USA - Illinois

Census Results

1960-04-01 10,081,158
1970-04-01 11,113,976
1980-04-01 11,426,518
1990-04-01 11,430,602
2000-04-01 12,419,293
2010-04-01 12,830,632

General Information

Official name Illinois
Official name [native] Illinois
Capital Springfield
Capital [native] Springfield
ISO code US-IL
Statistical agency Bureau of the Census, USA

Administrative units

codecountiescapitalarea (sq.km.)population
2000-04-01
census		population
2010-04-01
census		population
2011-07-01
estimate
17001Adams CountyQuincy2,256.6068,27767,10367,159
17003Alexander CountyCairo654.089,5908,2388,036
17005Bond CountyGreenville991.1117,63317,76817,727
17007Boone CountyBelvidere730.2241,78654,16554,367
17009Brown CountyMount Sterling795.756,9506,9376,878
17011Bureau CountyPrinceton2,261.8435,50334,97834,606
17013Calhoun CountyHardin734.755,0845,0895,048
17015Carroll CountyMount Carroll1,206.3416,67415,38715,163
17017Cass CountyVirginia993.8613,69513,64213,579
17019Champaign CountyUrbana2,583.59179,669201,081201,685
17021Christian CountyTaylorville1,853.6835,37234,80034,865
17023Clark CountyMarshall1,307.6317,00816,33516,161
17025Clay CountyLouisville1,216.8814,56013,81513,728
17027Clinton CountyCarlyle1,304.0135,53537,76237,956
17029Coles CountyCharleston1,321.0853,19653,87353,916
17031Cook CountyChicago4,234.735,376,7415,194,6755,217,080
17033Crawford CountyRobinson1,154.4620,45219,81719,857
17035Cumberland CountyToledo898.7311,25311,04811,096
17037DeKalb CountySycamore1,049.3388,969105,160104,743
17039De Witt CountyClinton1,644.5616,79816,56116,578
17041Douglas CountyTuscola1,081.1119,92219,98019,836
17043DuPage CountyWheaton871.66904,161916,924923,222
17045Edgar CountyParis1,616.6219,70418,57618,393
17047Edwards CountyAlbion576.696,9716,7216,618
17049Effingham CountyEffingham1,242.9434,26434,24234,280
17051Fayette CountyVandalia1,878.6721,80222,14022,133
17053Ford CountyPaxton1,259.8214,24114,08113,976
17055Franklin CountyBenton1,117.3239,01839,56139,627
17057Fulton CountyLewistown2,285.9038,25037,06936,962
17059Gallatin CountyShawneetown850.586,4455,5895,528
17061Greene CountyCarrollton1,415.0114,76113,88613,798
17063Grundy CountyMorris1,114.7837,53550,06350,130
17065Hamilton CountyMcLeansboro1,128.828,6218,4578,425
17067Hancock CountyCarthage2,109.6520,12119,10419,031
17069Hardin CountyElizabethtown470.164,8004,3204,281
17071Henderson CountyOquawka1,023.368,2137,3317,196
17073Henry CountyCambridge2,138.2951,02050,48650,328
17075Iroquois CountyWatseka2,895.6831,33429,71829,475
17077Jackson CountyMurphysboro1,560.5559,61260,21860,365
17079Jasper CountyNewton1,289.8710,1179,6989,717
17081Jefferson CountyMount Vernon1,511.8040,04538,82738,713
17083Jersey CountyJerseyville976.4821,66822,98522,916
17085Jo Daviess CountyGalena1,602.4822,28922,67822,712
17087Johnson CountyVienna903.6012,87812,58212,654
17089Kane CountyGeneva1,357.36404,119515,269520,271
17091Kankakee CountyKankakee1,764.92103,833113,449113,698
17093Kendall CountyYorkville835.7154,544114,736116,631
17095Knox CountyGalesburg1,864.0155,83652,91952,917
17097Lake CountyOttawa2,973.41644,356703,462706,222
17099LaSalle CountyWaukegan3,542.97111,509113,924113,518
17101Lawrence CountyLawrenceville968.5015,45216,83316,745
17103Lee CountyDixon1,888.8536,06236,03135,467
17105Livingston CountyPontiac2,707.6539,67838,95038,885
17107Logan CountyLincoln1,603.2331,18330,30530,140
17109McDonough CountyMacomb1,516.1332,91332,61232,582
17111McHenry CountyWoodstock2,247.10260,077308,760308,944
17113McLean CountyBloomington1,917.50150,433169,572170,556
17115Macon CountyDecatur1,491.08114,706110,768110,730
17117Macoupin CountyCarlinville1,032.1649,01947,76547,687
17119Madison CountyEdwardsville1,459.12258,941269,282268,459
17121Marion CountySalem627.0941,69139,43739,335
17123Marshall CountyLacon1,528.1413,18012,64012,533
17125Mason CountyHavana1,582.8216,03814,66614,485
17127Massac CountyMetropolis3,072.4815,16115,42915,442
17129Menard CountyPetersburg816.8012,48612,70512,703
17131Mercer CountyAledo1,473.3916,95716,43416,363
17133Monroe CountyWaterloo1,030.0627,61932,95733,306
17135Montgomery CountyHillsboro1,838.2430,65230,10429,848
17137Morgan CountyJacksonville1,482.1536,61635,54735,543
17139Moultrie CountySullivan892.1714,28714,84614,824
17141Ogle CountyOregon1,976.8651,03253,49753,115
17143Peoria CountyPeoria1,634.00183,433186,494186,834
17145Perry CountyPinckneyville1,157.2323,09422,35022,264
17147Piatt CountyMonticello1,140.4516,36516,72916,675
17149Pike CountyPittsfield2,198.5617,38416,43016,398
17151Pope CountyGolconda970.314,4134,4704,370
17153Pulaski CountyMound City526.627,3486,1616,046
17155Putnam CountyHennepin446.106,0866,0065,968
17157Randolph CountyChester1,546.9033,89333,47633,361
17159Richland CountyOlney937.6016,14916,23316,230
17161Rock Island CountyRock Island1,168.50149,374147,546147,556
17163Saint Clair CountyBelleville1,002.27256,082270,056270,259
17165Saline CountyHarrisburg2,271.4526,73324,91324,981
17167Sangamon CountySpringfield1,143.19188,951197,465198,844
17169Schuyler CountyRushville654.677,1897,5447,479
17171Scott CountyWinchester1,989.245,5375,3555,271
17173Shelby CountyShelbyville1,745.5222,89322,36322,212
17175Stark CountyToulon746.466,3325,9945,667
17177Stephenson CountyFreeport1,462.6248,97947,71147,563
17179Tazewell CountyPekin1,703.93128,485135,394135,661
17181Union CountyJonesboro1,093.3118,29317,80817,708
17183Vermilion CountyDanville2,336.5383,91981,62581,509
17185Wabash CountyMount Carmel589.9012,93711,94711,834
17187Warren CountyMonmouth1,406.8018,73517,70717,818
17189Washington CountyNashville1,461.0615,14814,71614,533
17191Wayne CountyFairfield1,853.2917,15116,76016,651
17193White CountyCarmi1,299.4015,37114,66514,663
17195Whiteside CountyMorrison1,805.2560,65358,49858,388
17197Will CountyJoliet2,199.91502,266677,560681,545
17199Williamson CountyMarion1,150.9461,29666,35766,622
17201Winnebago CountyRockford1,344.90278,418295,266293,993
17203Woodford CountyEureka1,405.6935,46938,66438,861
 total 149,997.5612,419,29312,830,63212,869,257
source: Bureau of the Census, USA.

Main cities

namepopulation
1990-04-01
census		population
2000-04-01
census		population
2010-04-01
census		population
2011-07-01
estimate
Chicago2,783,7262,896,0162,695,5982,707,120
Aurora99,581142,990197,899199,672
Rockford139,426150,115152,871152,222
Joliet76,836106,221147,433148,402
Naperville85,351128,358141,853142,773
Springfield105,227111,454116,250117,076
Peoria113,504112,936115,007115,234
Elgin77,01094,487108,188109,104
Waukegan....89,07889,426
Cicero....83,89184,261
Champaign....81,05581,291
Bloomington....76,61077,071
Decatur....76,12276,096
Arlington Heights....75,10175,428
Evanston....74,48674,785
Schaumburg....74,22774,550
Bolingbrook....73,36673,802
Palatine....68,55768,858
Skokie....64,78465,066
Des Plaines....58,36458,617
Orland Park....56,76757,016
Tinley Park....56,70356,965
Oak Lawn....56,69056,937
Berwyn....56,65756,906
Mount Prospect....54,16754,403
Wheaton....52,89453,238
Normal....52,49752,772
Hoffman Estates....51,89552,124
Oak Park....51,87852,104
source: Bureau of the Census, USA.