Age and Sex in Iowa (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, Iowa, and other states
Iowa
United States
Percentile:
0th - 100th
10th - 90th
20th - 80th
30th - 70th
40th - 60th
0.0%0.5%1.0%1.5%Count%85+80-8475-7970-7467-6965-6662-6460-6155-5950-5445-4940-4435-3930-3425-2922-24212018-1915-1710-145-90-477,72377.7k2.502%2.50%65,86065.9k2.120%2.12%87,33887.3k2.811%2.81%109,885110k3.537%3.54%82,53782.5k2.657%2.66%67,43867.4k2.171%2.17%110,998111k3.573%3.57%83,06483.1k2.674%2.67%211,948212k6.823%6.82%215,606216k6.940%6.94%190,542191k6.133%6.13%180,177180k5.800%5.80%184,447184k5.937%5.94%199,191199k6.412%6.41%192,086192k6.183%6.18%130,749131k4.209%4.21%47,02747.0k1.514%1.51%49,59449.6k1.596%1.60%92,86592.9k2.989%2.99%122,159122k3.932%3.93%203,643204k6.555%6.56%204,844205k6.594%6.59%196,868197k6.337%6.34%
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 the United States and Iowa
Female Male
United States
Iowa
Shaded bar tips show excess over facing bar.
0.5%0.0%0.5%Count%Senior2Older Adult3Younger Adult4College5Children6-0.192490%-0.053856%-0.177049%-0.048590%-0.246346%0.25%0.192490%0.177049%0.192490%0.19%490,781491k15.798%15.8%-0.638182%-0.639439%-0.027509%-0.638182%0.64%0.638182%0.001353%0.639439%0.639535%0.64%992,335992k31.943%31.9%-0.619125%-0.662794%-0.619125%0.62%0.619125%0.025145%0.662794%0.011473%0.644270%0.64%706,473706k22.741%22.7%-0.735381%-0.690098%-0.735381%0.74%0.735381%0.054111%0.690098%0.036916%0.789491%0.79%189,486189k6.099%6.10%-0.634612%-0.627873%-0.634612%0.63%0.634612%0.031800%0.627873%0.028032%0.666412%0.67%727,514728k23.418%23.4%
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 Iowa
Female Male
United States
Iowa
Shaded bar tips show excess over facing bar.
0.5%0.0%0.5%Count%85+80-8475-7970-7467-6965-6662-6460-6155-5950-5445-4940-4435-3930-3425-2922-24212018-1915-1710-145-90-4-0.051411%-0.053545%-0.040405%-0.038024%-0.104956%0.10%0.051411%0.040405%0.051411%0.05%77,72377.7k2.502%2.50%-0.174468%-0.075066%-0.151220%-0.063891%-0.249534%0.25%0.174468%0.151220%0.174468%0.17%65,86065.9k2.120%2.12%-0.248144%-0.065989%-0.220748%-0.056595%-0.314132%0.31%0.248144%0.220748%0.248144%0.25%87,33887.3k2.811%2.81%-0.334521%-0.038389%-0.319204%-0.054701%-0.372911%0.37%0.334521%0.319204%0.334521%0.33%109,885110k3.537%3.54%-0.424367%-0.036879%-0.421958%-0.052156%-0.461245%0.46%0.424367%0.421958%0.424367%0.42%82,53782.5k2.657%2.66%-0.524144%-0.037115%-0.502773%-0.054229%-0.561259%0.56%0.524144%0.502773%0.524144%0.52%67,43867.4k2.171%2.17%-0.595229%-0.000536%-0.541468%-0.051993%-0.595766%0.60%0.595229%0.541468%0.595229%0.60%110,998111k3.573%3.57%-0.663219%-0.010462%-0.599140%-0.045449%-0.673681%0.67%0.663219%0.599140%0.663219%0.66%83,06483.1k2.674%2.67%-0.675983%-0.012541%-0.647813%-0.041116%-0.688524%0.69%0.675983%0.647813%0.675983%0.68%211,948212k6.823%6.82%-0.690906%-0.006245%-0.688902%-0.025961%-0.697150%0.70%0.690906%0.688902%0.690906%0.69%215,606216k6.940%6.94%-0.607007%-0.655595%-0.013619%-0.607007%0.61%0.607007%0.012683%0.655595%0.619689%0.62%190,542191k6.133%6.13%-0.571295%-0.640349%-0.007471%-0.571295%0.57%0.571295%0.017376%0.640349%0.588671%0.59%180,177180k5.800%5.80%-0.587487%-0.626779%-0.004019%-0.587487%0.59%0.587487%0.012483%0.626779%0.599970%0.60%184,447184k5.937%5.94%-0.628104%-0.669173%-0.628104%0.63%0.628104%0.026170%0.669173%0.005514%0.654274%0.65%199,191199k6.412%6.41%-0.601386%-0.680581%-0.601386%0.60%0.601386%0.033864%0.680581%0.019624%0.635250%0.64%192,086192k6.183%6.18%-0.686455%-0.675846%-0.686455%0.69%0.686455%0.030011%0.675846%0.033642%0.716466%0.72%130,749131k4.209%4.21%-0.733441%-0.709599%-0.733441%0.73%0.733441%0.046900%0.709599%0.039633%0.780341%0.78%47,02747.0k1.514%1.51%-0.770169%-0.721323%-0.770169%0.77%0.770169%0.056074%0.721323%0.040945%0.826244%0.83%49,59449.6k1.596%1.60%-0.718956%-0.664734%-0.718956%0.72%0.718956%0.056734%0.664734%0.033543%0.775690%0.78%92,86592.9k2.989%2.99%-0.640338%-0.642594%-0.640338%0.64%0.640338%0.030076%0.642594%0.030383%0.670414%0.67%122,159122k3.932%3.93%-0.639003%-0.635182%-0.639003%0.64%0.639003%0.033033%0.635182%0.027016%0.672036%0.67%203,643204k6.555%6.56%-0.643465%-0.629799%-0.643465%0.64%0.643465%0.031842%0.629799%0.027976%0.675307%0.68%204,844205k6.594%6.59%-0.617932%-0.609806%-0.617932%0.62%0.617932%0.031559%0.609806%0.027693%0.649490%0.65%196,868197k6.337%6.34%
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 the United States and Iowa
More Females More Males
United States
Iowa
100%50%0%M:FFM85+80-8475-7970-7467-6965-6662-6460-6155-5950-5445-4940-4435-3930-3425-2922-24212018-1915-1710-145-90-4-104.151992%-94.107784%-104.151992%104.2%0.4900.4967.122%67.1%32.878%32.9%-43.025830%-42.250155%-43.025830%43.0%0.6990.7058.852%58.9%41.148%41.1%-26.592985%-25.637895%-26.592985%26.6%0.7900.7955.868%55.9%44.132%44.1%-11.475915%-17.136703%-11.475915%11.5%0.8970.9052.713%52.7%47.287%47.3%-8.690265%-12.360556%-8.690265%8.7%0.9200.9252.082%52.1%47.918%47.9%-7.081005%-10.786056%-7.081005%7.1%0.9340.9351.710%51.7%48.290%48.3%-0.090132%-9.602216%-0.090132%0.1%0.9991.0050.023%50.0%49.977%50.0%-1.577402%-7.585728%-1.577402%1.6%0.9840.9850.391%50.4%49.609%49.6%-1.855238%-6.346862%-1.855238%1.9%0.9820.9850.460%50.5%49.540%49.5%-0.903856%-3.768485%-0.903856%0.9%0.9910.9950.225%50.2%49.775%49.8%-2.077397%2.089388%2.089388%2.1%1.0211.0249.483%49.5%50.517%50.5%-1.166734%3.041504%3.041504%3.0%1.0301.0349.251%49.3%50.749%50.7%-0.641232%2.124838%2.124838%2.1%1.0211.0249.474%49.5%50.526%50.5%4.166539%0.824044%4.166539%4.2%1.0421.0448.980%49.0%51.020%51.0%5.630908%2.883352%5.630908%5.6%1.0561.0648.631%48.6%51.369%51.4%4.371952%4.977745%4.371952%4.4%1.0441.0448.930%48.9%51.070%51.1%6.394558%5.585264%6.394558%6.4%1.0641.0648.451%48.5%51.549%51.5%7.280782%5.676433%7.280782%7.3%1.0731.0748.244%48.2%51.756%51.8%7.891202%5.046055%7.891202%7.9%1.0791.0848.102%48.1%51.898%51.9%4.696873%4.728170%4.696873%4.7%1.0471.0548.853%48.9%51.147%51.1%5.169461%4.253238%5.169461%5.2%1.0521.0548.740%48.7%51.260%51.3%4.948524%4.441989%4.948524%4.9%1.0491.0548.793%48.8%51.207%51.2%5.107154%4.541243%5.107154%5.1%1.0511.0548.755%48.8%51.245%51.2%
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 Iowa

Children Age Cohorts by County#5

Percentage of population aged 0 to 17 (%):
17.0%19.5%22.0%24.4%26.8%29.3%

College Age Cohorts by County#6

Percentage of population aged 18 to 21 (%):
2.3%6.3%10.3%14.3%18.2%22.2%

20s Age Cohorts by County#7

Percentage of population aged 22 to 29 (%):
5.7%8.0%10.3%12.5%14.7%17.0%

30s Age Cohorts by County#8

Percentage of population aged 30 to 39 (%):
8.4%10.0%11.6%13.1%14.7%16.3%

40s Age Cohorts by County#9

Percentage of population aged 40 to 49 (%):
8.3%9.6%10.8%12.0%13.2%14.4%

50s Age Cohorts by County#10

Percentage of population aged 50 to 59 (%):
9.5%11.2%12.8%14.4%16.0%17.6%

60s Age Cohorts by County#11

Percentage of population aged 60 to 69 (%):
7.7%9.7%11.7%13.7%15.7%17.8%

70s Age Cohorts by County#12

Percentage of population aged 70 to 79 (%):
3.7%5.2%6.5%7.9%9.3%10.7%

80+ Age Cohorts by County#13

Percentage of population aged 80 and older (%):
2.5%3.9%5.3%6.7%8.0%9.4%
Road Data ©OpenStreetMap

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Age Cohorts by Place in Iowa

There are 1,008 places in Iowa. This section compares the 50 most populous of those to each other, Iowa, and other entities that contain or substantially overlap with Iowa. The least populous of the compared places has a population of 7,876.

Children by Place#14

Percentage of population aged 0 to 17 (%):
Scope: population of Iowa, selected places in Iowa, and entities that contain Iowa
0%10%20%30%Count#GrimesWaukeeDenisonPerryNorth LibertyAltoonaAnkenyNorwalkStorm LakeCliveJohnstonMarshalltownMuscatineMarionSioux CityBettendorfUrbandaleDes MoinesLe MarsIndianolaKeokukCarrollBurlingtonWaterlooWest North CentralDavenportSpencerPleasant HillIowaCrestonCouncil BluffsOttumwaMidwestNewtonUnited States of AmericaUnited StatesCedar RapidsPellaCoralvilleOskaloosaWest Des MoinesW Des MoinesMount PleasantMt PleasantClintonBooneFort MadisonMason CityFort DodgeDubuqueWaverlyGrinnellFairfieldCedar FallsIowa CityAmesDecorah32.431395%32.431395%32.4%3,380131.772339%31.772339%31.8%5,387230.290656%30.290656%30.3%2,522328.504317%28.504317%28.5%2,245428.208902%28.208902%28.2%4,791527.875629%27.875629%27.9%4,653627.824687%27.824687%27.8%14,86214.9k727.473854%27.473854%27.5%2,732827.405275%27.405275%27.4%2,951927.388086%27.388086%27.4%4,6621027.043251%27.043251%27.0%5,2711126.091833%26.091833%26.1%7,2111226.006943%26.006943%26.0%6,2181325.896554%25.896554%25.9%9,6331425.773595%25.773595%25.8%21,30621.3k1525.530701%25.530701%25.5%8,9481625.426908%25.426908%25.4%10,57210.6k1724.908508%24.908508%24.9%53,02053.0k1824.740484%24.740484%24.7%2,4311924.460666%24.460666%24.5%3,7532023.852089%23.852089%23.9%2,5352123.813814%23.813814%23.8%2,3792223.799623%23.799623%23.8%6,0672323.725441%23.725441%23.7%16,21816.2k2423.689691%23.689691%23.7%4,971,0164.97M23.631299%23.631299%23.6%24,17624.2k2523.630505%23.630505%23.6%2,6402623.601956%23.601956%23.6%2,2202723.418418%23.418418%23.4%727,514728k23.257585%23.257585%23.3%1,8322823.227866%23.227866%23.2%14,47714.5k2923.218261%23.218261%23.2%5,7373023.217458%23.217458%23.2%15,712,75815.7M23.127899%23.127899%23.1%3,4903123.108006%23.108006%23.1%73,612,43873.6M22.994202%22.994202%23.0%29,78629.8k3222.908560%22.908560%22.9%2,3553322.581930%22.581930%22.6%4,5343422.352227%22.352227%22.4%2,5793522.340322%22.340322%22.3%13,76713.8k3621.705335%21.705335%21.7%1,8433721.500688%21.500688%21.5%5,6223821.302244%21.302244%21.3%2,6863921.069737%21.069737%21.1%2,2694021.048428%21.048428%21.0%5,7984121.014375%21.014375%21.0%5,1754220.761937%20.761937%20.8%12,15312.2k4320.549308%20.549308%20.5%2,0654419.304214%19.304214%19.3%1,7594519.201368%19.201368%19.2%1,9094617.796610%17.796610%17.8%7,2664715.598536%15.598536%15.6%11,29111.3k4812.309397%12.309397%12.3%7,8874910.732624%10.732624%10.7%85750
Count number of children
# rank of place out of 50 by %

Age Cohorts by Metro Area in Iowa

There are 26 metro areas that are fully or partially contained within Iowa (21 fully and 5 partially). This section compares all 26 of those to each other, Iowa, and other entities that contain or substantially overlap with Iowa.

Children by Metro Area#23

Percentage of population aged 0 to 17 (%):
Scope: population of Iowa, selected metro areas in Iowa, and entities that contain Iowa
0%5%10%15%20%25%Count#Sioux City Metro AreaSioux CityOmaha and Council Bluffs Metro AreaOmaha AreaDes Moines and West Des Moines Metro AreaDes MoinesMuscatine Metro AreaMuscatineStorm Lake Metro AreaStorm LakeMarshalltown Metro AreaMarshalltownCarroll Metro AreaCarroll AreaPella Metro AreaPella AreaOttumwa Metro AreaOttumwa AreaCedar Rapids Metro AreaCedar RapidsWest North CentralOskaloosa Metro AreaOskaloosaIowaMidwestDavenport, Moline, and Rock Island Metro AreaDavenportUnited States of AmericaUnited StatesDubuque Metro AreaDubuque AreaClinton Metro AreaClinton AreaSpencer Metro AreaSpencer AreaBurlington Metro AreaBurlingtonBoone Metro AreaBoone AreaNewton Metro AreaNewton AreaWaterloo and Cedar Falls Metro AreaWaterloo AreaFort Madison and Keokuk Metro AreaFort MadisonFort Dodge Metro AreaFort DodgeMason City Metro AreaMason CityIowa City Metro AreaIowa CityFairfield Metro AreaFairfieldSpirit Lake Metro AreaSpirit LakeAmes Metro AreaAmes Area26.290401%26.290401%26.3%44,36444.4k125.902873%25.902873%25.9%234,378234k225.663215%25.663215%25.7%156,996157k325.406878%25.406878%25.4%10,91210.9k425.375397%25.375397%25.4%5,188525.003069%25.003069%25.0%10,18510.2k624.169302%24.169302%24.2%4,968724.119649%24.119649%24.1%8,007823.801409%23.801409%23.8%10,47510.5k923.789055%23.789055%23.8%62,86962.9k1023.689691%23.689691%23.7%4,971,0164.97M23.588963%23.588963%23.6%5,2661123.418418%23.418418%23.4%727,514728k23.217458%23.217458%23.2%15,712,75815.7M23.181078%23.181078%23.2%88,85488.9k1223.108006%23.108006%23.1%73,612,43873.6M23.102149%23.102149%23.1%22,26122.3k1323.017594%23.017594%23.0%11,04211.0k1422.812234%22.812234%22.8%3,7591522.347069%22.347069%22.3%10,52110.5k1622.335391%22.335391%22.3%5,8991722.187117%22.187117%22.2%8,1461821.775376%21.775376%21.8%36,98737.0k1921.569274%21.569274%21.6%13,08513.1k2021.511471%21.511471%21.5%7,9702120.904355%20.904355%20.9%10,63310.6k2220.759683%20.759683%20.8%34,07134.1k2319.516476%19.516476%19.5%3,4472419.400446%19.400446%19.4%3,3072517.082481%17.082481%17.1%16,20016.2k26
Count number of children
# rank of metro area out of 26 by %

Age Cohorts by County in Iowa

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

Children by County#32

Percentage of population aged 0 to 17 (%):
Scope: population of Iowa, selected counties in Iowa, and entities that contain Iowa
0%10%20%Count#Dallas CountyDallasSioux CountySiouxBuchanan CountyBuchananWoodbury CountyWoodburyMadison CountyMadisonCrawford CountyCrawfordMuscatine 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%4,446625.406878%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 Subdivision in Iowa

There are 1,662 county subdivisions in Iowa. This section compares the 50 most populous of those to each other, Iowa, and other entities that contain or substantially overlap with Iowa. The least populous of the compared county subdivisions has a population of 9,112.

Children by County Subdivision#41

Percentage of population aged 0 to 17 (%):
Scope: population of Iowa, selected county subdivisions in Iowa, and entities that contain Iowa
0%10%20%30%Count#Jefferson TownshipJeffersonWalnut TownshipWalnutPenn TownshipCrocker TownshipCrockerTaylor TownshipTaylorClay TownshipStorm LakeLee TownshipBoone TownshipBooneWebster TownshipWebsterSioux CityMarion TownshipMarionBloomfield TownshipBloomfieldBloomington TownshipBloomingtonPleasant Valley TownshipPleasant VlyLewis TownshipLewisAmerica TownshipAmericaIndianolaLake Prairie TownshipLk PrairieKeokukCarrollBurlingtonWaterlooWest North CentralDavenportSpencerKane TownshipIowaKnoxville TownshipKnoxvilleMidwestUnited States of AmericaUnited StatesCedar RapidsFranklin TownshipFranklinDes Moines TownshipDes MoinesFour Mile TownshipFour MileCenter TownshipCtrNewton TownshipNewtonOskaloosaWalnut TownshipWalnutTimber Creek TownshipTimber CrkMonroe TownshipMonroeClintonDes Moines TownshipDes MoinesMason CityFort DodgeMadison TownshipMadisonDubuqueWaverlyGrinnellFairfieldCedar FallsIowa CityDecorah TownshipDecorahWashington TownshipWashington33.785694%33.785694%33.8%3,585132.167912%32.167912%32.2%8,483229.094891%29.094891%29.1%7,972328.859738%28.859738%28.9%15,44415.4k428.192913%28.192913%28.2%5,267527.901677%27.901677%27.9%5,142627.405275%27.405275%27.4%2,951726.817784%26.817784%26.8%17,48617.5k826.704371%26.704371%26.7%6,091925.906350%25.906350%25.9%14,94914.9k1025.773595%25.773595%25.8%21,30621.3k1125.693630%25.693630%25.7%10,52010.5k1225.600577%25.600577%25.6%8,1631325.385249%25.385249%25.4%6,1611425.264892%25.264892%25.3%9,2041525.083790%25.083790%25.1%3,2931624.944148%24.944148%24.9%2,5681724.460666%24.460666%24.5%3,7531824.273694%24.273694%24.3%3,0581923.852089%23.852089%23.9%2,5352023.813814%23.813814%23.8%2,3792123.799623%23.799623%23.8%6,0672223.725441%23.725441%23.7%16,21816.2k2323.689691%23.689691%23.7%4,971,0164.97M23.631299%23.631299%23.6%24,17624.2k2423.630505%23.630505%23.6%2,6402523.501754%23.501754%23.5%12,39612.4k2623.418418%23.418418%23.4%727,514728k23.311076%23.311076%23.3%2,3742723.217458%23.217458%23.2%15,712,75815.7M23.108006%23.108006%23.1%73,612,43873.6M22.994202%22.994202%23.0%29,78629.8k2822.857143%22.857143%22.9%5,3922922.683503%22.683503%22.7%23,15623.2k3022.572125%22.572125%22.6%2,2223122.507928%22.507928%22.5%5,8913222.476089%22.476089%22.5%3,3843322.352227%22.352227%22.4%2,5793422.269623%22.269623%22.3%15,03415.0k3522.239929%22.239929%22.2%2,5123621.771899%21.771899%21.8%2,8313721.500688%21.500688%21.5%5,6223821.077004%21.077004%21.1%2,8223921.048428%21.048428%21.0%5,7984021.014375%21.014375%21.0%5,1754120.951206%20.951206%21.0%2,2074220.761937%20.761937%20.8%12,15312.2k4320.549308%20.549308%20.5%2,0654419.304214%19.304214%19.3%1,7594519.201368%19.201368%19.2%1,9094617.796610%17.796610%17.8%7,2664715.598536%15.598536%15.6%11,29111.3k4813.333333%13.333333%13.3%1,344498.197348%8.197348%8.2%3,64750
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 Iowa to all of the states in the United States and to those entities that contain or substantially overlap with Iowa.

Children by State#50

Percentage of population aged 0 to 17 (%):
Scope: population of Iowa, selected other states in the United States, and entities that contain Iowa
0%10%20%30%Count#UtahTexasIdahoAlaskaKansasNebraskaGeorgiaSouth DakotaOklahomaMississippiNew MexicoArizonaIndianaLouisianaArkansasWyomingWest North CentralCaliforniaMinnesotaIowaNevadaIllinoisColoradoMidwestUnited States of AmericaUnited StatesMissouriNorth CarolinaN CarolinaKentuckyTennesseeAlabamaOhioNorth 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%138,844139k1623.689691%23.689691%23.7%4,971,0164.97M23.646283%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%2,287,8262.29M2422.987138%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 Iowa to all of the states in the Midwest and to those entities that contain or substantially overlap with Iowa.

Children by State#59

Percentage of population aged 0 to 17 (%):
Scope: population of Iowa, selected other states in the Midwest, and entities that contain Iowa
0%5%10%15%20%Count#KansasNebraskaSouth DakotaIndianaWest North CentralMinnesotaIowaIllinoisMidwestUnited States of AmericaUnited StatesMissouriOhioNorth 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%1,581,9921.58M423.689691%23.689691%23.7%4,971,0164.97M23.520988%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%1,395,1241.40M822.783062%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.

More Topics to Explore

Demographics

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More Maps to Explore

Major Counties:
Black Hawk, Dallas, Dubuque, Johnson, Linn, Polk, Pottawattamie, Scott, Story, Woodbury
Counties:
Adair, Adams, Allamakee, Appanoose, Audubon, Benton, Black Hawk, Boone, Bremer, Buchanan, Buena Vista, Butler, Calhoun, Carroll, Cass, Cedar, Cerro Gordo, Cherokee, Chickasaw, Clarke, Clay, Clayton, Clinton, Crawford, Dallas, Davis, Decatur, Delaware, Des Moines, Dickinson, Dubuque, Emmet, Fayette, Floyd, Franklin, Fremont, Greene, Grundy, Guthrie, Hamilton, Hancock, Hardin, Harrison, Henry, Howard, Humboldt, Ida, Iowa, Jackson, Jasper, Jefferson, Johnson, Jones, Keokuk, Kossuth, Lee, Linn, Louisa, Lucas, Lyon, Madison, Mahaska, Marion, Marshall, Mills, Mitchell, Monona, Monroe, Montgomery, Muscatine, O'Brien, Osceola, Page, Palo Alto, Plymouth, Pocahontas, Polk, Pottawattamie, Poweshiek, Ringgold, Sac, Scott, Shelby, Sioux, Story, Tama, Taylor, Union, Van Buren, Wapello, Warren, Washington, Wayne, Webster, Winnebago, Winneshiek, Woodbury, Worth, Wright
Metro Areas:
Ames Area, Boone Area, Burlington Area, Carroll Area, Cedar Rapids Area, Clinton Area, Davenport Area, Des Moines Area, Dubuque Area, Fairfield Area, Fort Dodge Area, Fort Madison Area, Iowa City Area, Marshalltown Area, Mason City Area, Muscatine Area, Newton Area, Omaha Area, Oskaloosa Area, Ottumwa Area, Pella Area, Sioux City Area, Spencer Area, Spirit Lake Area, Storm Lake Area, Waterloo Area
Major Cities:
Altoona, Ames, Ankeny, Bettendorf, Boone, Burlington, Carroll, Cedar Falls, Cedar Rapids, Clinton, Clive, Coralville, Council Bluffs, Creston, Davenport, Decorah, Denison, Des Moines, Dubuque, Fairfield, Fort Dodge, Fort Madison, Grimes, Grinnell, Indianola, Iowa City, Johnston, Keokuk, Le Mars, Marion, Marshalltown, Mason City, Mount Pleasant, Muscatine, Newton, North Liberty, Norwalk, Oskaloosa, Ottumwa, Pella, Perry, Pleasant Hill, Sioux City, Spencer, Storm Lake, Urbandale, Waterloo, Waukee, Waverly, West Des Moines
Congressional Districts:
IA-1, IA-2, IA-3, IA-4
State House Districts:
IA-1, IA-2, IA-3, IA-4, IA-5, IA-6, IA-7, IA-8, IA-9, IA-10, IA-11, IA-12, IA-13, IA-14, IA-15, IA-16, IA-17, IA-18, IA-19, IA-20, IA-21, IA-22, IA-23, IA-24, IA-25, IA-26, IA-27, IA-28, IA-29, 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, IA-44, IA-45, IA-46, IA-47, IA-48, IA-49, IA-50, IA-51, IA-52, IA-53, IA-54, IA-55, IA-56, IA-57, IA-58, IA-59, IA-60, IA-61, IA-62, IA-63, IA-64, IA-65, IA-66, IA-67, IA-68, IA-69, IA-70, IA-71, IA-72, IA-73, IA-74, IA-75, IA-76, IA-77, IA-78, IA-79, IA-80, IA-81, IA-82, IA-83, IA-84, IA-85, IA-86, IA-87, IA-88, IA-89, IA-90, IA-91, IA-92, IA-93, IA-94, IA-95, IA-96, IA-97, IA-98, IA-99, IA-100
State Senate Districts:
IA-1, IA-2, IA-3, IA-4, IA-5, IA-6, IA-7, IA-8, IA-9, IA-10, IA-11, IA-12, IA-13, IA-14, IA-15, IA-16, IA-17, IA-18, IA-19, IA-20, IA-21, IA-22, IA-23, IA-24, IA-25, IA-26, IA-27, IA-28, IA-29, 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, IA-44, IA-45, IA-46, IA-47, IA-48, IA-49, IA-50
Neighboring States:
Illinois, Minnesota, Missouri, Nebraska, South Dakota, Wisconsin