Age and Sex in Polk County, Iowa (County)

Age Structure#1

Percentage in each age cohort per year of age.1 Gray areas represent percentile bands from the counties in Iowa.
Scope: population of Iowa, Polk County, and other counties in Iowa
Polk County
Iowa
Percentile:
0th - 100th
10th - 90th
20th - 80th
30th - 70th
40th - 60th
0.0%0.5%1.0%1.5%Count%85+80-8475-7970-7467-6965-6662-6460-6155-5950-5445-4940-4435-3930-3425-2922-24212018-1915-1710-145-90-47,1101.548%1.55%6,5761.432%1.43%9,0901.980%1.98%12,24512.2k2.667%2.67%9,4502.058%2.06%9,3652.040%2.04%13,88713.9k3.024%3.02%11,23511.2k2.447%2.45%27,92327.9k6.081%6.08%30,81630.8k6.711%6.71%30,14930.1k6.566%6.57%31,47231.5k6.854%6.85%30,56730.6k6.657%6.66%36,34436.3k7.915%7.92%35,83235.8k7.804%7.80%18,06518.1k3.934%3.93%5,4821.194%1.19%6,2881.369%1.37%11,13711.1k2.426%2.43%18,07118.1k3.936%3.94%31,83031.8k6.932%6.93%32,54432.5k7.088%7.09%33,68133.7k7.335%7.34%
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 Iowa and Polk County
Female Male
Iowa
Polk County
Shaded bar tips show excess over facing bar.
0.5%0.0%0.5%Count%Senior2Older Adult3Younger Adult4College5Children6-0.139772%-0.046147%-0.192490%-0.053856%-0.185920%0.19%0.139772%0.192490%0.139772%0.14%53,83653.8k11.725%11.7%-0.626545%-0.014287%-0.638182%-0.640832%0.64%0.626545%0.638182%0.001353%0.626545%0.63%145,482145k31.684%31.7%-0.725445%-0.010817%-0.619125%-0.736262%0.74%0.725445%0.619125%0.025145%0.725445%0.73%120,808121k26.311%26.3%-0.617705%-0.735381%-0.617705%0.62%0.617705%0.011815%0.735381%0.054111%0.629520%0.63%22,90722.9k4.989%4.99%-0.686460%-0.634612%-0.686460%0.69%0.686460%0.032136%0.634612%0.031800%0.718596%0.72%116,126116k25.291%25.3%
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 Iowa and Polk County
Female Male
Iowa
Polk County
Shaded bar tips show excess over facing bar.
0.5%0.0%0.5%Count%85+80-8475-7970-7467-6965-6662-6460-6155-5950-5445-4940-4435-3930-3425-2922-24212018-1915-1710-145-90-4-0.032001%-0.032777%-0.051411%-0.053545%-0.064779%0.06%0.032001%0.051411%0.032001%0.03%7,1101.548%1.55%-0.106760%-0.072916%-0.174468%-0.075066%-0.179676%0.18%0.106760%0.174468%0.106760%0.11%6,5761.432%1.43%-0.173752%-0.048436%-0.248144%-0.065989%-0.222189%0.22%0.173752%0.248144%0.173752%0.17%9,0901.980%1.98%-0.250371%-0.032625%-0.334521%-0.038389%-0.282996%0.28%0.250371%0.334521%0.250371%0.25%12,24512.2k2.667%2.67%-0.310132%-0.065772%-0.424367%-0.036879%-0.375905%0.38%0.310132%0.424367%0.310132%0.31%9,4502.058%2.06%-0.467485%-0.084829%-0.524144%-0.037115%-0.552314%0.55%0.467485%0.524144%0.467485%0.47%9,3652.040%2.04%-0.497722%-0.012704%-0.595229%-0.000536%-0.510426%0.51%0.497722%0.595229%0.497722%0.50%13,88713.9k3.024%3.02%-0.559392%-0.104648%-0.663219%-0.010462%-0.664040%0.66%0.559392%0.663219%0.559392%0.56%11,23511.2k2.447%2.45%-0.588293%-0.039681%-0.675983%-0.012541%-0.627974%0.63%0.588293%0.675983%0.588293%0.59%27,92327.9k6.081%6.08%-0.660991%-0.020298%-0.690906%-0.006245%-0.681289%0.68%0.660991%0.690906%0.660991%0.66%30,81630.8k6.711%6.71%-0.653891%-0.607007%-0.653891%0.65%0.653891%0.005445%0.607007%0.012683%0.659336%0.66%30,14930.1k6.566%6.57%-0.669136%-0.571295%-0.669136%0.67%0.669136%0.032581%0.571295%0.017376%0.701718%0.70%31,47231.5k6.854%6.85%-0.660817%-0.009801%-0.587487%-0.670617%0.67%0.660817%0.587487%0.012483%0.660817%0.66%30,56730.6k6.657%6.66%-0.786394%-0.628104%-0.786394%0.79%0.786394%0.010280%0.628104%0.026170%0.796674%0.80%36,34436.3k7.915%7.92%-0.776681%-0.007405%-0.601386%-0.784086%0.78%0.776681%0.601386%0.033864%0.776681%0.78%35,83235.8k7.804%7.80%-0.629049%-0.053358%-0.686455%-0.682407%0.68%0.629049%0.686455%0.030011%0.629049%0.63%18,06518.1k3.934%3.93%-0.578449%-0.037024%-0.733441%-0.615473%0.62%0.578449%0.733441%0.046900%0.578449%0.58%5,4821.194%1.19%-0.654675%-0.770169%-0.654675%0.65%0.654675%0.060110%0.770169%0.056074%0.714785%0.71%6,2881.369%1.37%-0.600337%-0.718956%-0.600337%0.60%0.600337%0.012087%0.718956%0.056734%0.612424%0.61%11,13711.1k2.426%2.43%-0.640156%-0.640338%-0.640156%0.64%0.640156%0.031579%0.640338%0.030076%0.671735%0.67%18,07118.1k3.936%3.94%-0.684469%-0.639003%-0.684469%0.68%0.684469%0.017510%0.639003%0.033033%0.701979%0.70%31,83031.8k6.932%6.93%-0.685688%-0.643465%-0.685688%0.69%0.685688%0.046171%0.643465%0.031842%0.731860%0.73%32,54432.5k7.088%7.09%-0.717007%-0.617932%-0.717007%0.72%0.717007%0.033060%0.617932%0.031559%0.750067%0.75%33,68133.7k7.335%7.34%
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 Iowa and Polk County
More Females More Males
Iowa
Polk County
100%50%0%M:FFM85+80-8475-7970-7467-6965-6662-6460-6155-5950-5445-4940-4435-3930-3425-2922-24212018-1915-1710-145-90-4-102.424500%-104.151992%-102.424500%102.4%0.4940.4966.934%66.9%33.066%33.1%-68.298654%-43.025830%-68.298654%68.3%0.5940.5962.728%62.7%37.272%37.3%-27.876661%-26.592985%-27.876661%27.9%0.7820.7856.117%56.1%43.883%43.9%-13.030619%-11.475915%-13.030619%13.0%0.8850.8853.058%53.1%46.942%46.9%-21.207865%-8.690265%-21.207865%21.2%0.8250.8354.794%54.8%45.206%45.2%-18.145819%-7.081005%-18.145819%18.1%0.8460.8554.159%54.2%45.841%45.8%-2.552509%-0.090132%-2.552509%2.6%0.9750.9850.630%50.6%49.370%49.4%-18.707417%-1.577402%-18.707417%18.7%0.8420.8454.277%54.3%45.723%45.7%-6.745150%-1.855238%-6.745150%6.7%0.9370.9451.631%51.6%48.369%48.4%-3.070840%-0.903856%-3.070840%3.1%0.9700.9750.756%50.8%49.244%49.2%0.832667%2.089388%0.832667%0.8%1.0081.0149.793%49.8%50.207%50.2%4.869158%3.041504%4.869158%4.9%1.0491.0548.812%48.8%51.188%51.2%-1.483093%-1.483093%1.5%2.124838%0.9850.9950.368%50.4%49.632%49.6%1.307190%4.166539%1.307190%1.3%1.0131.0149.675%49.7%50.325%50.3%-0.953396%-0.953396%1.0%5.630908%0.9910.9950.237%50.2%49.763%49.8%-8.482400%-8.482400%8.5%4.371952%0.9220.9252.034%52.0%47.966%48.0%-6.400602%-6.400602%6.4%6.394558%0.9400.9451.551%51.6%48.449%48.4%9.181637%7.280782%9.181637%9.2%1.0921.0947.805%47.8%52.195%52.2%2.013423%7.891202%2.013423%2.0%1.0201.0249.502%49.5%50.498%50.5%4.933091%4.696873%4.933091%4.9%1.0491.0548.796%48.8%51.204%51.2%2.558228%5.169461%2.558228%2.6%1.0261.0349.369%49.4%50.631%50.6%6.733579%4.948524%6.733579%6.7%1.0671.0748.371%48.4%51.629%51.6%4.610898%5.107154%4.610898%4.6%1.0461.0548.873%48.9%51.127%51.1%
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 Polk County

Children Age Cohorts by County Subdivision#5

Percentage of population aged 0 to 17 (%):
0%7%14%20%27%34%

College Age Cohorts by County Subdivision#6

Percentage of population aged 18 to 21 (%):
0.0%2.3%4.6%7.0%9.3%11.7%

20s Age Cohorts by County Subdivision#7

Percentage of population aged 22 to 29 (%):
0.0%2.7%5.4%8.1%10.9%13.6%

30s Age Cohorts by County Subdivision#8

Percentage of population aged 30 to 39 (%):
5.4%8.0%10.7%13.3%15.9%18.6%

40s Age Cohorts by County Subdivision#9

Percentage of population aged 40 to 49 (%):
6.7%10.8%14.8%18.8%22.8%26.9%

50s Age Cohorts by County Subdivision#10

Percentage of population aged 50 to 59 (%):
0.0%4.5%8.9%13.4%17.8%22.3%

60s Age Cohorts by County Subdivision#11

Percentage of population aged 60 to 69 (%):
6%12%17%23%28%34%

70s Age Cohorts by County Subdivision#12

Percentage of population aged 70 to 79 (%):
2%9%15%21%27%34%

80+ Age Cohorts by County Subdivision#13

Percentage of population aged 80 and older (%):
0.0%1.1%2.2%3.3%4.4%5.6%
Road Data ©OpenStreetMap

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Map of Age Cohorts by Tract in Polk County

Children Age Cohorts by Tract#14

Percentage of population aged 0 to 17 (%):
9%15%20%26%32%38%

College Age Cohorts by Tract#15

Percentage of population aged 18 to 21 (%):
0%6%12%18%24%30%

20s Age Cohorts by Tract#16

Percentage of population aged 22 to 29 (%):
2%10%17%23%30%38%

30s Age Cohorts by Tract#17

Percentage of population aged 30 to 39 (%):
7.8%10.7%13.6%16.4%19.3%22.2%

40s Age Cohorts by Tract#18

Percentage of population aged 40 to 49 (%):
5.9%8.4%10.8%13.2%15.7%18.1%

50s Age Cohorts by Tract#19

Percentage of population aged 50 to 59 (%):
7.0%10.3%13.5%16.8%20.0%23.3%

60s Age Cohorts by Tract#20

Percentage of population aged 60 to 69 (%):
3.6%6.6%9.6%12.6%15.5%18.5%

70s Age Cohorts by Tract#21

Percentage of population aged 70 to 79 (%):
1.1%2.7%4.2%5.8%7.3%8.9%

80+ Age Cohorts by Tract#22

Percentage of population aged 80 and older (%):
0.4%3.6%6.7%9.7%12.8%16.0%
Road Data ©OpenStreetMap

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Map of Age Cohorts by Block Group in Polk County

Children Age Cohorts by Block Group#23

Percentage of population aged 0 to 17 (%):
0%10%20%30%40%50%

College Age Cohorts by Block Group#24

Percentage of population aged 18 to 21 (%):
0%13%26%39%52%65%

20s Age Cohorts by Block Group#25

Percentage of population aged 22 to 29 (%):
0%10%19%29%38%49%

30s Age Cohorts by Block Group#26

Percentage of population aged 30 to 39 (%):
0%8%15%22%29%36%

40s Age Cohorts by Block Group#27

Percentage of population aged 40 to 49 (%):
1%8%14%19%25%32%

50s Age Cohorts by Block Group#28

Percentage of population aged 50 to 59 (%):
0%7%13%20%27%34%

60s Age Cohorts by Block Group#29

Percentage of population aged 60 to 69 (%):
0%5%11%16%22%28%

70s Age Cohorts by Block Group#30

Percentage of population aged 70 to 79 (%):
0.0%3.7%7.3%11.0%14.6%18.3%

80+ Age Cohorts by Block Group#31

Percentage of population aged 80 and older (%):
0%5%10%16%21%27%
Road Data ©OpenStreetMap

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Age Cohorts by Place in Polk County

There are 21 places that are fully or partially contained within Polk County (11 fully and 10 partially). This section compares all 21 of those to each other, Polk County, and other entities that contain or substantially overlap with Polk County.

Children by Place#32

Percentage of population aged 0 to 17 (%):
Scope: population of Polk County, selected places in Polk County, and entities that contain Polk County
0%10%20%30%Count#BondurantGrimesPolk CityGrangerCarlisleRunnellsAltoonaAnkenyNorwalkCliveJohnstonDes Moines and West Des Moines Metro AreaDes MoinesUrbandalePolk CountyPolkDes MoinesElkhartSaylorvilleAllemanWest North CentralPleasant HillWindsor HeightsWindsor HtsIowaMidwestUnited States of AmericaUnited StatesWest Des MoinesW Des MoinesSheldahlMitchellville38.235873%38.235873%38.2%1,942132.431395%32.431395%32.4%3,380230.886999%30.886999%30.9%1,271330.390144%30.390144%30.4%444428.925825%28.925825%28.9%1,166528.404669%28.404669%28.4%146627.875629%27.875629%27.9%4,653727.824687%27.824687%27.8%14,86214.9k827.473854%27.473854%27.5%2,732927.388086%27.388086%27.4%4,6621027.043251%27.043251%27.0%5,2711125.663215%25.663215%25.7%156,996157k25.426908%25.426908%25.4%10,57210.6k1225.291021%25.291021%25.3%116,126116k24.908508%24.908508%24.9%53,02053.0k1324.539877%24.539877%24.5%2001424.528302%24.528302%24.5%8451523.847695%23.847695%23.8%1191623.689691%23.689691%23.7%4,971,0164.97M23.601956%23.601956%23.6%2,2201723.574297%23.574297%23.6%1,1741823.418418%23.418418%23.4%727,514728k23.217458%23.217458%23.2%15,712,75815.7M23.108006%23.108006%23.1%73,612,43873.6M22.340322%22.340322%22.3%13,76713.8k1918.875502%18.875502%18.9%472017.569353%17.569353%17.6%39921
Count number of children
# rank of place out of 21 by %

Age Cohorts by County Subdivision in Polk County

There are 22 county subdivisions in Polk County. This section compares all 22 of those to each other, Polk County, and other entities that contain or substantially overlap with Polk County.

Children by County Subdivision#41

Percentage of population aged 0 to 17 (%):
Scope: population of Polk County, selected county subdivisions in Polk County, and entities that contain Polk County
0%10%20%30%Count#Jefferson TownshipJeffersonAllen TownshipAllenFranklin TownshipFranklinMadison TownshipMadisonLincoln TownshipLincolnCrocker TownshipCrockerClay TownshipDouglas TownshipDouglasCamp TownshipLee TownshipWebster TownshipWebsterDes Moines and West Des Moines Metro AreaDes MoinesBloomfield TownshipBloomfieldPolk CountyPolkElkhart TownshipElkhartDelaware TownshipDelawareUnion TownshipUnionWest North CentralIowaMidwestUnited States of AmericaUnited StatesDes Moines TownshipDes MoinesWashington TownshipWashingtonFour Mile TownshipFour MileWalnut TownshipWalnutSaylor TownshipSaylorBeaver TownshipBeaverSaylorville Reservoir33.785694%33.785694%33.8%3,585133.157525%33.157525%33.2%943232.594524%32.594524%32.6%1,500331.262376%31.262376%31.3%1,263429.653882%29.653882%29.7%317528.859738%28.859738%28.9%15,44415.4k627.901677%27.901677%27.9%5,142727.008547%27.008547%27.0%1,896826.847178%26.847178%26.8%585926.817784%26.817784%26.8%17,48617.5k1025.906350%25.906350%25.9%14,94914.9k1125.663215%25.663215%25.7%156,996157k25.600577%25.600577%25.6%8,1631225.291021%25.291021%25.3%116,126116k24.844720%24.844720%24.8%4001324.158916%24.158916%24.2%2,1041423.956443%23.956443%24.0%1321523.689691%23.689691%23.7%4,971,0164.97M23.418418%23.418418%23.4%727,514728k23.217458%23.217458%23.2%15,712,75815.7M23.108006%23.108006%23.1%73,612,43873.6M22.683503%22.683503%22.7%23,15623.2k1622.635135%22.635135%22.6%671722.572125%22.572125%22.6%2,2221822.269623%22.269623%22.3%15,03415.0k1919.144108%19.144108%19.1%1,1812017.149015%17.149015%17.1%557210.000000%0.000000%0.0%022
Count number of children
# rank of county subdivision out of 22 by %

Age Cohorts by County in the Des Moines Area

There are 5 counties in the Des Moines Area. This section compares Polk County to all of the counties in the Des Moines Area and to those entities that contain or substantially overlap with Polk County.

Children by County#50

Percentage of population aged 0 to 17 (%):
Scope: population of Polk County, selected other counties in the Des Moines Area, and entities that contain Polk County
0%10%20%Count#Dallas CountyDallasMadison CountyMadisonDes Moines and West Des Moines Metro AreaDes MoinesPolk CountyPolkWarren CountyWarrenWest North CentralIowaMidwestUnited States of AmericaUnited StatesGuthrie CountyGuthrie28.497323%28.497323%28.5%22,24922.2k125.994509%25.994509%26.0%4,071225.663215%25.663215%25.7%156,996157k25.291021%25.291021%25.3%116,126116k325.204484%25.204484%25.2%12,14112.1k423.689691%23.689691%23.7%4,971,0164.97M23.418418%23.418418%23.4%727,514728k23.217458%23.217458%23.2%15,712,75815.7M23.108006%23.108006%23.1%73,612,43873.6M22.532972%22.532972%22.5%2,4095
Count number of children
# rank of county out of 5 by %

Age Cohorts by County in Iowa

There are 99 counties in Iowa. This section compares Polk County to the 50 most populous counties in Iowa and to those entities that contain or substantially overlap with Polk County. The least populous of the compared counties has a population of 15,552.

Children by County#59

Percentage of population aged 0 to 17 (%):
Scope: population of Polk County, selected other counties in Iowa, and entities that contain Polk County
0%10%20%Count#Dallas CountyDallasSioux CountySiouxBuchanan CountyBuchananWoodbury CountyWoodburyMadison CountyMadisonCrawford CountyCrawfordDes Moines and West Des Moines Metro AreaDes MoinesMuscatine CountyMuscatineBuena Vista CountyBuena VistaPolk CountyPolkWarren CountyWarrenPlymouth CountyPlymouthMarshall CountyMarshallWashington CountyWashingtonBenton CountyBentonTama CountyTamaCarroll CountyCarrollMarion CountyMarionScott CountyScottDelaware CountyDelawareLinn CountyLinnWest North CentralPottawattamie CountyPottawattamieMahaska CountyMahaskaIowaIowa CountyIowaMidwestCedar CountyCedarUnited States of AmericaUnited StatesDubuque CountyDubuqueClinton CountyClintonDes Moines CountyDes MoinesClay CountyClayFloyd CountyFloydWapello CountyWapelloHenry CountyHenryBoone CountyBooneJackson CountyJacksonJasper CountyJasperHardin CountyHardinClayton CountyClaytonBremer CountyBremerJones CountyJonesLee CountyLeeBlack Hawk CountyBlack HawkWebster CountyWebsterFayette CountyFayettePage CountyPageCerro Gordo CountyCerro GordoPoweshiek CountyPoweshiekJohnson CountyJohnsonJefferson CountyJeffersonDickinson CountyDickinsonWinneshiek CountyWinneshiekStory CountyStory28.497323%28.497323%28.5%22,24922.2k127.044279%27.044279%27.0%9,363226.679663%26.679663%26.7%5,611326.290200%26.290200%26.3%26,92826.9k425.994509%25.994509%26.0%4,071525.928734%25.928734%25.9%4,446625.663215%25.663215%25.7%156,996157k25.406878%25.406878%25.4%10,91210.9k725.375397%25.375397%25.4%5,188825.291021%25.291021%25.3%116,126116k925.204484%25.204484%25.2%12,14112.1k1025.124139%25.124139%25.1%6,2741125.003069%25.003069%25.0%10,18510.2k1224.752430%24.752430%24.8%5,4741324.642302%24.642302%24.6%6,3381424.203639%24.203639%24.2%4,2171524.169302%24.169302%24.2%4,9681624.119649%24.119649%24.1%8,0071724.059118%24.059118%24.1%41,16941.2k1824.029808%24.029808%24.0%4,1921923.886168%23.886168%23.9%52,09052.1k2023.689691%23.689691%23.7%4,971,0164.97M23.681839%23.681839%23.7%22,07122.1k2123.588963%23.588963%23.6%5,2662223.418418%23.418418%23.4%727,514728k23.349259%23.349259%23.3%3,8122323.217458%23.217458%23.2%15,712,75815.7M23.171461%23.171461%23.2%4,2612423.108006%23.108006%23.1%73,612,43873.6M23.102149%23.102149%23.1%22,26122.3k2523.017594%23.017594%23.0%11,04211.0k2622.899736%22.899736%22.9%9,1862722.812234%22.812234%22.8%3,7592822.663084%22.663084%22.7%3,6272922.436298%22.436298%22.4%7,9073022.416128%22.416128%22.4%4,4703122.335391%22.335391%22.3%5,8993222.300169%22.300169%22.3%4,3553322.187117%22.187117%22.2%8,1463422.102286%22.102286%22.1%3,8293522.058077%22.058077%22.1%3,9123622.016786%22.016786%22.0%5,4303721.683512%21.683512%21.7%4,4413821.630843%21.630843%21.6%7,6083921.563608%21.563608%21.6%28,64128.6k4021.511471%21.511471%21.5%7,9704121.362366%21.362366%21.4%4,3564221.129115%21.129115%21.1%3,2864320.804563%20.804563%20.8%9,0094420.191172%20.191172%20.2%3,7604520.137881%20.137881%20.1%28,59728.6k4619.516476%19.516476%19.5%3,4474719.400446%19.400446%19.4%3,3074818.774352%18.774352%18.8%3,9034917.082481%17.082481%17.1%16,20016.2k50
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 Polk County to the 50 most populous counties in the United States and to those entities that contain or substantially overlap with Polk County. The least populous of the compared counties has a population of 941,618.

Children by County#68

Percentage of population aged 0 to 17 (%):
Scope: population of Polk County, selected other counties in the United States, and entities that contain Polk County
0%10%20%Count#Fresno CountyFresnoSalt Lake CountySalt LakeSan Bernardino CountySan BernardinoHarris CountyHarrisTarrant CountyTarrantDallas CountyDallasRiverside CountyRiversideBexar CountyBexarDes Moines and West Des Moines Metro AreaDes MoinesBronx CountyBronxPolk CountyPolkMaricopa CountyMaricopaWake CountyWakeMecklenburg CountyMecklenburgMilwaukee CountyMilwaukeeSacramento CountySacramentoWayne CountyWayneFairfax CountyFairfaxClark CountyClarkWest North CentralFranklin CountyFranklinFairfield CountyFairfieldMontgomery CountyMontgomeryContra Costa CountyContra CostaIowaKings CountyKingsMidwestHillsborough CountyHillsboroughUnited States of AmericaUnited StatesSanta Clara CountySanta ClaraTravis CountyTravisOrange CountyOrangeWestchester 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%487,339487k825.663215%25.663215%25.7%156,996157k25.573137%25.573137%25.6%367,431367k925.291021%25.291021%25.3%116,126116k25.043628%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%493,981494k1723.689691%23.689691%23.7%4,971,0164.97M23.668593%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%260,665261k2123.418418%23.418418%23.4%727,514728k23.337305%23.337305%23.3%608,369608k2223.217458%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%721,172721k2622.943185%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.

More Topics to Explore

Demographics

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More Maps to Explore

Principal Cities:
Des Moines, West Des Moines
Cities:
Alleman, Altoona, Ankeny, Bondurant, Carlisle, Clive, Des Moines, Elkhart, Granger, Grimes, Johnston, Mitchellville, Norwalk, Pleasant Hill, Polk City, Runnells, Sheldahl, Urbandale, West Des Moines, Windsor Heights
Townships:
Allen, Beaver, Bloomfield, Camp, Clay, Crocker, Delaware, Des Moines, Douglas, Elkhart, Four Mile, Franklin, Jefferson, Lee, Lincoln, Madison, Saylor, Union, Walnut, Washington, Webster
Unincorporated Places:
Saylorville
Unorganized Territories:
Saylorville Reservoir
ZIP Codes:
50007, 50009, 50021, 50023, 50032, 50035, 50046, 50047, 50061, 50073, 50109, 50111, 50124, 50131, 50156, 50161, 50169, 50226, 50237, 50243, 50244, 50265, 50266, 50309, 50310, 50311, 50312, 50313, 50314, 50315, 50316, 50317, 50319, 50320, 50321, 50322, 50323, 50324, 50325, 50327
Unified School Districts:
Ankeny, Ballard, Bondurant-Farrar, Carlisle, Collins-Maxwell, Dallas Center-Grimes, Des Moines Independent, Johnston, Madrid, North Polk, PCM, Saydel, Southeast Polk, Urbandale, West Des Moines, Woodward-Granger
Congressional District:
IA-3
State Senate Districts:
IA-10, IA-15, IA-16, IA-17, IA-18, IA-19, IA-20, IA-21, IA-22
State House Districts:
IA-19, IA-30, IA-31, IA-32, IA-33, IA-34, IA-35, IA-36, IA-37, IA-38, IA-39, IA-40, IA-41, IA-42, IA-43
Neighboring Counties:
Boone, Dallas, Jasper, Madison, Marion, Story, Warren
Nearby Counties:
Clarke, Greene, Hamilton, Hardin, Lucas, Marshall, Monroe, Union, Webster