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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
2018-07-01
IllinoisState11,430,60212,419,92712,831,57212,741,080
AdamsCounty66,09068,26167,09765,691
AlexanderCounty10,6269,5838,2386,060
BondCounty14,99117,63617,76816,630
BooneCounty30,80641,78854,16753,577
BrownCounty5,8366,9526,9376,556
BureauCounty35,68835,49634,98032,993
CalhounCounty5,3225,0795,0894,802
CarrollCounty16,80516,67115,39114,312
CassCounty13,43713,69113,64112,260
ChampaignCounty173,025179,687201,081209,983
ChristianCounty34,41835,38034,79332,661
ClarkCounty15,92116,99516,33515,596
ClayCounty14,46014,41713,81513,253
ClintonCounty33,94435,53637,76237,639
ColesCounty51,64453,21053,87650,885
CookCounty5,105,0445,376,7415,195,0265,180,493
CrawfordCounty19,46420,46019,81818,807
CumberlandCounty10,67011,31111,04510,808
DeKalbCounty77,93288,941105,160104,143
De Witt (DeWitt)County16,51616,80216,55815,769
DouglasCounty19,46419,90919,97719,479
DuPageCounty781,689904,594916,771928,589
EdgarCounty19,59519,64318,57617,360
EdwardsCounty7,4406,9786,7216,392
EffinghamCounty31,70434,26734,24634,208
FayetteCounty20,89321,81022,14221,416
FordCounty14,27514,22714,08113,264
FranklinCounty40,31939,02139,99638,701
FultonCounty38,08038,24437,06934,844
GallatinCounty6,9096,4265,5895,058
GreeneCounty15,31714,76613,88613,044
GrundyCounty32,33737,52850,07750,972
HamiltonCounty8,4998,6138,4578,163
HancockCounty21,37320,17119,10417,844
HardinCounty5,1894,7934,3233,910
HendersonCounty8,0968,1767,3286,709
HenryCounty51,15951,03250,48549,090
IroquoisCounty30,78731,34029,71927,604
JacksonCounty61,06759,60760,20957,419
JasperCounty10,60910,1139,7019,611
JeffersonCounty37,02040,05138,82537,820
JerseyCounty20,53921,64922,98621,847
Jo DaviessCounty21,82122,29622,68121,366
JohnsonCounty11,34712,87712,58112,456
KaneCounty317,471404,508515,378534,216
KankakeeCounty96,255103,825113,450110,024
KendallCounty39,41354,539114,803127,915
KnoxCounty56,39355,84252,92550,112
LakeCounty516,418644,682703,396700,832
LaSalleCounty106,913111,599113,915109,430
LawrenceCounty15,97215,44916,90315,765
LeeCounty34,39236,06236,03134,223
LivingstonCounty39,30139,73438,94835,761
LoganCounty30,79831,19930,30528,925
MaconCounty117,206114,690110,775104,712
MacoupinCounty47,67949,00847,76545,313
MadisonCounty249,238259,019269,334264,461
MarionCounty41,56141,67839,43737,620
MarshallCounty12,84613,15912,63811,534
MasonCounty16,26916,03414,66613,565
MassacCounty14,75215,16315,43114,080
McDonoughCounty35,24432,90632,61029,955
McHenryCounty183,241259,524308,827308,570
McLeanCounty129,180150,384169,577172,828
MenardCounty11,16412,48312,70512,288
MercerCounty17,29016,94016,43415,601
MonroeCounty22,42227,62532,95134,335
MontgomeryCounty30,72830,64630,10528,601
MorganCounty36,39736,62735,54533,976
MoultrieCounty13,93014,28814,85214,717
OgleCounty45,95751,00153,49750,923
PeoriaCounty182,827183,466186,496180,621
PerryCounty21,41223,09122,34621,174
PiattCounty15,54816,38516,72516,396
PikeCounty17,57717,36216,43015,611
PopeCounty4,3734,3974,4704,212
PulaskiCounty7,5237,3336,1575,463
PutnamCounty5,7306,0776,0065,740
RandolphCounty34,58333,89733,48032,106
RichlandCounty16,54516,29116,23315,763
Rock IslandCounty148,723149,390147,546143,477
SalineCounty26,55126,75224,91323,906
SangamonCounty178,386188,974197,465195,348
SchuylerCounty7,4987,1817,5446,907
ScottCounty5,6445,5395,3554,926
ShelbyCounty22,26122,88422,35921,741
StarkCounty6,5346,3305,9925,427
St. ClairCounty262,852256,043270,062261,059
StephensonCounty48,05248,99547,71144,753
TazewellCounty123,692128,465135,392132,328
UnionCounty17,61918,31117,81016,841
VermilionCounty88,25783,92981,62576,806
WabashCounty13,11112,93211,94711,549
WarrenCounty19,18118,73617,71017,032
WashingtonCounty14,96515,15014,71613,995
WayneCounty17,24117,14916,76016,332
WhiteCounty16,52215,38114,66513,665
WhitesideCounty60,18660,66258,49455,626
WillCounty357,313502,211677,560692,310
WilliamsonCounty57,73361,30066,36567,056
WinnebagoCounty252,913278,441295,264284,081
WoodfordCounty32,65335,49138,66438,463
USA [United States of America]Federal Republic248,709,873281,421,906308,758,105327,167,434

Source: US Census Bureau (web).

Explanation: 2000 population in the boundaries of 2010. 2010 and 2018 population in the boundaries of 2018.

Further information about the population structure:

Gender (E 2017)
Males6,292,478
Females6,509,545
Age Groups (E 2017)
0-14 years2,389,800
15-64 years8,466,825
65+ years1,945,398
Age Distribution (E 2017)
0-9 years1,563,745
10-19 years1,662,184
20-29 years1,769,925
30-39 years1,724,463
40-49 years1,621,234
50-59 years1,728,560
60-69 years1,427,702
70-79 years807,546
80+ years496,664
»Race« (E 2017)
White9,864,942
Black/African American1,872,275
Indigenous75,867
Asian729,694
Pacific Islander8,374
2 or more250,871
Ethnicity (E 2017)
Hispanic or Latino2,209,337
Other10,592,686