Age and Sex in Cook County, Illinois (County)

Age Structure#1

Percentage in each age cohort per year of age.1 Gray areas represent percentile bands from the counties in Illinois.
Scope: population of Illinois, Cook County, and other counties in Illinois
Cook County
Illinois
Percentile:
0th - 100th
10th - 90th
20th - 80th
30th - 70th
40th - 60th
0.0%0.5%1.0%1.5%Count%85+80-8475-7970-7467-6965-6662-6460-6155-5950-5445-4940-4435-3930-3425-2922-24212018-1915-1710-145-90-495,00495.0k1.817%1.82%89,57089.6k1.713%1.71%115,634116k2.212%2.21%158,974159k3.041%3.04%121,929122k2.332%2.33%96,54896.5k1.847%1.85%165,869166k3.173%3.17%124,675125k2.385%2.38%332,941333k6.369%6.37%348,699349k6.670%6.67%337,612338k6.458%6.46%345,199345k6.603%6.60%363,315363k6.950%6.95%415,246415k7.943%7.94%435,473435k8.330%8.33%226,449226k4.332%4.33%69,75469.8k1.334%1.33%67,87467.9k1.298%1.30%130,412130k2.495%2.49%198,811199k3.803%3.80%326,191326k6.240%6.24%326,547327k6.247%6.25%334,849335k6.405%6.41%
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 Illinois and Cook County
Female Male
Illinois
Cook County
Shaded bar tips show excess over facing bar.
0.5%0.0%0.5%Count%Senior2Older Adult3Younger Adult4College5Children6-0.149824%-0.060440%-0.165938%-0.053741%-0.210264%0.21%0.149824%0.165938%0.149824%0.15%677,659678k12.963%13.0%-0.613484%-0.039389%-0.644483%-0.024551%-0.652873%0.65%0.613484%0.644483%0.613484%0.61%1,654,9951.65M31.659%31.7%-0.757512%-0.015836%-0.675790%-0.773348%0.77%0.757512%0.675790%0.008914%0.757512%0.76%1,440,4831.44M27.555%27.6%-0.631210%-0.674894%-0.631210%0.63%0.631210%0.019435%0.674894%0.030373%0.650646%0.65%268,040268k5.127%5.13%-0.620394%-0.633316%-0.620394%0.62%0.620394%0.020045%0.633316%0.026163%0.640439%0.64%1,186,3981.19M22.695%22.7%
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 Illinois and Cook County
Female Male
Illinois
Cook County
Shaded bar tips show excess over facing bar.
0.5%0.0%0.5%Count%85+80-8475-7970-7467-6965-6662-6460-6155-5950-5445-4940-4435-3930-3425-2922-24212018-1915-1710-145-90-4-0.036280%-0.041025%-0.039174%-0.042517%-0.077305%0.08%0.036280%0.039174%0.036280%0.04%95,00495.0k1.817%1.82%-0.134946%-0.072791%-0.144845%-0.068886%-0.207737%0.21%0.134946%0.144845%0.134946%0.13%89,57089.6k1.713%1.71%-0.181212%-0.079976%-0.203849%-0.066811%-0.261188%0.26%0.181212%0.203849%0.181212%0.18%115,634116k2.212%2.21%-0.264363%-0.079486%-0.300244%-0.059206%-0.343850%0.34%0.264363%0.300244%0.264363%0.26%158,974159k3.041%3.04%-0.355818%-0.065837%-0.387742%-0.055373%-0.421655%0.42%0.355818%0.387742%0.355818%0.36%121,929122k2.332%2.33%-0.421563%-0.080324%-0.469530%-0.056884%-0.501887%0.50%0.421563%0.469530%0.421563%0.42%96,54896.5k1.847%1.85%-0.496725%-0.064204%-0.534885%-0.040654%-0.560929%0.56%0.496725%0.534885%0.496725%0.50%165,869166k3.173%3.17%-0.561608%-0.069258%-0.604325%-0.042815%-0.630866%0.63%0.561608%0.604325%0.561608%0.56%124,675125k2.385%2.38%-0.605141%-0.063506%-0.651709%-0.040054%-0.668647%0.67%0.605141%0.651709%0.605141%0.61%332,941333k6.369%6.37%-0.647593%-0.038890%-0.695837%-0.024594%-0.686483%0.69%0.647593%0.695837%0.647593%0.65%348,699349k6.670%6.67%-0.635170%-0.021318%-0.661607%-0.012616%-0.656488%0.66%0.635170%0.661607%0.635170%0.64%337,612338k6.458%6.46%-0.656840%-0.007005%-0.650601%-0.003975%-0.663845%0.66%0.656840%0.650601%0.656840%0.66%345,199345k6.603%6.60%-0.687026%-0.015942%-0.647538%-0.002309%-0.702968%0.70%0.687026%0.647538%0.687026%0.69%363,315363k6.950%6.95%-0.788932%-0.010812%-0.690067%-0.799744%0.80%0.788932%0.690067%0.002213%0.788932%0.79%415,246415k7.943%7.94%-0.826238%-0.013586%-0.685705%-0.839823%0.84%0.826238%0.685705%0.016743%0.826238%0.83%435,473435k8.330%8.33%-0.708078%-0.027782%-0.678707%-0.735861%0.74%0.708078%0.678707%0.025737%0.708078%0.71%226,449226k4.332%4.33%-0.663635%-0.706227%-0.663635%0.66%0.663635%0.007078%0.706227%0.013204%0.670713%0.67%69,75469.8k1.334%1.33%-0.630962%-0.686439%-0.630962%0.63%0.630962%0.036461%0.686439%0.037349%0.667422%0.67%67,87467.9k1.298%1.30%-0.615123%-0.653455%-0.615123%0.62%0.615123%0.017102%0.653455%0.035470%0.632224%0.63%130,412130k2.495%2.49%-0.626186%-0.661483%-0.626186%0.63%0.626186%0.015335%0.661483%0.027369%0.641521%0.64%198,811199k3.803%3.80%-0.609812%-0.649229%-0.609812%0.61%0.609812%0.028338%0.649229%0.024833%0.638151%0.64%326,191326k6.240%6.24%-0.619526%-0.631827%-0.619526%0.62%0.619526%0.010272%0.631827%0.027192%0.629799%0.63%326,547327k6.247%6.25%-0.628368%-0.601994%-0.628368%0.63%0.628368%0.024352%0.601994%0.025741%0.652719%0.65%334,849335k6.405%6.41%
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 Illinois and Cook County
More Females More Males
Illinois
Cook County
100%50%0%M:FFM85+80-8475-7970-7467-6965-6662-6460-6155-5950-5445-4940-4435-3930-3425-2922-24212018-1915-1710-145-90-4-113.079585%-108.533512%-113.079585%113.1%0.4690.4768.059%68.1%31.941%31.9%-53.940803%-47.558421%-53.940803%53.9%0.6500.6560.621%60.6%39.379%39.4%-44.133854%-32.775021%-44.133854%44.1%0.6940.6959.039%59.0%40.961%41.0%-30.067005%-19.719383%-30.067005%30.1%0.7690.7756.534%56.5%43.466%43.5%-18.502921%-14.280841%-18.502921%18.5%0.8440.8454.234%54.2%45.766%45.8%-19.053885%-12.115010%-19.053885%19.1%0.8400.8454.349%54.3%45.651%45.7%-12.925546%-7.600436%-12.925546%12.9%0.8860.8953.035%53.0%46.965%47.0%-12.332033%-7.084825%-12.332033%12.3%0.8900.8952.904%52.9%47.096%47.1%-10.494338%-6.145977%-10.494338%10.5%0.9050.9152.493%52.5%47.507%47.5%-6.005305%-3.534511%-6.005305%6.0%0.9430.9451.458%51.5%48.542%48.5%-3.356222%-1.906910%-3.356222%3.4%0.9680.9750.825%50.8%49.175%49.2%-1.066494%-0.610908%-1.066494%1.1%0.9890.9950.265%50.3%49.735%49.7%-2.320492%-0.356647%-2.320492%2.3%0.9770.9850.573%50.6%49.427%49.4%-1.370448%-1.370448%1.4%0.320685%0.9860.9950.340%50.3%49.660%49.7%-1.644278%-1.644278%1.6%2.441770%0.9840.9850.408%50.4%49.592%49.6%-3.923599%-3.923599%3.9%3.792094%0.9620.9650.962%51.0%49.038%49.0%1.066528%1.869725%1.066528%1.1%1.0111.0149.735%49.7%50.265%50.3%5.778559%5.441005%5.778559%5.8%1.0581.0648.596%48.6%51.404%51.4%2.780197%5.428078%2.780197%2.8%1.0281.0349.314%49.3%50.686%50.7%2.449009%4.137471%2.449009%2.4%1.0241.0249.395%49.4%50.605%50.6%4.647034%3.824931%4.647034%4.6%1.0461.0548.865%48.9%51.135%51.1%1.658114%4.303673%1.658114%1.7%1.0171.0249.589%49.6%50.411%50.4%3.875379%4.276016%3.875379%3.9%1.0391.0449.050%49.0%50.950%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 Subdivision in Cook County

Children Age Cohorts by County Subdivision#5

Percentage of population aged 0 to 17 (%):
18.0%20.7%23.5%26.2%28.9%31.7%

College Age Cohorts by County Subdivision#6

Percentage of population aged 18 to 21 (%):
2.4%4.3%6.2%8.1%9.9%11.8%

20s Age Cohorts by County Subdivision#7

Percentage of population aged 22 to 29 (%):
3.4%5.8%8.1%10.5%12.8%15.2%

30s Age Cohorts by County Subdivision#8

Percentage of population aged 30 to 39 (%):
7.8%9.6%11.4%13.2%14.9%16.8%

40s Age Cohorts by County Subdivision#9

Percentage of population aged 40 to 49 (%):
11.4%12.5%13.5%14.6%15.6%16.7%

50s Age Cohorts by County Subdivision#10

Percentage of population aged 50 to 59 (%):
9.0%11.0%12.8%14.7%16.6%18.5%

60s Age Cohorts by County Subdivision#11

Percentage of population aged 60 to 69 (%):
5.7%7.7%9.7%11.7%13.7%15.7%

70s Age Cohorts by County Subdivision#12

Percentage of population aged 70 to 79 (%):
2.9%4.1%5.2%6.4%7.5%8.8%

80+ Age Cohorts by County Subdivision#13

Percentage of population aged 80 and older (%):
1.4%2.8%4.1%5.4%6.8%8.1%
Road Data ©OpenStreetMap

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Map of Age Cohorts by Tract in Cook County

Children Age Cohorts by Tract#14

Percentage of population aged 0 to 17 (%):
1%11%21%31%40%50%

College Age Cohorts by Tract#15

Percentage of population aged 18 to 21 (%):
0%16%31%47%63%79%

20s Age Cohorts by Tract#16

Percentage of population aged 22 to 29 (%):
1%13%24%36%47%59%

30s Age Cohorts by Tract#17

Percentage of population aged 30 to 39 (%):
1%10%18%27%35%44%

40s Age Cohorts by Tract#18

Percentage of population aged 40 to 49 (%):
0.3%5.1%9.9%14.6%19.4%24.2%

50s Age Cohorts by Tract#19

Percentage of population aged 50 to 59 (%):
0.0%4.8%9.6%14.4%19.1%24.0%

60s Age Cohorts by Tract#20

Percentage of population aged 60 to 69 (%):
0%6%11%16%21%26%

70s Age Cohorts by Tract#21

Percentage of population aged 70 to 79 (%):
0.0%3.8%7.5%11.3%15.1%18.9%

80+ Age Cohorts by Tract#22

Percentage of population aged 80 and older (%):
0%6%11%17%23%29%
Road Data ©OpenStreetMap

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Age Cohorts by Place in Cook County

There are 135 places that are fully or partially contained within Cook County (105 fully and 30 partially). This section compares all 135 of those to each other, Cook County, and other entities that contain or substantially overlap with Cook County.

Children by Place#23

Percentage of population aged 0 to 17 (%):
Scope: population of Cook County, selected places in Cook County, and entities that contain Cook County
0%10%20%30%Count#DixmoorGolfWinnetkaKenilworthHinsdaleWestern SpringsW SpgsPosenCiceroSauk VillageSummitGlencoeMelrose ParkWilmetteLa GrangeRiverdaleJusticeChicago RidgeUniversity ParkUniv PkFord HeightsDeerfieldHarveyElginFrankfortStone ParkHanover ParkNorthlakePark ForestChicago HeightsChicago HtsElmhurstRiversideBerwynRoselleOak ParkChicago, Naperville, and Elgin Metro AreaChicago AreaSouth HollandIllinoisMidwestUnited States of AmericaUnited StatesEast North CentralCook CountyCookRolling MeadowsRolling MdwsNorth RiversideN RiversideChicagoSkokieArlington HeightsArlington HtsOak ForestThorntonPalos HeightsMcCookCrestwoodEast Hazel CrestE Hazel CrstBarrington HillsBarrington HlsOlympia Fields36.247925%36.247925%36.2%1,310135.647280%35.647280%35.6%190234.260674%34.260674%34.3%4,261333.448144%33.448144%33.4%874431.953206%31.953206%32.0%5,572531.782533%31.782533%31.8%4,174631.690929%31.690929%31.7%1,981731.658172%31.658172%31.7%26,58426.6k831.420169%31.420169%31.4%3,312931.019371%31.019371%31.0%3,5391030.169109%30.169109%30.2%2,6761129.934702%29.934702%29.9%7,6101229.484416%29.484416%29.5%8,0691329.379143%29.379143%29.4%4,6091428.880202%28.880202%28.9%3,7681528.393918%28.393918%28.4%3,6791628.305958%28.305958%28.3%4,0671728.224013%28.224013%28.2%2,0311828.144144%28.144144%28.1%7811928.111955%28.111955%28.1%5,2532028.105366%28.105366%28.1%7,2022127.918405%27.918405%27.9%31,24631.2k2227.770839%27.770839%27.8%5,1142327.653971%27.653971%27.7%1,3652427.330359%27.330359%27.3%10,47610.5k2526.922765%26.922765%26.9%3,3222626.888370%26.888370%26.9%5,8702726.679627%26.679627%26.7%8,0972826.605745%26.605745%26.6%12,17012.2k2926.563390%26.563390%26.6%2,3323025.812742%25.812742%25.8%14,56214.6k3924.704291%24.704291%24.7%5,6604823.980073%23.980073%24.0%12,46712.5k5823.818290%23.818290%23.8%2,269,5012.27M23.498185%23.498185%23.5%5,1796823.270328%23.270328%23.3%2,990,6292.99M23.217458%23.217458%23.2%15,712,75815.7M23.108006%23.108006%23.1%73,612,43873.6M23.005234%23.005234%23.0%10,741,74210.7M22.694997%22.694997%22.7%1,186,3981.19M22.603414%22.603414%22.6%5,2847722.211084%22.211084%22.2%1,5518721.913385%21.913385%21.9%594,733595k9121.693154%21.693154%21.7%14,07314.1k9621.253021%21.253021%21.3%16,09316.1k10020.613081%20.613081%20.6%5,78310619.969396%19.969396%20.0%52211516.318559%16.318559%16.3%2,04712515.486726%15.486726%15.5%3513115.360815%15.360815%15.4%1,68813215.172414%15.172414%15.2%24213315.081142%15.081142%15.1%53913415.036825%15.036825%15.0%735135
Count number of children
# rank of place out of 135 by %

Age Cohorts by County Subdivision in Cook County

There are 32 county subdivisions in Cook County. This section compares all 32 of those to each other, Cook County, and other entities that contain or substantially overlap with Cook County.

Children by County Subdivision#32

Percentage of population aged 0 to 17 (%):
Scope: population of Cook County, selected county subdivisions in Cook County, and entities that contain Cook County
0%10%20%30%Count#Cicero TownshipCiceroNew Trier TownshipNew TrierHanover TownshipHanoverRiver Forest TownshipRiv FrstBerwyn TownshipBerwynLyons TownshipLyonsBloom TownshipBloomBarrington TownshipBarringtonRiverside TownshipRiversideStickney TownshipStickneyThornton TownshipThorntonBremen TownshipBremenNorthfield TownshipNorthfieldOak Park TownshipOak PkChicago, Naperville, and Elgin Metro AreaChicago AreaPalatine TownshipPalatineCalumet TownshipCalumetProviso TownshipProvisoIllinoisMidwestUnited States of AmericaUnited StatesWorth TownshipWorthEast North CentralLemont TownshipLemontCook CountyCookElk Grove TownshipElk GrvRich TownshipWheeling TownshipWheelingSchaumburg TownshipSchaumburgLeyden TownshipLeydenChicagoOrland TownshipOrlandPalos TownshipPalosMaine TownshipMaineNiles TownshipNilesEvanston TownshipEvanstonNorwood Park TownshipNorwood Pk31.658172%31.658172%31.7%26,58426.6k130.525041%30.525041%30.5%17,14517.1k226.606278%26.606278%26.6%26,81726.8k326.370687%26.370687%26.4%2,958425.812742%25.812742%25.8%14,56214.6k525.549207%25.549207%25.5%28,79628.8k625.161220%25.161220%25.2%22,94222.9k724.849624%24.849624%24.8%3,966824.760311%24.760311%24.8%3,848924.659843%24.659843%24.7%10,09510.1k1024.478487%24.478487%24.5%41,48141.5k1124.034835%24.034835%24.0%26,57726.6k1223.992170%23.992170%24.0%20,83620.8k1323.980073%23.980073%24.0%12,46712.5k1423.818290%23.818290%23.8%2,269,5012.27M23.596819%23.596819%23.6%26,85226.9k1523.494324%23.494324%23.5%4,8841623.475670%23.475670%23.5%35,61435.6k1723.270328%23.270328%23.3%2,990,6292.99M23.217458%23.217458%23.2%15,712,75815.7M23.108006%23.108006%23.1%73,612,43873.6M23.039530%23.039530%23.0%35,21535.2k1823.005234%23.005234%23.0%10,741,74210.7M22.728322%22.728322%22.7%4,9251922.694997%22.694997%22.7%1,186,3981.19M22.649889%22.649889%22.6%21,11421.1k2022.456026%22.456026%22.5%17,29917.3k2122.283587%22.283587%22.3%34,53834.5k2222.157443%22.157443%22.2%29,26429.3k2322.060502%22.060502%22.1%20,49220.5k2421.913385%21.913385%21.9%594,733595k2520.845110%20.845110%20.8%20,72420.7k2620.820258%20.820258%20.8%11,41211.4k2720.781276%20.781276%20.8%28,36028.4k2820.775208%20.775208%20.8%22,05622.1k2919.975620%19.975620%20.0%15,07615.1k3018.019585%18.019585%18.0%4,76631
Count number of children
# rank of county subdivision out of 31 by %

Age Cohorts by County in the Chicago Area

There are 14 counties in the Chicago Area. This section compares Cook County to all of the counties in the Chicago Area and to those entities that contain or substantially overlap with Cook County.

Children by County#41

Percentage of population aged 0 to 17 (%):
Scope: population of Cook County, selected other counties in the Chicago Area, and entities that contain Cook County
0%10%20%Count#Kendall CountyKendallKane CountyKaneWill CountyWillGrundy CountyGrundyLake CountyLakeMcHenry CountyMcHenryLake CountyLakeJasper CountyJasperKenosha CountyKenoshaChicago, Naperville, and Elgin Metro AreaChicago AreaDuPage CountyDuPageIllinoisMidwestUnited States of AmericaUnited StatesEast North CentralPorter CountyPorterCook CountyCookNewton CountyNewtonDeKalb CountyDeKalb29.816718%29.816718%29.8%36,21336.2k127.145638%27.145638%27.1%142,953143k226.688338%26.688338%26.7%182,916183k325.888990%25.888990%25.9%13,03213.0k425.491471%25.491471%25.5%179,177179k525.044369%25.044369%25.0%76,90776.9k624.505512%24.505512%24.5%120,003120k724.428439%24.428439%24.4%8,174824.216777%24.216777%24.2%40,65940.7k923.818290%23.818290%23.8%2,269,5012.27M23.510769%23.510769%23.5%218,771219k1023.270328%23.270328%23.3%2,990,6292.99M23.217458%23.217458%23.2%15,712,75815.7M23.108006%23.108006%23.1%73,612,43873.6M23.005234%23.005234%23.0%10,741,74210.7M22.950496%22.950496%23.0%38,33138.3k1122.694997%22.694997%22.7%1,186,3981.19M1222.072458%22.072458%22.1%3,0951321.895882%21.895882%21.9%22,87222.9k14
Count number of children
# rank of county out of 14 by %

Age Cohorts by County in Illinois

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

Children by County#50

Percentage of population aged 0 to 17 (%):
Scope: population of Cook County, selected other counties in Illinois, and entities that contain Cook County
0%10%20%Count#Kendall CountyKendallKane CountyKaneWill CountyWillBoone CountyBooneGrundy CountyGrundyLake CountyLakeMcHenry CountyMcHenryWoodford CountyWoodfordKankakee CountyKankakeeSt. Clair CountySt. ClairVermilion CountyVermilionWinnebago CountyWinnebagoPeoria CountyPeoriaChicago, Naperville, and Elgin Metro AreaChicago AreaEffingham 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%44,66544.7k1323.818290%23.818290%23.8%2,269,5012.27M23.786238%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 in the United States

There are 3,142 counties in the United States. This section compares Cook County to the 50 most populous counties in the United States and to those entities that contain or substantially overlap with Cook County. The least populous of the compared counties has a population of 941,618.

Children by County#59

Percentage of population aged 0 to 17 (%):
Scope: population of Cook County, selected other counties in the United States, and entities that contain Cook County
0%10%20%Count#Fresno CountyFresnoSalt Lake CountySalt LakeSan Bernardino CountySan BernardinoHarris CountyHarrisTarrant CountyTarrantDallas CountyDallasRiverside CountyRiversideBexar CountyBexarBronx CountyBronxMaricopa CountyMaricopaWake CountyWakeMecklenburg CountyMecklenburgMilwaukee CountyMilwaukeeSacramento CountySacramentoWayne CountyWayneFairfax CountyFairfaxClark CountyClarkChicago, Naperville, and Elgin Metro AreaChicago AreaFranklin CountyFranklinFairfield CountyFairfieldMontgomery CountyMontgomeryContra Costa CountyContra CostaKings CountyKingsIllinoisMidwestHillsborough CountyHillsboroughUnited States of AmericaUnited StatesSanta Clara CountySanta ClaraTravis CountyTravisOrange CountyOrangeEast North CentralWestchester CountyWestchesterFulton CountyFultonLos Angeles CountyLos AngelesOrange CountyOrangeCook CountyCookSt. Louis CountySt. LouisSan Diego CountySan DiegoSuffolk CountySuffolkHennepin CountyHennepinPhiladelphia CountyPhiladelphiaNassau CountyNassauOakland CountyOaklandPima CountyPimaHonolulu CountyHonoluluBroward CountyBrowardCuyahoga CountyCuyahogaAlameda CountyAlamedaKing CountyKingMiami-Dade CountyMiami-DadeMiddlesex CountyMiddlesexQueens CountyQueensPalm Beach CountyPalm BeachAllegheny CountyAlleghenyNew York CountyNew York28.888866%28.888866%28.9%278,246278k128.329602%28.329602%28.3%309,506310k227.363518%27.363518%27.4%576,482576k327.228891%27.228891%27.2%1,207,3991.21M427.104397%27.104397%27.1%527,866528k526.929187%26.929187%26.9%676,745677k626.401700%26.401700%26.4%613,547614k726.219361%26.219361%26.2%487,339487k825.573137%25.573137%25.6%367,431367k925.043628%25.043628%25.0%1,023,9211.02M1024.990987%24.990987%25.0%249,554250k1124.574361%24.574361%24.6%248,637249k1224.468076%24.468076%24.5%233,745234k1324.396471%24.396471%24.4%360,897361k1424.179435%24.179435%24.2%427,394427k1523.983328%23.983328%24.0%271,704272k1623.862053%23.862053%23.9%493,981494k1723.818290%23.818290%23.8%2,269,5012.27M23.668593%23.668593%23.7%291,625292k1823.577077%23.577077%23.6%222,006222k1923.549379%23.549379%23.5%241,704242k2023.527315%23.527315%23.5%260,665261k2123.337305%23.337305%23.3%608,369608k2223.270328%23.270328%23.3%2,990,6292.99M23.217458%23.217458%23.2%15,712,75815.7M23.197227%23.197227%23.2%306,913307k2323.108006%23.108006%23.1%73,612,43873.6M23.087802%23.087802%23.1%435,218435k2423.030006%23.030006%23.0%264,425264k2523.024375%23.024375%23.0%721,172721k2623.005234%23.005234%23.0%10,741,74210.7M22.943185%22.943185%22.9%222,372222k2722.934276%22.934276%22.9%228,599229k2822.837323%22.837323%22.8%2,296,7852.30M2922.760229%22.760229%22.8%285,881286k3022.694997%22.694997%22.7%1,186,3981.19M3122.432138%22.432138%22.4%224,447224k3222.366565%22.366565%22.4%727,664728k3322.324565%22.324565%22.3%334,451334k3422.273612%22.273612%22.3%269,347269k3522.168125%22.168125%22.2%345,809346k3622.141419%22.141419%22.1%300,415300k3722.121412%22.121412%22.1%273,247273k3821.856045%21.856045%21.9%219,290219k3921.601744%21.601744%21.6%213,209213k4021.598472%21.598472%21.6%402,548403k4121.569623%21.569623%21.6%271,499271k4221.443331%21.443331%21.4%344,212344k4320.896492%20.896492%20.9%434,553435k4420.604500%20.604500%20.6%548,990549k4520.568254%20.568254%20.6%322,430322k4620.470812%20.470812%20.5%472,878473k4719.641010%19.641010%19.6%274,730275k4819.092867%19.092867%19.1%234,911235k4914.639548%14.639548%14.6%239,355239k50
Count number of children
# rank of county out of 50 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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Demographics

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Principal Cities:
Chicago, Elgin, Evanston, Des Plaines
Principal Villages:
Arlington Heights, Schaumburg, Skokie, Hoffman Estates
Cities:
Berwyn, Blue Island, Burbank, Calumet City, Chicago, Chicago Heights, Country Club Hills, Countryside, Des Plaines, Elgin, Elmhurst, Evanston, Harvey, Hickory Hills, Hometown, Markham, Northlake, Oak Forest, Palos Heights, Palos Hills, Park Ridge, Prospect Heights, Rolling Meadows
Towns:
Cicero
Townships:
Barrington, Berwyn, Bloom, Bremen, Calumet, Cicero, Elk Grove, Evanston, Hanover, Lemont, Leyden, Lyons, Maine, New Trier, Niles, Northfield, Norwood Park, Oak Park, Orland, Palatine, Palos, Proviso, Rich, River Forest, Riverside, Schaumburg, Stickney, Thornton, Wheeling, Worth
Villages:
Alsip, Arlington Heights, Barrington, Barrington Hills, Bartlett, Bedford Park, Bellwood, Bensenville, Berkeley, Bridgeview, Broadview, Brookfield, Buffalo Grove, Burnham, Burr Ridge, Calumet Park, Chicago Ridge, Crestwood, Deer Park, Deerfield, Dixmoor, Dolton, East Dundee, East Hazel Crest, Elk Grove Village, Elmwood Park, Evergreen Park, Flossmoor, Ford Heights, Forest Park, Forest View, Frankfort, Franklin Park, Glencoe, Glenview, Glenwood, Golf, Hanover Park, Harwood Heights, Hazel Crest, Hillside, Hinsdale, Hodgkins, Hoffman Estates, Homer Glen, Homewood, Indian Head Park, Inverness, Justice, Kenilworth, La Grange, La Grange Park, Lansing, Lemont, Lincolnwood, Lynwood, Lyons, Matteson, Maywood, McCook, Melrose Park, Merrionette Park, Midlothian, Morton Grove, Mount Prospect, Niles, Norridge, North Riverside, Northbrook, Northfield, Oak Brook, Oak Lawn, Oak Park, Olympia Fields, Orland Hills, Orland Park, Palatine, Palos Park, Park Forest, Phoenix, Posen, Richton Park, River Forest, River Grove, Riverdale, Riverside, Robbins, Roselle, Rosemont, Sauk Village, Schaumburg, Schiller Park, Skokie, South Barrington, South Chicago Heights, South Holland, Steger, Stickney, Stone Park, Streamwood, Summit, Thornton, Tinley Park, University Park, Westchester, Western Springs, Wheeling, Willow Springs, Wilmette, Winnetka, Worth
ZIP Codes:
60004, 60005, 60007, 60008, 60010, 60015, 60016, 60018, 60022, 60025, 60026, 60029, 60043, 60053, 60056, 60062, 60067, 60068, 60070, 60074, 60076, 60077, 60089, 60090, 60091, 60093, 60103, 60104, 60107, 60120, 60126, 60130, 60131, 60133, 60141, 60153, 60154, 60155, 60160, 60162, 60163, 60164, 60165, 60169, 60171, 60172, 60173, 60176, 60192, 60193, 60194, 60195, 60201, 60202, 60203, 60301, 60302, 60304, 60305, 60402, 60406, 60409, 60411, 60415, 60419, 60422, 60423, 60425, 60426, 60428, 60429, 60430, 60438, 60439, 60443, 60445, 60452, 60453, 60455, 60456, 60457, 60458, 60459, 60461, 60462, 60463, 60464, 60465, 60466, 60467, 60469, 60471, 60472, 60473, 60475, 60476, 60477, 60478, 60480, 60482, 60487, 60501, 60513, 60521, 60525, 60526, 60527, 60534, 60546, 60558, 60601, 60602, 60603, 60604, 60605, 60606, 60607, 60608, 60609, 60610, 60611, 60612, 60613, 60614, 60615, 60616, 60617, 60618, 60619, 60620, 60621, 60622, 60623, 60624, 60625, 60626, 60628, 60629, 60630, 60631, 60632, 60633, 60634, 60636, 60637, 60638, 60639, 60640, 60641, 60642, 60643, 60644, 60645, 60646, 60647, 60649, 60651, 60652, 60653, 60654, 60655, 60656, 60657, 60659, 60660, 60661, 60706, 60707, 60712, 60714, 60803, 60804, 60805, 60827
Unified School Districts:
Barrington 220, Chicago 299, 300, Elmwood Park 401, U-46
Elementary School Districts:
Alsip-Hazelgreen-Oaklawn 126, Arbor Park 145, Arlington Heights 25, Atwood Heights 125, Avoca 37, Bellwood 88, Berkeley 87, Berwyn North 98, Berwyn South 100, Brookfield 95, Brookwood 167, Burbank 111, Burnham 154-5, Calumet City 155, Calumet 132, Central Stickney 110, Chicago Heights 170, Chicago Ridge 127-5, Cicero 99, 59, 146, 168, Cook County 130, Country Club Hills 160, Des Plaines 62, Dolton 148, Dolton 149, East Maine 63, East Prairie 73, 159, Evanston 65, Evergreen Park 124, Flossmoor 161, Ford Heights 169, Forest Park 91, Forest Ridge 142, Franklin Park 84, General George Patton 133, Glencoe 35, Glenview 34, Golf 67, Harvey 152, Hazel Crest 152-5, Hillside 93, Hinsdale 181, Homewood 153, Hoover-Schrum Memorial 157, Indian Springs 109, Kenilworth 38, Kirby 140, Komarek 94, LaGrange Highlands 106, LaGrange 102, LaGrange 105, Lansing 158, Lemont-Bromberek 113A, Lincoln 156, Lincolnwood 74, Lindop 92, Lyons 103, Mannheim 83, Matteson 162, Maywood-Melrose Park-Broadview 89, Midlothian 143, Morton Grove 70, Mount Prospect 57, Niles 71, Norridge 80, North Palos 117, Northbrook 27, Northbrook 28, Northbrook/Glenview 30, Oak Lawn-Hometown 123, Oak Park 97, Orland 135, Palatine 15, Palos 118, Palos Heights 128, Park Forest 163, Park Ridge 64, Pennoyer 79, Pleasantdale 107, Posen-Robbins 143-5, Prairie-Hills 144, Prospect Heights 23, Rhodes 84-5, Ridgeland 122, River Forest 90, River Grove 85-5, River Trails 26, Riverside 96, Rosemont 78, Sandridge 172, Schaumburg 54, Schiller Park 81, Skokie 68, Skokie 69, Skokie 73-5, Skokie-Fairview 72, South Holland 150, South Holland 151, Steger 194, Summit 104, Sunnybrook 171, Sunset Ridge 29, Thornton 154, Union Ridge 86, West Harvey-Dixmoor 147, West Northfield 31, Westchester 92-5, Western Springs 101, Wheeling 21, Willow Springs 108, Wilmette 39, Winnetka 36, Worth 127
Secondary School Districts:
Argo 217, Bloom Township 206, Bremen 228, 218, 230, Evanston Township 202, Evergreen Park 231, Hinsdale Township 86, Homewood-Flossmoor 233, J. Sterling Morton 201, Lemont Township 210, Leyden 212, Lyons Township 204, Maine Township 207, New Trier Township 203, Niles Township 219, Northfield Township 225, Oak Lawn 229, Oak Park and River Forest 200, Proviso Township 209, Reavis Township 220, Rich Township 227, Ridgewood 234, Riverside Brookfield Township 208, Thornton Fractional Township 215, Thornton Township 205, Township 211, Township 214
Congressional Districts:
IL-1, IL-2, IL-3, IL-4, IL-5, IL-6, IL-7, IL-8, IL-9, IL-10, IL-11
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-22, IL-23, IL-24, IL-25, IL-26, IL-27, IL-28, IL-29, IL-30, IL-39, IL-40, IL-41
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-43, IL-44, IL-45, IL-47, IL-49, IL-51, IL-52, IL-53, IL-54, IL-55, IL-56, IL-57, IL-58, IL-59, IL-77, IL-78, IL-80, IL-82
Neighboring Counties:
Berrien, DuPage, Kane, Lake, Lake, McHenry, Porter, Will
Nearby Counties:
Grundy, Kankakee, Kendall, Kenosha, Racine