Age and Sex in Illinois (State)

Age Structure#1

Percentage in each age cohort per year of age.1 Gray areas represent percentile bands from the states.
Scope: population of the United States, Illinois, and other states
Illinois
United States
Percentile:
0th - 100th
10th - 90th
20th - 80th
30th - 70th
40th - 60th
0.0%0.5%1.0%Count%85+80-8475-7970-7467-6965-6662-6460-6155-5950-5445-4940-4435-3930-3425-2922-24212018-1915-1710-145-90-4248,533249k1.934%1.93%230,415230k1.793%1.79%304,912305k2.373%2.37%423,909424k3.298%3.30%320,337320k2.493%2.49%255,991256k1.992%1.99%428,124428k3.331%3.33%321,669322k2.503%2.50%863,294863k6.717%6.72%910,072910k7.081%7.08%858,383858k6.679%6.68%838,686839k6.526%6.53%833,680834k6.487%6.49%888,274888k6.912%6.91%892,005892k6.941%6.94%533,275533k4.149%4.15%183,221183k1.426%1.43%181,238181k1.410%1.41%345,037345k2.685%2.68%520,622521k4.051%4.05%850,325850k6.616%6.62%829,477829k6.454%6.45%790,205790k6.149%6.15%
Count number of people in age cohort
% age cohort as a percentage of the total population
1normalized with respect to the number of years in each interval

Age and Sex#2

Percentage in each age cohort per year of age.1
Scope: population of the United States and Illinois
Female Male
United States
Illinois
Shaded bar tips show excess over facing bar.
0.5%0.0%0.5%Count%Senior2Older Adult3Younger Adult4College5Children6-0.165938%-0.053741%-0.177049%-0.048590%-0.219679%0.22%0.165938%0.177049%0.165938%0.17%1,784,0971.78M13.882%13.9%-0.644483%-0.024551%-0.639439%-0.027509%-0.669035%0.67%0.644483%0.639439%0.644483%0.64%4,220,2284.22M32.838%32.8%-0.675790%-0.662794%-0.675790%0.68%0.675790%0.008914%0.662794%0.011473%0.684704%0.68%3,147,2343.15M24.489%24.5%-0.674894%-0.690098%-0.674894%0.67%0.674894%0.030373%0.690098%0.036916%0.705267%0.71%709,496709k5.521%5.52%-0.633316%-0.627873%-0.633316%0.63%0.633316%0.026163%0.627873%0.028032%0.659480%0.66%2,990,6292.99M23.270%23.3%
Count number of people in age cohort
% age cohort as a percentage of the total population
1normalized with respect to the number of years in each interval 265+ 340-64 422-39 518-21 60-17

Detailed Age and Sex#3

Percentage in each age cohort per year of age.1
Scope: population of the United States and Illinois
Female Male
United States
Illinois
Shaded bar tips show excess over facing bar.
0.5%0.0%0.5%Count%85+80-8475-7970-7467-6965-6662-6460-6155-5950-5445-4940-4435-3930-3425-2922-24212018-1915-1710-145-90-4-0.039174%-0.042517%-0.040405%-0.038024%-0.081692%0.08%0.039174%0.040405%0.039174%0.04%248,533249k1.934%1.93%-0.144845%-0.068886%-0.151220%-0.063891%-0.213731%0.21%0.144845%0.151220%0.144845%0.14%230,415230k1.793%1.79%-0.203849%-0.066811%-0.220748%-0.056595%-0.270660%0.27%0.203849%0.220748%0.203849%0.20%304,912305k2.373%2.37%-0.300244%-0.059206%-0.319204%-0.054701%-0.359450%0.36%0.300244%0.319204%0.300244%0.30%423,909424k3.298%3.30%-0.387742%-0.055373%-0.421958%-0.052156%-0.443114%0.44%0.387742%0.421958%0.387742%0.39%320,337320k2.493%2.49%-0.469530%-0.056884%-0.502773%-0.054229%-0.526414%0.53%0.469530%0.502773%0.469530%0.47%255,991256k1.992%1.99%-0.534885%-0.040654%-0.541468%-0.051993%-0.575538%0.58%0.534885%0.541468%0.534885%0.53%428,124428k3.331%3.33%-0.604325%-0.042815%-0.599140%-0.045449%-0.647141%0.65%0.604325%0.599140%0.604325%0.60%321,669322k2.503%2.50%-0.651709%-0.040054%-0.647813%-0.041116%-0.691763%0.69%0.651709%0.647813%0.651709%0.65%863,294863k6.717%6.72%-0.695837%-0.024594%-0.688902%-0.025961%-0.720432%0.72%0.695837%0.688902%0.695837%0.70%910,072910k7.081%7.08%-0.661607%-0.012616%-0.655595%-0.013619%-0.674223%0.67%0.661607%0.655595%0.661607%0.66%858,383858k6.679%6.68%-0.650601%-0.003975%-0.640349%-0.007471%-0.654576%0.65%0.650601%0.640349%0.650601%0.65%838,686839k6.526%6.53%-0.647538%-0.002309%-0.626779%-0.004019%-0.649848%0.65%0.647538%0.626779%0.647538%0.65%833,680834k6.487%6.49%-0.690067%-0.669173%-0.690067%0.69%0.690067%0.002213%0.669173%0.005514%0.692280%0.69%888,274888k6.912%6.91%-0.685705%-0.680581%-0.685705%0.69%0.685705%0.016743%0.680581%0.019624%0.702448%0.70%892,005892k6.941%6.94%-0.678707%-0.675846%-0.678707%0.68%0.678707%0.025737%0.675846%0.033642%0.704445%0.70%533,275533k4.149%4.15%-0.706227%-0.709599%-0.706227%0.71%0.706227%0.013204%0.709599%0.039633%0.719431%0.72%183,221183k1.426%1.43%-0.686439%-0.721323%-0.686439%0.69%0.686439%0.037349%0.721323%0.040945%0.723788%0.72%181,238181k1.410%1.41%-0.653455%-0.664734%-0.653455%0.65%0.653455%0.035470%0.664734%0.033543%0.688925%0.69%345,037345k2.685%2.68%-0.661483%-0.642594%-0.661483%0.66%0.661483%0.027369%0.642594%0.030383%0.688851%0.69%520,622521k4.051%4.05%-0.649229%-0.635182%-0.649229%0.65%0.649229%0.024833%0.635182%0.027016%0.674061%0.67%850,325850k6.616%6.62%-0.631827%-0.629799%-0.631827%0.63%0.631827%0.027192%0.629799%0.027976%0.659019%0.66%829,477829k6.454%6.45%-0.601994%-0.609806%-0.601994%0.60%0.601994%0.025741%0.609806%0.027693%0.627736%0.63%790,205790k6.149%6.15%
Count number of people in age cohort
% age cohort as a percentage of the total population
1normalized with respect to the number of years in each interval

Detailed Sex Ratio#4

Percentage more males or females in selected age cohorts.
Scope: population of the United States and Illinois
More Females More Males
United States
Illinois
100%50%0%M:FFM85+80-8475-7970-7467-6965-6662-6460-6155-5950-5445-4940-4435-3930-3425-2922-24212018-1915-1710-145-90-4-108.533512%-94.107784%-108.533512%108.5%0.4800.4867.589%67.6%32.411%32.4%-47.558421%-42.250155%-47.558421%47.6%0.6780.6859.605%59.6%40.395%40.4%-32.775021%-25.637895%-32.775021%32.8%0.7530.7557.040%57.0%42.960%43.0%-19.719383%-17.136703%-19.719383%19.7%0.8350.8454.487%54.5%45.513%45.5%-14.280841%-12.360556%-14.280841%14.3%0.8750.8853.332%53.3%46.668%46.7%-12.115010%-10.786056%-12.115010%12.1%0.8920.8952.856%52.9%47.144%47.1%-7.600436%-9.602216%-7.600436%7.6%0.9290.9351.831%51.8%48.169%48.2%-7.084825%-7.585728%-7.084825%7.1%0.9340.9351.711%51.7%48.289%48.3%-6.145977%-6.346862%-6.145977%6.1%0.9420.9451.491%51.5%48.509%48.5%-3.534511%-3.768485%-3.534511%3.5%0.9660.9750.868%50.9%49.132%49.1%-1.906910%-2.077397%-1.906910%1.9%0.9810.9850.472%50.5%49.528%49.5%-0.610908%-1.166734%-0.610908%0.6%0.9940.9950.152%50.2%49.848%49.8%-0.356647%-0.641232%-0.356647%0.4%0.9961.0050.089%50.1%49.911%49.9%0.320685%0.824044%0.320685%0.3%1.0031.0049.920%49.9%50.080%50.1%2.441770%2.883352%2.441770%2.4%1.0241.0249.397%49.4%50.603%50.6%3.792094%4.977745%3.792094%3.8%1.0381.0449.070%49.1%50.930%50.9%1.869725%5.585264%1.869725%1.9%1.0191.0249.537%49.5%50.463%50.5%5.441005%5.676433%5.441005%5.4%1.0541.0548.676%48.7%51.324%51.3%5.428078%5.046055%5.428078%5.4%1.0541.0548.679%48.7%51.321%51.3%4.137471%4.728170%4.137471%4.1%1.0411.0448.987%49.0%51.013%51.0%3.824931%4.253238%3.824931%3.8%1.0381.0449.062%49.1%50.938%50.9%4.303673%4.441989%4.303673%4.3%1.0431.0448.947%48.9%51.053%51.1%4.276016%4.541243%4.276016%4.3%1.0431.0448.953%49.0%51.047%51.0%
M:F ratio of males to females in the age cohort
F females as a percentage of the age cohort
M males as a percentage of the age cohort

Map of Age Cohorts by County in Illinois

Children Age Cohorts by County#5

Percentage of population aged 0 to 17 (%):
15.2%18.2%21.1%24.0%26.9%29.9%

College Age Cohorts by County#6

Percentage of population aged 18 to 21 (%):
3.1%6.1%9.0%11.9%14.8%17.7%

20s Age Cohorts by County#7

Percentage of population aged 22 to 29 (%):
4.9%7.6%10.2%12.8%15.4%18.1%

30s Age Cohorts by County#8

Percentage of population aged 30 to 39 (%):
8.1%10.1%12.1%14.0%15.9%17.9%

40s Age Cohorts by County#9

Percentage of population aged 40 to 49 (%):
9.0%10.5%11.9%13.3%14.7%16.1%

50s Age Cohorts by County#10

Percentage of population aged 50 to 59 (%):
10.8%12.3%13.7%15.2%16.6%18.1%

60s Age Cohorts by County#11

Percentage of population aged 60 to 69 (%):
7.1%9.3%11.5%13.6%15.8%18.0%

70s Age Cohorts by County#12

Percentage of population aged 70 to 79 (%):
4.2%6.0%7.6%9.3%11.0%12.7%

80+ Age Cohorts by County#13

Percentage of population aged 80 and older (%):
1.3%2.8%4.2%5.5%6.9%8.4%
Road Data ©OpenStreetMap

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Age Cohorts by Place in Illinois

There are 1,368 places in Illinois. This section compares the 50 most populous of those to each other, Illinois, and other entities that contain or substantially overlap with Illinois. The least populous of the compared places has a population of 37,567.

Children by Place#14

Percentage of population aged 0 to 17 (%):
Scope: population of Illinois, selected places in Illinois, and entities that contain Illinois
0%10%20%30%Count#CarpentersvillePlainfieldCiceroAuroraJolietRomeovilleBolingbrookElginWaukeganHanover ParkElmhurstNapervilleBartlettBerwynRockfordPeoriaGlenviewPark RidgeCrystal LakePalatineOak ParkMount ProspectMt ProspectHoffman EstatesHoffman EstsWheatonStreamwoodIllinoisMidwestUnited States of AmericaUnited StatesBloomingtonEast North CentralCarol StreamWheelingMolineQuincySpringfieldBuffalo GroveBellevilleTinley ParkDowners GroveDecaturChicagoRock IslandSkokieOak LawnArlington HeightsArlington HtsSchaumburgLombardDes PlainesOrland ParkEvanstonDeKalbNormalChampaignUrbana32.807315%32.807315%32.8%12,55712.6k132.785750%32.785750%32.8%13,73113.7k231.658172%31.658172%31.7%26,58426.6k330.107463%30.107463%30.1%60,48860.5k428.547605%28.547605%28.5%42,11242.1k528.163769%28.163769%28.2%11,19211.2k627.997847%27.997847%28.0%20,80820.8k727.918405%27.918405%27.9%31,24631.2k827.884844%27.884844%27.9%24,58324.6k927.330359%27.330359%27.3%10,47610.5k1026.605745%26.605745%26.6%12,17012.2k1126.450555%26.450555%26.5%38,56238.6k1226.160338%26.160338%26.2%10,85010.9k1325.812742%25.812742%25.8%14,56214.6k1425.506528%25.506528%25.5%38,15738.2k1525.069403%25.069403%25.1%29,07829.1k1624.972615%24.972615%25.0%11,62711.6k1724.846275%24.846275%24.8%9,3341824.565781%24.565781%24.6%9,9431924.138181%24.138181%24.1%16,67916.7k2023.980073%23.980073%24.0%12,46712.5k2123.599501%23.599501%23.6%12,87412.9k2223.573762%23.573762%23.6%12,19412.2k2323.388964%23.388964%23.4%12,52912.5k2423.345334%23.345334%23.3%9,4672523.270328%23.270328%23.3%2,990,6292.99M23.217458%23.217458%23.2%15,712,75815.7M23.108006%23.108006%23.1%73,612,43873.6M23.085953%23.085953%23.1%18,09218.1k2623.005234%23.005234%23.0%10,741,74210.7M22.777667%22.777667%22.8%9,1632722.758367%22.758367%22.8%8,6502822.700619%22.700619%22.7%9,7172922.517142%22.517142%22.5%9,1623022.468628%22.468628%22.5%26,23126.2k3122.438273%22.438273%22.4%9,3243222.413349%22.413349%22.4%9,5773322.305470%22.305470%22.3%12,74212.7k3422.231864%22.231864%22.2%11,01711.0k3522.208120%22.208120%22.2%16,44816.4k3621.913385%21.913385%21.9%594,733595k3721.771418%21.771418%21.8%8,4143821.693154%21.693154%21.7%14,07314.1k3921.405925%21.405925%21.4%12,15312.2k4021.253021%21.253021%21.3%16,09316.1k4120.705699%20.705699%20.7%15,39815.4k4220.377058%20.377058%20.4%8,9714320.117437%20.117437%20.1%11,82011.8k4420.098273%20.098273%20.1%11,78011.8k4519.975620%19.975620%20.0%15,07615.1k4618.948901%18.948901%18.9%8,1994718.221660%18.221660%18.2%9,9374816.510771%16.510771%16.5%13,98014.0k4912.400753%12.400753%12.4%5,20150
Count number of children
# rank of place out of 50 by %

Age Cohorts by Metro Area in Illinois

There are 33 metro areas that are fully or partially contained within Illinois (25 fully and 8 partially). This section compares all 33 of those to each other, Illinois, and other entities that contain or substantially overlap with Illinois.

Children by Metro Area#23

Percentage of population aged 0 to 17 (%):
Scope: population of Illinois, selected metro areas in Illinois, and entities that contain Illinois
0%5%10%15%20%Count#Rockford Metro AreaRockford AreaKankakee Metro AreaKankakee AreaDanville Metro AreaDanville AreaChicago, Naperville, and Elgin Metro AreaChicago AreaEffingham Metro AreaEffinghamPeoria Metro AreaPeoria AreaIllinoisMidwestDavenport, Moline, and Rock Island Metro AreaDavenportUnited States of AmericaUnited StatesRochelle Metro AreaRochelle AreaEast North CentralSpringfield Metro AreaSpringfieldCentralia Metro AreaCentraliaSt. Louis Metro AreaSt. LouisSterling Metro AreaSterling AreaQuincy Metro AreaQuincy AreaDecatur Metro AreaDecatur AreaBurlington Metro AreaBurlingtonBloomington Metro AreaBloomingtonOttawa and Peru Metro AreaOttawa AreaMount Vernon Metro AreaMount VernonPontiac Metro AreaPontiac AreaPaducah Metro AreaPaducah AreaCape Girardeau Metro AreaCape GirardeauFreeport Metro AreaFreeport AreaFort Madison and Keokuk Metro AreaFort MadisonTaylorville Metro AreaTaylorvilleCanton Metro AreaCanton AreaDixon Metro AreaDixon AreaJacksonville Metro AreaJacksonvilleCarbondale and Marion Metro AreaCarbondaleGalesburg Metro AreaGalesburgChampaign and Urbana Metro AreaChampaignCharleston and Mattoon Metro AreaCharlestonLincoln Metro AreaLincoln AreaMacomb Metro AreaMacomb Area24.338203%24.338203%24.3%83,37183.4k124.139632%24.139632%24.1%26,91426.9k223.988545%23.988545%24.0%19,09819.1k323.818290%23.818290%23.8%2,269,5012.27M423.786238%23.786238%23.8%8,172523.569973%23.569973%23.6%89,38789.4k623.270328%23.270328%23.3%2,990,6292.99M23.217458%23.217458%23.2%15,712,75815.7M23.181078%23.181078%23.2%88,85488.9k723.108006%23.108006%23.1%73,612,43873.6M23.106046%23.106046%23.1%12,02312.0k823.005234%23.005234%23.0%10,741,74210.7M22.922141%22.922141%22.9%48,41548.4k922.909903%22.909903%22.9%8,8211022.816573%22.816573%22.8%639,651640k1122.725921%22.725921%22.7%12,98913.0k1222.677216%22.677216%22.7%17,48317.5k1322.375558%22.375558%22.4%24,25624.3k1422.347069%22.347069%22.3%10,52110.5k1522.008588%22.008588%22.0%41,72341.7k1621.949400%21.949400%21.9%33,25433.3k1721.934948%21.934948%21.9%8,4501821.838618%21.838618%21.8%8,1411921.798780%21.798780%21.8%21,30721.3k2021.714808%21.714808%21.7%21,15521.2k2121.714236%21.714236%21.7%10,05010.1k2221.569274%21.569274%21.6%13,08513.1k2321.211048%21.211048%21.2%7,1882420.256887%20.256887%20.3%7,3022520.179734%20.179734%20.2%7,0062620.165124%20.165124%20.2%8,0602720.099744%20.099744%20.1%25,43125.4k2819.904545%19.904545%19.9%10,30110.3k2919.511762%19.511762%19.5%46,17446.2k3018.886202%18.886202%18.9%12,02912.0k3118.705567%18.705567%18.7%5,5783216.623066%16.623066%16.6%5,27433
Count number of children
# rank of metro area out of 33 by %

Age Cohorts by County in Illinois

There are 102 counties in Illinois. This section compares the 50 most populous of those to each other, Illinois, and other entities that contain or substantially overlap with Illinois. The least populous of the compared counties has a population of 29,301.

Children by County#32

Percentage of population aged 0 to 17 (%):
Scope: population of Illinois, selected counties in Illinois, and entities that contain Illinois
0%10%20%Count#Kendall CountyKendallKane CountyKaneWill CountyWillBoone CountyBooneGrundy CountyGrundyLake CountyLakeMcHenry CountyMcHenryWoodford CountyWoodfordKankakee CountyKankakeeSt. Clair CountySt. ClairVermilion CountyVermilionWinnebago CountyWinnebagoPeoria CountyPeoriaEffingham CountyEffinghamDuPage CountyDuPageIllinoisMidwestUnited States of AmericaUnited StatesOgle CountyOgleTazewell CountyTazewellMonroe CountyMonroeEast North CentralSangamon CountySangamonMarion CountyMarionHenry CountyHenryWhiteside CountyWhitesideCook CountyCookAdams CountyAdamsRock Island CountyRock IslandMacon CountyMaconMadison CountyMadisonFranklin CountyFranklinMcLean CountyMcLeanBureau CountyBureauLaSalle CountyLaSalleJefferson CountyJeffersonDeKalb CountyDeKalbWilliamson CountyWilliamsonLivingston CountyLivingstonStephenson CountyStephensonMacoupin CountyMacoupinClinton CountyClintonChristian CountyChristianFulton CountyFultonLee CountyLeeMontgomery CountyMontgomeryKnox CountyKnoxMorgan CountyMorganRandolph CountyRandolphChampaign CountyChampaignLogan CountyLoganJackson CountyJacksonColes CountyColesMcDonough CountyMcDonough29.816718%29.816718%29.8%36,21336.2k127.145638%27.145638%27.1%142,953143k226.688338%26.688338%26.7%182,916183k326.487252%26.487252%26.5%14,21214.2k425.888990%25.888990%25.9%13,03213.0k525.491471%25.491471%25.5%179,177179k625.044369%25.044369%25.0%76,90776.9k724.995527%24.995527%25.0%9,779824.139632%24.139632%24.1%26,91426.9k924.119532%24.119532%24.1%64,05464.1k1023.988545%23.988545%24.0%19,09819.1k1123.939065%23.939065%23.9%69,15969.2k1223.908296%23.908296%23.9%44,66544.7k1323.786238%23.786238%23.8%8,1721423.510769%23.510769%23.5%218,771219k1523.270328%23.270328%23.3%2,990,6292.99M23.217458%23.217458%23.2%15,712,75815.7M23.108006%23.108006%23.1%73,612,43873.6M23.106046%23.106046%23.1%12,02312.0k1623.090103%23.090103%23.1%31,26431.3k1723.045426%23.045426%23.0%7,7671823.005234%23.005234%23.0%10,741,74210.7M22.937590%22.937590%22.9%45,56345.6k1922.909903%22.909903%22.9%8,8212022.869910%22.869910%22.9%11,36211.4k2122.725921%22.725921%22.7%12,98913.0k2222.694997%22.694997%22.7%1,186,3981.19M2322.679950%22.679950%22.7%15,18415.2k2422.397909%22.397909%22.4%32,82132.8k2522.375558%22.375558%22.4%24,25624.3k2622.230928%22.230928%22.2%59,30359.3k2722.195783%22.195783%22.2%8,7682822.028929%22.028929%22.0%38,16638.2k2922.024126%22.024126%22.0%7,4493022.019029%22.019029%22.0%24,64724.6k3121.934948%21.934948%21.9%8,4503221.895882%21.895882%21.9%22,87222.9k3321.872401%21.872401%21.9%14,72814.7k3421.838618%21.838618%21.8%8,1413521.714236%21.714236%21.7%10,05010.1k3621.668603%21.668603%21.7%10,07210.1k3721.374610%21.374610%21.4%8,0923821.211048%21.211048%21.2%7,1883920.256887%20.256887%20.3%7,3024020.179734%20.179734%20.2%7,0064120.053923%20.053923%20.1%5,8764219.904545%19.904545%19.9%10,30110.3k4319.809776%19.809776%19.8%6,8944419.274913%19.274913%19.3%6,3484519.025773%19.025773%19.0%39,27339.3k4618.705567%18.705567%18.7%5,5784718.083057%18.083057%18.1%10,70310.7k4818.040983%18.040983%18.0%9,5264916.623066%16.623066%16.6%5,27450
Count number of children
# rank of county out of 50 by %

Age Cohorts by County Subdivision in Illinois

There are 1,710 county subdivisions in Illinois. This section compares the 50 most populous of those to each other, Illinois, and other entities that contain or substantially overlap with Illinois. The least populous of the compared county subdivisions has a population of 54,812.

Children by County Subdivision#41

Percentage of population aged 0 to 17 (%):
Scope: population of Illinois, selected county subdivisions in Illinois, and entities that contain Illinois
0%10%20%30%Count#Wheatland TownshipWheatlandCicero TownshipCiceroPlainfield TownshipPlainfieldNew Trier TownshipNew TrierAurora TownshipAuroraDundee TownshipDundeeAvon TownshipWaukegan TownshipWaukeganJoliet TownshipJolietElgin TownshipElginDu Page TownshipDu PageWarren TownshipWarrenHanover TownshipHanoverBerwyn TownshipBerwynFrankfort TownshipFrankfortNaperville TownshipNapervilleLyons TownshipLyonsBloom TownshipBloomThornton TownshipThorntonWayne TownshipWaynePeoria City TownshipPeoria CityRockford TownshipRockfordMilton TownshipMiltonAlgonquin TownshipAlgonquinBremen TownshipBremenNorthfield TownshipNorthfieldVernon TownshipVernonPalatine TownshipPalatineAddison TownshipAddisonProviso TownshipProvisoDowners Grove TownshipDowners GrvIllinoisMidwestUnited States of AmericaUnited StatesBloomington City TownshipBloomington CityWorth TownshipWorthEast North CentralElk Grove TownshipElk GrvBloomingdale TownshipBloomingdaleCapital TownshipCapitalRich TownshipLisle TownshipLisleWheeling TownshipWheelingYork TownshipSchaumburg TownshipSchaumburgLeyden TownshipLeydenChicagoLockport TownshipLockportOrland TownshipOrlandPalos TownshipPalosMaine TownshipMaineNiles TownshipNilesEvanston TownshipEvanstonChampaign City TownshipChampaign City32.540310%32.540310%32.5%27,16427.2k131.658172%31.658172%31.7%26,58426.6k230.577742%30.577742%30.6%24,92324.9k330.525041%30.525041%30.5%17,14517.1k428.976809%28.976809%29.0%42,91942.9k528.492661%28.492661%28.5%18,65518.7k628.335007%28.335007%28.3%18,33718.3k728.206492%28.206492%28.2%25,46225.5k827.063219%27.063219%27.1%23,68623.7k926.986524%26.986524%27.0%27,87627.9k1026.906032%26.906032%26.9%23,80023.8k1126.817971%26.817971%26.8%17,31117.3k1226.606278%26.606278%26.6%26,81726.8k1325.812742%25.812742%25.8%14,56214.6k1425.642300%25.642300%25.6%14,96115.0k1525.626402%25.626402%25.6%26,15226.2k1625.549207%25.549207%25.5%28,79628.8k1725.161220%25.161220%25.2%22,94222.9k1824.478487%24.478487%24.5%41,48141.5k1924.326292%24.326292%24.3%16,37516.4k2024.303147%24.303147%24.3%25,43325.4k2124.130412%24.130412%24.1%42,05442.1k2224.117607%24.117607%24.1%28,56228.6k2324.043747%24.043747%24.0%21,03921.0k2424.034835%24.034835%24.0%26,57726.6k2523.992170%23.992170%24.0%20,83620.8k2623.736202%23.736202%23.7%16,06316.1k2723.596819%23.596819%23.6%26,85226.9k2823.499665%23.499665%23.5%21,05121.1k2923.475670%23.475670%23.5%35,61435.6k3023.327643%23.327643%23.3%34,71234.7k3123.270328%23.270328%23.3%2,990,6292.99M23.217458%23.217458%23.2%15,712,75815.7M23.108006%23.108006%23.1%73,612,43873.6M23.085953%23.085953%23.1%18,09218.1k3223.039530%23.039530%23.0%35,21535.2k3323.005234%23.005234%23.0%10,741,74210.7M22.649889%22.649889%22.6%21,11421.1k3422.578243%22.578243%22.6%25,47325.5k3522.459425%22.459425%22.5%26,15426.2k3622.456026%22.456026%22.5%17,29917.3k3722.348361%22.348361%22.3%26,63526.6k3822.283587%22.283587%22.3%34,53834.5k3922.227271%22.227271%22.2%27,88327.9k4022.157443%22.157443%22.2%29,26429.3k4122.060502%22.060502%22.1%20,49220.5k4221.913385%21.913385%21.9%594,733595k4321.813644%21.813644%21.8%13,11013.1k4420.845110%20.845110%20.8%20,72420.7k4520.820258%20.820258%20.8%11,41211.4k4620.781276%20.781276%20.8%28,36028.4k4720.775208%20.775208%20.8%22,05622.1k4819.975620%19.975620%20.0%15,07615.1k4916.510771%16.510771%16.5%13,98014.0k50
Count number of children
# rank of county subdivision out of 50 by %

Age Cohorts by State in the United States

There are 50 states in the United States. This section compares Illinois to all of the states in the United States and to those entities that contain or substantially overlap with Illinois.

Children by State#50

Percentage of population aged 0 to 17 (%):
Scope: population of Illinois, selected other states in the United States, and entities that contain Illinois
0%10%20%30%Count#UtahTexasIdahoAlaskaKansasNebraskaGeorgiaSouth DakotaOklahomaMississippiNew MexicoArizonaIndianaLouisianaArkansasWyomingCaliforniaMinnesotaIowaNevadaIllinoisColoradoMidwestUnited States of AmericaUnited StatesMissouriNorth CarolinaN CarolinaEast North CentralKentuckyTennesseeAlabamaOhioNorth DakotaWashingtonWisconsinMarylandNew JerseyMichiganSouth CarolinaS CarolinaVirginiaMontanaDelawareHawaiiOregonConnecticutNew YorkPennsylvaniaMassachusettsWest VirginiaFloridaRhode IslandNew HampshireMaineVermont30.700981%30.700981%30.7%905,196905k126.459270%26.459270%26.5%7,132,4767.13M226.372637%26.372637%26.4%431,320431k325.461726%25.461726%25.5%187,616188k424.888693%24.888693%24.9%721,347721k524.855748%24.855748%24.9%467,601468k624.706366%24.706366%24.7%2,495,1752.50M724.629931%24.629931%24.6%209,615210k824.572394%24.572394%24.6%952,325952k924.496085%24.496085%24.5%732,235732k1024.091682%24.091682%24.1%501,750502k1124.070736%24.070736%24.1%1,619,6181.62M1224.007486%24.007486%24.0%1,581,9921.58M1323.979792%23.979792%24.0%1,114,0221.11M1423.824850%23.824850%23.8%707,234707k1523.814253%23.814253%23.8%138,844139k1623.646283%23.646283%23.6%9,140,2839.14M1723.520988%23.520988%23.5%1,282,0981.28M1823.418418%23.418418%23.4%727,514728k1923.409360%23.409360%23.4%664,632665k2023.270328%23.270328%23.3%2,990,6292.99M2123.252704%23.252704%23.3%1,246,1811.25M2223.217458%23.217458%23.2%15,712,75815.7M23.108006%23.108006%23.1%73,612,43873.6M23.023174%23.023174%23.0%1,395,1241.40M2323.014441%23.014441%23.0%2,287,8262.29M2423.005234%23.005234%23.0%10,741,74210.7M22.987138%22.987138%23.0%1,014,1901.01M2522.830222%22.830222%22.8%1,494,9251.49M2622.828993%22.828993%22.8%1,105,1891.11M2722.783062%22.783062%22.8%2,639,8602.64M2822.782621%22.782621%22.8%167,717168k2922.685733%22.685733%22.7%1,604,5951.60M3022.615876%22.615876%22.6%1,301,4981.30M3122.614634%22.614634%22.6%1,347,8101.35M3222.543020%22.543020%22.5%2,009,8132.01M3322.480857%22.480857%22.5%2,227,7632.23M3422.458484%22.458484%22.5%1,085,7791.09M3522.448718%22.448718%22.4%1,865,5561.87M3621.987686%21.987686%22.0%225,020225k3721.845843%21.845843%21.8%204,192204k3821.802496%21.802496%21.8%308,216308k3921.630770%21.630770%21.6%861,395861k4021.558782%21.558782%21.6%773,652774k4121.456623%21.456623%21.5%4,226,4094.23M4221.153574%21.153574%21.2%2,704,2682.70M4320.624778%20.624778%20.6%1,390,5521.39M4420.575789%20.575789%20.6%379,848380k4520.398234%20.398234%20.4%4,066,2764.07M4620.142988%20.142988%20.1%212,406212k4720.111367%20.111367%20.1%266,979267k4819.512483%19.512483%19.5%259,501260k4919.431728%19.431728%19.4%121,691122k50
Count number of children
# rank of state out of 50 by %

Age Cohorts by State in the Midwest

There are 12 states in the Midwest. This section compares Illinois to all of the states in the Midwest and to those entities that contain or substantially overlap with Illinois.

Children by State#59

Percentage of population aged 0 to 17 (%):
Scope: population of Illinois, selected other states in the Midwest, and entities that contain Illinois
0%5%10%15%20%Count#KansasNebraskaSouth DakotaIndianaMinnesotaIowaIllinoisMidwestUnited States of AmericaUnited StatesMissouriEast North CentralOhioNorth DakotaWisconsinMichigan24.888693%24.888693%24.9%721,347721k124.855748%24.855748%24.9%467,601468k224.629931%24.629931%24.6%209,615210k324.007486%24.007486%24.0%1,581,9921.58M423.520988%23.520988%23.5%1,282,0981.28M523.418418%23.418418%23.4%727,514728k623.270328%23.270328%23.3%2,990,6292.99M723.217458%23.217458%23.2%15,712,75815.7M23.108006%23.108006%23.1%73,612,43873.6M23.023174%23.023174%23.0%1,395,1241.40M823.005234%23.005234%23.0%10,741,74210.7M22.783062%22.783062%22.8%2,639,8602.64M922.782621%22.782621%22.8%167,717168k1022.615876%22.615876%22.6%1,301,4981.30M1122.480857%22.480857%22.5%2,227,7632.23M12
Count number of children
# rank of state out of 12 by %

Definitions

The US Census reports extensively on the topics of age and sex, often reporting other topics broken down by age and sex cohorts. This page reports on age and sex alone; charts presenting other topics by age and sex can be found on their topic-specific pages.

  • Children: less than 18 years old
  • College: from 18 to 21 years old
  • 20s: from 22 to 29 years old, to not overlap the college category
  • Younger Adult: from 22 to 39 years old
  • Older Adult: from 40 to 64 years old
  • Senior: more than 64 years old

For additional information about the data presented on this site, including our sources, please see the About Page.

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Major Counties:
Champaign, Cook, DuPage, Kane, Lake, Madison, McHenry, McLean, Peoria, Rock Island, Sangamon, St. Clair, Tazewell, Will, Winnebago
Counties:
Adams, Alexander, Bond, Boone, Brown, Bureau, Calhoun, Carroll, Cass, Champaign, Christian, Clark, Clay, Clinton, Coles, Cook, Crawford, Cumberland, De Witt, DeKalb, Douglas, DuPage, Edgar, Edwards, Effingham, Fayette, Ford, Franklin, Fulton, Gallatin, Greene, Grundy, Hamilton, Hancock, Hardin, Henderson, Henry, Iroquois, Jackson, Jasper, Jefferson, Jersey, Jo Daviess, Johnson, Kane, Kankakee, Kendall, Knox, LaSalle, Lake, Lawrence, Lee, Livingston, Logan, Macon, Macoupin, Madison, Marion, Marshall, Mason, Massac, McDonough, McHenry, McLean, Menard, Mercer, Monroe, Montgomery, Morgan, Moultrie, Ogle, Peoria, Perry, Piatt, Pike, Pope, Pulaski, Putnam, Randolph, Richland, Rock Island, Saline, Sangamon, Schuyler, Scott, Shelby, St. Clair, Stark, Stephenson, Tazewell, Union, Vermilion, Wabash, Warren, Washington, Wayne, White, Whiteside, Will, Williamson, Winnebago, Woodford
Metro Areas:
Bloomington Area, Burlington Area, Canton Area, Cape Girardeau Area, Carbondale Area, Centralia Area, Champaign Area, Charleston Area, Chicago Area, Danville Area, Davenport Area, Decatur Area, Dixon Area, Effingham Area, Fort Madison Area, Freeport Area, Galesburg Area, Jacksonville Area, Kankakee Area, Lincoln Area, Macomb Area, Mount Vernon Area, Ottawa Area, Paducah Area, Peoria Area, Pontiac Area, Quincy Area, Rochelle Area, Rockford Area, Springfield Area, St. Louis Area, Sterling Area, Taylorville Area
Major Cities:
Aurora, Belleville, Berwyn, Bloomington, Champaign, Chicago, Crystal Lake, DeKalb, Decatur, Des Plaines, Elgin, Elmhurst, Evanston, Joliet, Moline, Naperville, Park Ridge, Peoria, Quincy, Rock Island, Rockford, Springfield, Urbana, Waukegan, Wheaton
Major Towns:
Cicero, Normal
Major Villages:
Arlington Heights, Bartlett, Bolingbrook, Buffalo Grove, Carol Stream, Carpentersville, Downers Grove, Glenview, Hanover Park, Hoffman Estates, Lombard, Mount Prospect, Oak Lawn, Oak Park, Orland Park, Palatine, Plainfield, Romeoville, Schaumburg, Skokie, Streamwood, Tinley Park, Wheeling
Congressional Districts:
IL-1, IL-2, IL-3, IL-4, IL-5, IL-6, IL-7, IL-8, IL-9, IL-10, IL-11, IL-12, IL-13, IL-14, IL-15, IL-16, IL-17, IL-18
State House Districts:
IL-1, IL-2, IL-3, IL-4, IL-5, IL-6, IL-7, IL-8, IL-9, IL-10, IL-11, IL-12, IL-13, IL-14, IL-15, IL-16, IL-17, IL-18, IL-19, IL-20, IL-21, IL-22, IL-23, IL-24, IL-25, IL-26, IL-27, IL-28, IL-29, IL-30, IL-31, IL-32, IL-33, IL-34, IL-35, IL-36, IL-37, IL-38, IL-39, IL-40, IL-41, IL-42, IL-43, IL-44, IL-45, IL-46, IL-47, IL-48, IL-49, IL-50, IL-51, IL-52, IL-53, IL-54, IL-55, IL-56, IL-57, IL-58, IL-59, IL-60, IL-61, IL-62, IL-63, IL-64, IL-65, IL-66, IL-67, IL-68, IL-69, IL-70, IL-71, IL-72, IL-73, IL-74, IL-75, IL-76, IL-77, IL-78, IL-79, IL-80, IL-81, IL-82, IL-83, IL-84, IL-85, IL-86, IL-87, IL-88, IL-89, IL-90, IL-91, IL-92, IL-93, IL-94, IL-95, IL-96, IL-97, IL-98, IL-99, IL-100, IL-101, IL-102, IL-103, IL-104, IL-105, IL-106, IL-107, IL-108, IL-109, IL-110, IL-111, IL-112, IL-113, IL-114, IL-115, IL-116, IL-117, IL-118
State Senate Districts:
IL-1, IL-2, IL-3, IL-4, IL-5, IL-6, IL-7, IL-8, IL-9, IL-10, IL-11, IL-12, IL-13, IL-14, IL-15, IL-16, IL-17, IL-18, IL-19, IL-20, IL-21, IL-22, IL-23, IL-24, IL-25, IL-26, IL-27, IL-28, IL-29, IL-30, IL-31, IL-32, IL-33, IL-34, IL-35, IL-36, IL-37, IL-38, IL-39, IL-40, IL-41, IL-42, IL-43, IL-44, IL-45, IL-46, IL-47, IL-48, IL-49, IL-50, IL-51, IL-52, IL-53, IL-54, IL-55, IL-56, IL-57, IL-58, IL-59
Neighboring States:
Indiana, Iowa, Kentucky, Michigan, Missouri, Wisconsin