ClayCounty14,46014,56013,81513,177
ClintonCounty33,94435,53537,76237,440
ColesCounty51,64453,19653,87350,774
CookCounty5,105,0675,376,7415,194,6755,145,326
CrawfordCounty19,46420,45219,81718,686
CumberlandCounty10,67011,25311,04810,733
DeKalbCounty77,93288,969105,160105,131
De Witt (DeWitt)County16,51616,79816,56115,624
DouglasCounty19,46419,92219,98019,450
DuPageCounty781,666904,161916,924922,761
EdgarCounty19,59519,70418,57617,169
EdwardsCounty7,4406,9716,7216,405
EffinghamCounty31,70434,26434,24234,109
FayetteCounty20,89321,80222,14021,332
FordCounty14,27514,24114,08112,972
FranklinCounty40,31939,01839,56138,530
FultonCounty38,08038,25037,06934,240
GallatinCounty6,9096,4455,5894,833
GreeneCounty15,31714,76113,88612,922
GrundyCounty32,33737,53550,06351,031
HamiltonCounty8,4998,6218,4578,133
HancockCounty21,37320,12119,10417,700
HardinCounty5,1894,8004,3203,848
HendersonCounty8,0968,2137,3316,709
HenryCounty51,15951,02050,48648,933
IroquoisCounty30,78731,33429,71827,093
JacksonCounty61,06759,61260,21856,844
JasperCounty10,60910,1179,6989,618
JeffersonCounty37,02040,04538,82737,635
JerseyCounty20,53921,66822,98521,667
Jo DaviessCounty21,82122,28922,67821,224
JohnsonCounty11,34712,87812,58212,380
KaneCounty317,471404,119515,269532,293
KankakeeCounty96,255103,833113,449109,569
KendallCounty39,41354,544114,736128,900
KnoxCounty56,39355,83652,91949,669
LakeCounty516,418644,356703,462697,134
La SalleCounty106,913111,509113,924108,517
LawrenceCounty15,97215,45216,83315,665
LeeCounty34,39236,06236,03134,061
LivingstonCounty39,30139,67838,95035,557
LoganCounty30,79831,18330,30528,633
MaconCounty117,206114,706110,768104,012
MacoupinCounty47,67949,01947,76545,079
MadisonCounty249,238258,941269,282263,609
MarionCounty41,56141,69139,43737,309
MarshallCounty12,84613,18012,64011,463
MasonCounty16,26916,03814,66613,387
MassacCounty14,75215,16115,42913,772
McDonoughCounty35,24432,91332,61229,792
McHenryCounty183,241260,077308,760307,439
McLeanCounty129,180150,433169,572171,272
MenardCounty11,16412,48612,70512,198
MercerCounty17,29016,95716,43415,490
MonroeCounty22,42227,61932,95734,738
MontgomeryCounty30,72830,65230,10428,401
MorganCounty36,39736,61635,54733,679
MoultrieCounty13,93014,28714,84614,464
OgleCounty45,95751,03253,49750,660
PeoriaCounty182,827183,433186,494179,359
PerryCounty21,41223,09422,35020,935
PiattCounty15,54816,36516,72916,391
PikeCounty17,57717,38416,43015,574
PopeCounty4,3734,4134,4704,176
PulaskiCounty7,5237,3486,1615,309
PutnamCounty5,7306,0866,0065,745
RandolphCounty34,58333,89333,47631,725
RichlandCounty16,54516,14916,23315,519
Rock IslandCounty148,723149,374147,546141,775
SalineCounty26,55126,73324,91323,540
SangamonCounty178,386188,951197,465194,882
SchuylerCounty7,4987,1897,5446,829
ScottCounty5,6445,5375,3554,974
ShelbyCounty22,26122,89322,36321,625
StarkCounty6,5346,3325,9945,312
St. ClairCounty262,852256,082270,056259,889
StephensonCounty48,05248,97947,71144,371
TazewellCounty123,692128,485135,394131,848
UnionCounty17,61918,29317,80816,693
VermilionCounty88,25783,91981,62575,736
WabashCounty13,11112,93711,94711,370
WarrenCounty19,18118,73517,70716,816
WashingtonCounty14,96515,14814,71613,926
WayneCounty17,24117,15116,76016,196
WhiteCounty16,52215,37114,66513,574
WhitesideCounty60,18660,65358,49855,215
WillCounty357,313502,266677,560690,176
WilliamsonCounty57,73361,29666,35766,633
WinnebagoCounty252,913278,418295,266282,465
WoodfordCounty32,65335,46938,66438,353
USA [United States of America]Federal Republic248,709,873281,421,906308,745,538328,329,953

Source: U.S. Census Bureau (web).

Explanation: All population totals refer to 2020 boundaries.


Further information about the population structure:

Gender (E 2019)
Males6,226,558
Females6,445,263
Age Groups (E 2019)
0-14 years2,322,679
15-64 years8,305,910
65+ years2,043,232
Age Distribution (E 2019)
0-9 years1,516,661
10-19 years1,628,648
20-29 years1,727,207
30-39 years1,710,821
40-49 years1,587,108
50-59 years1,654,462
60-69 years1,465,861
70-79 years872,882
80+ years508,171
»Race« (E 2019)
White9,726,915
Black/African American1,852,516
Indigenous75,500
Asian747,690
Pacific Islander8,385
2 or more260,815
Ethnicity (E 2019)
Hispanic or Latino2,219,882
Other10,451,939

See also:


USA: Counties