Age and Sex in Steamboat Rock, Iowa (City)

Age Structure#1

Percentage in each age cohort per year of age.1 Gray areas represent percentile bands from the places in Iowa.
Scope: population of Iowa, Steamboat Rock, and other places in Iowa
Steamboat Rock
Iowa
Percentile:
0th - 100th
10th - 90th
20th - 80th
30th - 70th
40th - 60th
0.0%0.5%1.0%1.5%2.0%2.5%Count%85+80-8475-7970-7467-6965-6662-6460-6155-5950-5445-4940-4435-3930-3425-2922-24212018-1915-1710-145-90-472.244%2.24%72.244%2.24%113.526%3.53%154.808%4.81%41.282%1.28%165.128%5.13%154.808%4.81%144.487%4.49%3310.577%10.6%175.449%5.45%103.205%3.21%72.244%2.24%299.295%9.29%3611.538%11.5%113.526%3.53%123.846%3.85%51.603%1.60%20.641%0.64%20.641%0.64%72.244%2.24%165.128%5.13%216.731%6.73%154.808%4.81%

Age and Sex#2

Percentage in each age cohort per year of age.1
Scope: population of Iowa and Steamboat Rock
Female Male
Iowa
Steamboat Rock
Shaded bar tips show excess over facing bar.
0.5%0.0%0.5%Count%Senior2Older Adult3Younger Adult4College5Children6-0.178063%-0.178063%-0.192490%-0.053856%-0.356125%0.36%0.178063%0.192490%0.178063%0.18%6019.231%19.2%-0.435897%-0.638182%-0.435897%0.44%0.435897%0.358974%0.638182%0.001353%0.794872%0.79%9630.769%30.8%-0.712251%-0.142450%-0.619125%-0.854701%0.85%0.712251%0.619125%0.025145%0.712251%0.71%8828.205%28.2%-0.320513%-0.735381%-0.320513%0.32%0.320513%0.080128%0.735381%0.054111%0.400641%0.40%92.885%2.88%-0.445157%-0.634612%-0.445157%0.45%0.445157%0.160256%0.634612%0.031800%0.605413%0.61%5918.910%18.9%

Detailed Age and Sex#3

Percentage in each age cohort per year of age.1
Scope: population of Iowa and Steamboat Rock
Female Male
Iowa
Steamboat Rock
Shaded bar tips show excess over facing bar.
2%1%0%1%2%Count%85+80-8475-7970-7467-6965-6662-6460-6155-5950-5445-4940-4435-3930-3425-2922-24212018-1915-1710-145-90-4-0.000000%-0.140224%-0.051411%-0.053545%-0.140224%0.1%0.000000%0.051411%0.000000%0.0%72.244%2.24%-0.128205%-0.192308%-0.174468%-0.075066%-0.320513%0.3%0.128205%0.174468%0.128205%0.1%72.244%2.24%-0.256410%-0.192308%-0.248144%-0.065989%-0.448718%0.4%0.256410%0.248144%0.256410%0.3%113.526%3.53%-0.384615%-0.334521%-0.038389%-0.384615%0.4%0.384615%0.192308%0.334521%0.576923%0.6%154.808%4.81%-0.213675%-0.424367%-0.036879%-0.213675%0.2%0.213675%0.000000%0.424367%0.213675%0.2%41.282%1.28%-0.480769%-1.602564%-0.524144%-0.037115%-2.083333%2.1%0.480769%0.524144%0.480769%0.5%165.128%5.13%-0.747863%-0.595229%-0.000536%-0.747863%0.7%0.747863%0.106838%0.595229%0.854701%0.9%154.808%4.81%-1.121795%-0.663219%-0.010462%-1.121795%1.1%1.121795%0.000000%0.663219%1.121795%1.1%144.487%4.49%-0.448718%-0.675983%-0.012541%-0.448718%0.4%0.448718%1.217949%0.675983%1.666667%1.7%3310.577%10.6%-0.512821%-0.064103%-0.690906%-0.006245%-0.576923%0.6%0.512821%0.690906%0.512821%0.5%175.449%5.45%-0.256410%-0.607007%-0.256410%0.3%0.256410%0.128205%0.607007%0.012683%0.384615%0.4%103.205%3.21%-0.000000%-0.571295%0.000000%0.0%0.000000%0.448718%0.571295%0.017376%0.448718%0.4%72.244%2.24%-0.897436%-0.064103%-0.587487%-0.961538%1.0%0.897436%0.587487%0.012483%0.897436%0.9%299.295%9.29%-1.089744%-0.628104%-1.089744%1.1%1.089744%0.128205%0.628104%0.026170%1.217949%1.2%3611.538%11.5%-0.320513%-0.064103%-0.601386%-0.384615%0.4%0.320513%0.601386%0.033864%0.320513%0.3%113.526%3.53%-0.213675%-0.854701%-0.686455%-1.068376%1.1%0.213675%0.686455%0.030011%0.213675%0.2%123.846%3.85%-0.641026%-0.733441%-0.641026%0.6%0.641026%0.320513%0.733441%0.046900%0.961538%1.0%51.603%1.60%-0.000000%-0.770169%0.000000%0.0%0.000000%0.641026%0.770169%0.056074%0.641026%0.6%20.641%0.64%-0.000000%-0.320513%-0.718956%-0.320513%0.3%0.000000%0.718956%0.056734%0.000000%0.0%20.641%0.64%-0.213675%-0.640338%-0.213675%0.2%0.213675%0.320513%0.640338%0.030076%0.534188%0.5%72.244%2.24%-0.256410%-0.639003%-0.256410%0.3%0.256410%0.512821%0.639003%0.033033%0.769231%0.8%165.128%5.13%-0.448718%-0.643465%-0.448718%0.4%0.448718%0.448718%0.643465%0.031842%0.897436%0.9%216.731%6.73%-0.192308%-0.576923%-0.617932%-0.769231%0.8%0.192308%0.617932%0.031559%0.192308%0.2%154.808%4.81%

Detailed Sex Ratio#4

Percentage more males or females in selected age cohorts.
Scope: population of Iowa and Steamboat Rock
More Females More Males
Iowa
Steamboat Rock
1,000%500%0%M:FFM85+80-8475-7970-7467-6965-6662-6460-6155-5950-5445-4935-3930-3425-2922-242118-1915-1710-145-90-4-1,000.000000%-104.151992%-1,000.000000%> 1000%0.0000100.000%100%0.000%0%-150.000000%-43.025830%-150.000000%150.0%0.4000.4071.429%71.4%28.571%28.6%-75.000000%-26.592985%-75.000000%75.0%0.5710.5763.636%63.6%36.364%36.4%-11.475915%50.000000%50.000000%50.0%1.5001.5040.000%40.0%60.000%60.0%0.000000%-8.690265%0.000000%0.0%1.0001.0050.000%50.0%50.000%50.0%-333.333333%-7.081005%-333.333333%333.3%0.2310.2381.250%81.3%18.750%18.8%-0.090132%14.285714%14.285714%14.3%1.1431.1446.667%46.7%53.333%53.3%0.000000%-1.577402%0.000000%0.0%1.0001.0050.000%50.0%50.000%50.0%-1.855238%271.428571%271.428571%271.4%3.7143.7121.212%21.2%78.788%78.8%-12.500000%-0.903856%-12.500000%12.5%0.8890.8952.941%52.9%47.059%47.1%50.000000%2.089388%50.000000%50.0%1.5001.5040.000%40.0%60.000%60.0%-7.142857%-7.142857%7.1%2.124838%0.9330.9351.724%51.7%48.276%48.3%11.764706%4.166539%11.764706%11.8%1.1181.1247.222%47.2%52.778%52.8%-20.000000%-20.000000%20.0%5.630908%0.8330.8354.545%54.5%45.455%45.5%-400.000000%-400.000000%400.0%4.371952%0.2000.2083.333%83.3%16.667%16.7%50.000000%6.394558%50.000000%50.0%1.5001.5040.000%40.0%60.000%60.0%-1,000.000000%-1,000.000000%> 1000%7.891202%0.0000100.000%100%0.000%0%150.000000%4.696873%150.000000%150.0%2.5002.5028.571%28.6%71.429%71.4%200.000000%5.169461%200.000000%200.0%3.0003.0025.000%25.0%75.000%75.0%100.000000%4.948524%100.000000%100.0%2.0002.0033.333%33.3%66.667%66.7%-300.000000%-300.000000%300.0%5.107154%0.2500.2580.000%80.0%20.000%20.0%

Map of Age Cohorts by Block in Steamboat Rock

Children Age Cohorts by Block#5

Percentage of population aged 0 to 17 (%):
0%12%24%36%48%61%

College Age Cohorts by Block#6

Percentage of population aged 18 to 21 (%):
0%7%13%20%27%34%

20s Age Cohorts by Block#7

Percentage of population aged 22 to 29 (%):
0%20%40%60%80%100%

30s Age Cohorts by Block#8

Percentage of population aged 30 to 39 (%):
0%13%27%40%53%67%

40s Age Cohorts by Block#9

Percentage of population aged 40 to 49 (%):
0%8%16%24%32%40%

50s Age Cohorts by Block#10

Percentage of population aged 50 to 59 (%):
0%20%40%60%80%100%

60s Age Cohorts by Block#11

Percentage of population aged 60 to 69 (%):
0%16%32%48%64%80%

70s Age Cohorts by Block#12

Percentage of population aged 70 to 79 (%):
0%10%20%30%40%50%

80+ Age Cohorts by Block#13

Percentage of population aged 80 and older (%):
0%10%20%30%40%50%
Road Data ©OpenStreetMap

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Age Cohorts by Place in Hardin County

There are 13 places in Hardin County. This section compares Steamboat Rock to all of the places in Hardin County and to those entities that contain or substantially overlap with Steamboat Rock.

Children by Place#14

Percentage of population aged 0 to 17 (%):
Scope: population of Steamboat Rock, selected other places in Hardin County, and entities that contain Steamboat Rock
0%10%20%30%Count#BuckeyeWhittenRadcliffeHubbardEldoraUnionWest North CentralIowaMidwestUnited States of AmericaUnited StatesHardin CountyHardinNew ProvidenceIowa FallsSteamboat RockAckleyOwasaZIP Code 50672ZIP 50672AldenAGWSR Community School DistrictAGWSRClay Township480100Tract 480100Garden City480100-2B.G. 480100-236.734694%36.734694%36.7%36130.635838%30.635838%30.6%53226.655629%26.655629%26.7%161325.589226%25.589226%25.6%228425.535111%25.535111%25.5%680524.845996%24.845996%24.8%121623.689691%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%73,612,43873.6M22.102286%22.102286%22.1%3,82921.611722%21.611722%21.6%59720.788253%20.788253%20.8%1,076818.910256%18.910256%18.9%59918.814730%18.814730%18.8%3271018.518519%18.518519%18.5%101118.323587%18.323587%18.3%9418.205462%18.205462%18.2%1401218.085337%18.085337%18.1%83517.730496%17.730496%17.7%10017.421073%17.421073%17.4%45816.161616%16.161616%16.2%161316.005666%16.005666%16.0%113

Age Cohorts by Place in Iowa

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

Children by Place#23

Percentage of population aged 0 to 17 (%):
Scope: population of Steamboat Rock, selected other places in Iowa, and entities that contain Steamboat Rock
0%10%20%30%Count#GrimesWaukeeDenisonPerryNorth LibertyAltoonaAnkenyNorwalkStorm LakeCliveJohnstonMarshalltownMuscatineMarionSioux CityBettendorfUrbandaleDes MoinesLe MarsIndianolaKeokukCarrollBurlingtonWaterlooWest North CentralDavenportSpencerPleasant HillIowaCrestonCouncil BluffsOttumwaMidwestNewtonUnited States of AmericaUnited StatesCedar RapidsPellaCoralvilleOskaloosaWest Des MoinesW Des MoinesHardin CountyHardinMount PleasantMt PleasantClintonBooneFort MadisonMason CityFort DodgeDubuqueWaverlyGrinnellFairfieldSteamboat RockZIP Code 50672ZIP 50672AGWSR Community School DistrictAGWSRCedar FallsClay Township480100Tract 480100480100-2B.G. 480100-2Iowa 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%13,76713.8k3622.102286%22.102286%22.1%3,82921.705335%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%1,9094618.910256%18.910256%18.9%5918.323587%18.323587%18.3%9418.085337%18.085337%18.1%83517.796610%17.796610%17.8%7,2664717.730496%17.730496%17.7%10017.421073%17.421073%17.4%45816.005666%16.005666%16.0%11315.598536%15.598536%15.6%11,29111.3k4812.309397%12.309397%12.3%7,8874910.732624%10.732624%10.7%85750

Age Cohorts by Place in the Midwest

There are 9,721 places in the Midwest. This section compares Steamboat Rock to the 50 most populous places in the Midwest and to those entities that contain or substantially overlap with Steamboat Rock. The least populous of the compared places has a population of 95,520.

Children by Place#32

Percentage of population aged 0 to 17 (%):
Scope: population of Steamboat Rock, selected other places in the Midwest, and entities that contain Steamboat Rock
0%10%20%30%Count#AuroraDearbornOlatheJolietKansas CityElginSouth BendMilwaukeeNapervilleKenoshaFlintWichitaFort WayneRockfordSt. PaulDetroitPeoriaOmahaDes MoinesIndianapolisSioux FallsGreen BayRochesterGrand RapidsLansingTopekaWest North CentralDavenportIowaKansas CityToledoOverland ParkMidwestUnited States of AmericaUnited StatesClevelandCedar RapidsWarrenColumbusLincolnIndependenceSpringfieldDaytonCincinnatiHardin CountyHardinChicagoEvansvilleAkronSt. LouisSterling HeightsSterling HtsMinneapolisFargoSteamboat RockColumbiaZIP Code 50672ZIP 50672SpringfieldAGWSR Community School DistrictAGWSRClay Township480100Tract 480100Madison480100-2B.G. 480100-2Ann Arbor30.107463%30.107463%30.1%60,48860.5k129.337312%29.337312%29.3%28,02328.0k229.310098%29.310098%29.3%38,92038.9k328.547605%28.547605%28.5%42,11242.1k428.278188%28.278188%28.3%42,34842.3k527.918405%27.918405%27.9%31,24631.2k627.834358%27.834358%27.8%28,12328.1k726.475933%26.475933%26.5%158,504159k826.450555%26.450555%26.5%38,56238.6k926.120262%26.120262%26.1%26,08526.1k1026.042783%26.042783%26.0%25,76125.8k1125.967894%25.967894%26.0%100,764101k1225.839420%25.839420%25.8%67,42967.4k1325.506528%25.506528%25.5%38,15738.2k1425.318684%25.318684%25.3%75,23775.2k1525.218343%25.218343%25.2%172,353172k1625.069403%25.069403%25.1%29,07829.1k1725.047396%25.047396%25.0%110,978111k1824.908508%24.908508%24.9%53,02053.0k1924.805415%24.805415%24.8%210,021210k2024.789140%24.789140%24.8%41,61741.6k2124.560033%24.560033%24.6%25,77625.8k2224.207332%24.207332%24.2%26,96627.0k2323.914961%23.914961%23.9%46,36846.4k2423.889765%23.889765%23.9%27,41927.4k2523.720503%23.720503%23.7%30,23730.2k2623.689691%23.689691%23.7%4,971,0164.97M23.631299%23.631299%23.6%24,17624.2k2723.418418%23.418418%23.4%727,514728k23.365136%23.365136%23.4%110,229110k2823.297870%23.297870%23.3%65,43365.4k2923.297511%23.297511%23.3%42,81542.8k3023.217458%23.217458%23.2%15,712,75815.7M23.108006%23.108006%23.1%73,612,43873.6M22.998471%22.998471%23.0%89,50289.5k3122.994202%22.994202%23.0%29,78629.8k3222.854245%22.854245%22.9%30,86930.9k3322.726089%22.726089%22.7%190,226190k3422.619388%22.619388%22.6%61,75561.8k3522.480528%22.480528%22.5%26,35126.4k3622.468628%22.468628%22.5%26,23126.2k3722.121536%22.121536%22.1%31,22331.2k3822.113949%22.113949%22.1%65,90265.9k3922.102286%22.102286%22.1%3,82921.913385%21.913385%21.9%594,733595k4021.775858%21.775858%21.8%26,16526.2k4121.641949%21.641949%21.6%42,96143.0k4220.242382%20.242382%20.2%63,97264.0k4320.047997%20.047997%20.0%26,39826.4k4419.962439%19.962439%20.0%80,78280.8k4519.917206%19.917206%19.9%23,09423.1k4618.910256%18.910256%18.9%5918.454317%18.454317%18.5%21,62221.6k4718.323587%18.323587%18.3%9418.124235%18.124235%18.1%29,93029.9k4818.085337%18.085337%18.1%83517.730496%17.730496%17.7%10017.421073%17.421073%17.4%45817.137062%17.137062%17.1%42,16342.2k4916.005666%16.005666%16.0%11313.862661%13.862661%13.9%16,37016.4k50

Age Cohorts by Place in the United States

There are 29,322 places in the United States. This section compares Steamboat Rock to the 50 most populous places in the United States and to those entities that contain or substantially overlap with Steamboat Rock. The least populous of the compared places has a population of 383,899.

Children by Place#41

Percentage of population aged 0 to 17 (%):
Scope: population of Steamboat Rock, selected other places in the United States, and entities that contain Steamboat Rock
0%10%20%Count#FresnoFort WorthEl PasoPhoenixMilwaukeeArlingtonWichitaOklahoma CitySan AntonioDallasHoustonMemphisDetroitOmahaIndianapolisTulsaCharlotteMesaLong BeachLas VegasColorado SpringsColorado SpgsSacramentoWest North CentralSan JoseIowaKansas CityMidwestAlbuquerqueJacksonvilleUnited States of AmericaUnited StatesClevelandLouisvilleVirginia BeachVirginia BchColumbusPhiladelphiaHardin CountyHardinChicagoRaleighTucsonLos AngelesNashville-DavidsonAustinNew YorkBaltimoreDenverSan DiegoOaklandMinneapolisSteamboat RockAtlantaPortlandZIP Code 50672ZIP 50672AGWSR Community School DistrictAGWSRMiamiClay Township480100Tract 480100WashingtonBoston480100-2B.G. 480100-2SeattleSan Francisco29.163869%29.163869%29.2%149,846150k128.577574%28.577574%28.6%233,173233k227.481425%27.481425%27.5%186,340186k326.837431%26.837431%26.8%417,409417k426.475933%26.475933%26.5%158,504159k526.113118%26.113118%26.1%100,248100k625.967894%25.967894%26.0%100,764101k725.770022%25.770022%25.8%159,778160k825.703473%25.703473%25.7%369,965370k925.650464%25.650464%25.7%327,924328k1025.319180%25.319180%25.3%567,297567k1125.310548%25.310548%25.3%166,001166k1225.218343%25.218343%25.2%172,353172k1325.047396%25.047396%25.0%110,978111k1424.805415%24.805415%24.8%210,021210k1524.623036%24.623036%24.6%98,46998.5k1624.540635%24.540635%24.5%198,493198k1724.297490%24.297490%24.3%114,309114k1824.070388%24.070388%24.1%113,081113k1923.976553%23.976553%24.0%147,047147k2023.968990%23.968990%24.0%107,563108k2123.750232%23.750232%23.8%115,077115k2223.689691%23.689691%23.7%4,971,0164.97M23.475697%23.475697%23.5%236,955237k2323.418418%23.418418%23.4%727,514728k23.365136%23.365136%23.4%110,229110k2423.217458%23.217458%23.2%15,712,75815.7M23.208388%23.208388%23.2%129,238129k2523.157634%23.157634%23.2%198,372198k2623.108006%23.108006%23.1%73,612,43873.6M22.998471%22.998471%23.0%89,50289.5k2722.928906%22.928906%22.9%140,227140k2822.855339%22.855339%22.9%102,788103k2922.726089%22.726089%22.7%190,226190k3022.168125%22.168125%22.2%345,809346k3122.102286%22.102286%22.1%3,82921.913385%21.913385%21.9%594,733595k3221.865242%21.865242%21.9%96,49796.5k3321.726884%21.726884%21.7%114,628115k3421.605988%21.605988%21.6%846,711847k3521.537938%21.537938%21.5%138,655139k3621.399702%21.399702%21.4%194,262194k3721.199117%21.199117%21.2%1,793,8611.79M3821.123671%21.123671%21.1%131,178131k3920.705017%20.705017%20.7%137,337137k4020.651042%20.651042%20.7%283,913284k4120.390011%20.390011%20.4%84,01584.0k4219.962439%19.962439%20.0%80,78280.8k4318.910256%18.910256%18.9%5918.722638%18.722638%18.7%85,44685.4k4418.415892%18.415892%18.4%114,287114k4518.323587%18.323587%18.3%9418.085337%18.085337%18.1%83517.996773%17.996773%18.0%77,85877.9k4617.730496%17.730496%17.7%10017.421073%17.421073%17.4%45817.402645%17.402645%17.4%114,685115k4716.549062%16.549062%16.5%108,939109k4816.005666%16.005666%16.0%11315.290895%15.290895%15.3%102,273102k4913.481174%13.481174%13.5%114,628115k50

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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