Age and Sex in the Round Prairie Township, Jefferson County, Iowa (Township)

Age Structure#1

Percentage in each age cohort per year of age.1 Gray areas represent percentile bands from the county subdivisions in Jefferson County.
Scope: population of Jefferson County, the Round Prairie Township, and other county subdivisions in Jefferson County
Round Prairie Township
Jefferson County
Percentile:
0th - 100th
10th - 90th
20th - 80th
30th - 70th
40th - 60th
0%1%2%3%Count%85+80-8475-7970-7467-6965-6662-6460-6155-5950-5445-4940-4435-3930-3425-2922-24212018-1915-1710-145-90-400.000%0%82.388%2.39%185.373%5.37%00.000%0%102.985%2.99%00.000%0%133.881%3.88%102.985%2.99%5817.313%17.3%205.970%5.97%92.687%2.69%00.000%0%195.672%5.67%5817.313%17.3%216.269%6.27%102.985%2.99%133.881%3.88%00.000%0%00.000%0%113.284%3.28%00.000%0%236.866%6.87%3410.149%10.1%

Age and Sex#2

Percentage in each age cohort per year of age.1
Scope: population of Jefferson County and the Round Prairie Township
Female Male
Jefferson County
Round Prairie Township
Shaded bar tips show excess over facing bar.
1%0%1%Count%Senior2Older Adult3Younger Adult4College5Children6-0.140962%-0.016584%-0.227890%-0.046868%-0.157546%0.2%0.140962%0.227890%0.140962%0.1%3610.746%10.7%-0.525373%-0.650209%-0.003397%-0.525373%0.5%0.525373%0.262687%0.650209%0.788060%0.8%11032.836%32.8%-0.514096%-0.499188%-0.514096%0.5%0.514096%0.762852%0.499188%0.417406%1.276949%1.3%10832.239%32.2%-0.000000%-0.516646%-0.043880%0.000000%0.0%0.000000%0.970149%0.516646%0.970149%1.0%133.881%3.88%-0.182421%-0.519320%-0.182421%0.2%0.182421%0.762852%0.519320%0.045610%0.945274%0.9%6820.299%20.3%

Detailed Age and Sex#3

Percentage in each age cohort per year of age.1
Scope: population of Jefferson County and the Round Prairie Township
Female Male
Jefferson County
Round Prairie Township
Shaded bar tips show excess over facing bar.
3%2%1%0%1%2%3%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%-0.030433%-0.079266%0.000000%0.0%0.000000%0.000000%0.030433%0.000000%0.0%00.000%0%-0.000000%-0.100781%-0.141547%0.000000%0.0%0.000000%0.477612%0.100781%0.477612%0.5%82.388%2.39%-0.537313%-0.255917%-0.537313%0.5%0.537313%0.000000%0.255917%0.095119%0.537313%0.5%185.373%5.37%-0.000000%-0.379345%-0.041898%0.000000%0.0%0.000000%0.000000%0.379345%0.000000%0.0%00.000%0%-0.000000%-0.995025%-0.490696%-0.264221%-0.995025%1.0%0.000000%0.490696%0.000000%0.0%102.985%2.99%-0.000000%-0.636961%0.000000%0.0%0.000000%0.000000%0.636961%0.407655%0.000000%0.0%00.000%0%-0.000000%-1.022912%-0.284981%0.000000%0.0%0.000000%1.293532%1.022912%1.293532%1.3%133.881%3.88%-0.000000%-1.492537%-0.900238%-0.014155%-1.492537%1.5%0.000000%0.900238%0.000000%0.0%102.985%2.99%-0.716418%-0.551466%-0.716418%0.7%0.716418%2.029851%0.551466%0.279697%2.746269%2.7%5817.313%17.3%-0.417910%-0.358209%-0.595629%-0.031706%-0.776119%0.8%0.417910%0.595629%0.417910%0.4%205.970%5.97%-0.000000%-0.537313%-0.428038%-0.023780%-0.537313%0.5%0.000000%0.428038%0.000000%0.0%92.687%2.69%-0.000000%-0.422376%-0.064545%0.000000%0.0%0.000000%0.000000%0.422376%0.000000%0.0%00.000%0%-0.000000%-0.587702%0.000000%0.0%0.000000%1.134328%0.587702%0.249122%1.134328%1.1%195.672%5.67%-1.671642%-0.460876%-1.671642%1.7%1.671642%0.119403%0.460876%0.082663%1.791045%1.8%5817.313%17.3%-0.000000%-0.506171%0.000000%0.0%0.000000%1.253731%0.506171%0.499377%1.253731%1.3%216.269%6.27%-0.298507%-0.403880%-0.298507%0.3%0.298507%0.398010%0.403880%1.119164%0.696517%0.7%102.985%2.99%-0.000000%-0.317065%0.000000%0.0%0.000000%3.880597%0.317065%0.486921%3.880597%3.9%133.881%3.88%-0.000000%-0.407655%-0.787000%0.000000%0.0%0.000000%0.000000%0.407655%0.000000%0.0%00.000%0%-0.000000%-0.365191%0.000000%0.0%0.000000%0.000000%0.365191%0.062281%0.000000%0.0%00.000%0%-0.000000%-1.094527%-0.622806%-1.094527%1.1%0.000000%0.622806%0.158532%0.000000%0.0%113.284%3.28%-0.000000%-0.577511%-0.203827%0.000000%0.0%0.000000%0.000000%0.577511%0.000000%0.0%00.000%0%-0.000000%-0.331786%0.000000%0.0%0.000000%1.373134%0.331786%0.081531%1.373134%1.4%236.866%6.87%-0.000000%-0.382743%0.000000%0.0%0.000000%2.029851%0.382743%0.191371%2.029851%2.0%3410.149%10.1%

Detailed Sex Ratio#4

Percentage more males or females in selected age cohorts.
Scope: population of Jefferson County and the Round Prairie Township
More Females More Males
Jefferson County
Round Prairie Township
1,000%500%0%M:FFM75-7967-6960-6155-5950-5445-4930-3422-2415-170.000000%0.000000%0.0%37.168142%1.0001.0050.000%50.0%50.000%50.0%-1,000.000000%-53.846154%-1,000.000000%> 1000%0.0000100.000%100%0.000%0%-1,000.000000%-1.572327%-1,000.000000%> 1000%0.0000100.000%100%0.000%0%283.333333%50.718686%283.333333%283.3%3.8333.8320.690%20.7%79.310%79.3%-85.714286%-5.323194%-85.714286%85.7%0.5380.5465.000%65.0%35.000%35.0%-1,000.000000%-5.555556%-1,000.000000%> 1000%0.0000100.000%100%0.000%0%7.142857%17.936118%7.142857%7.1%1.0711.0748.276%48.3%51.724%51.7%133.333333%277.102804%133.333333%133.3%2.3332.3330.000%30.0%70.000%70.0%-1,000.000000%-1,000.000000%> 1000%25.454545%0.0000100.000%100%0.000%0%

Map of Age Cohorts by Block in the Round Prairie Township

Children Age Cohorts by Block#5

Percentage of population aged 0 to 17 (%):
0%13%27%40%53%67%

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%5%10%15%20%25%

30s Age Cohorts by Block#8

Percentage of population aged 30 to 39 (%):
0%10%20%30%40%50%

40s Age Cohorts by Block#9

Percentage of population aged 40 to 49 (%):
0%10%20%30%40%50%

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%20%40%60%80%100%

70s Age Cohorts by Block#12

Percentage of population aged 70 to 79 (%):
0%20%40%60%80%100%

80+ Age Cohorts by Block#13

Percentage of population aged 80 and older (%):
0%20%40%60%80%100%
Road Data ©OpenStreetMap

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Age Cohorts by County Subdivision in the Fairfield Area

There are 13 county subdivisions in the Fairfield Area. This section compares the Round Prairie Township to all of the county subdivisions in the Fairfield Area and to those entities that contain or substantially overlap with the Round Prairie Township.

Children by County Subdivision#14

Percentage of population aged 0 to 17 (%):
Scope: population of the Round Prairie Township, selected other county subdivisions in the Fairfield Area, and entities that contain the Round Prairie Township
0%5%10%15%20%25%Count#Polk TownshipLocust Grove TownshipLocust GrvWest North CentralIowaMidwestBlack Hawk TownshipBlack HawkUnited States of AmericaUnited StatesCedar TownshipCedar090100-2B.G. 090100-2090100Tract 090100Des Moines TownshipDes MoinesLockridge TownshipLockridgeWalnut TownshipWalnutRound Prairie TownshipRound PrairieFairfield Metro AreaFairfieldJefferson CountyJeffersonPenn TownshipFairfieldCenter TownshipCtrBuchanan TownshipBuchananLiberty TownshipLiberty25.819672%25.819672%25.8%126124.038462%24.038462%24.0%275223.689691%23.689691%23.7%4,971,0164.97M23.418418%23.418418%23.4%727,514728k23.217458%23.217458%23.2%15,712,75815.7M23.160763%23.160763%23.2%85323.108006%23.108006%23.1%73,612,43873.6M23.088235%23.088235%23.1%157423.047977%23.047977%23.0%24523.008000%23.008000%23.0%71922.696246%22.696246%22.7%133522.416303%22.416303%22.4%154621.543408%21.543408%21.5%67720.298507%20.298507%20.3%68819.516476%19.516476%19.5%3,44719.516476%19.516476%19.5%3,44719.270833%19.270833%19.3%74919.201368%19.201368%19.2%1,9091014.629630%14.629630%14.6%2371114.629630%14.629630%14.6%791214.359862%14.359862%14.4%8313

Age Cohorts by County Subdivision in Iowa

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

Children by County Subdivision#23

Percentage of population aged 0 to 17 (%):
Scope: population of the Round Prairie Township, selected other county subdivisions in Iowa, and entities that contain the Round Prairie Township
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 States090100-2B.G. 090100-2090100Tract 090100Cedar RapidsFranklin TownshipFranklinDes Moines TownshipDes MoinesFour Mile TownshipFour MileCenter TownshipCtrNewton TownshipNewtonOskaloosaWalnut TownshipWalnutTimber Creek TownshipTimber CrkMonroe TownshipMonroeClintonDes Moines TownshipDes MoinesMason CityFort DodgeMadison TownshipMadisonDubuqueWaverlyRound Prairie TownshipRound PrairieFairfield Metro AreaFairfieldJefferson CountyJeffersonGrinnellFairfieldCedar 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%73,612,43873.6M23.047977%23.047977%23.0%24523.008000%23.008000%23.0%71922.994202%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%2,0654420.298507%20.298507%20.3%6819.516476%19.516476%19.5%3,44719.516476%19.516476%19.5%3,44719.304214%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

Age Cohorts by County Subdivision in the Midwest

There are 19,478 county subdivisions in the Midwest. This section compares the Round Prairie Township to the 50 most populous county subdivisions in the Midwest and to those entities that contain or substantially overlap with the Round Prairie Township. The least populous of the compared county subdivisions has a population of 112,821.

Children by County Subdivision#32

Percentage of population aged 0 to 17 (%):
Scope: population of the Round Prairie Township, selected other county subdivisions in the Midwest, and entities that contain the Round Prairie Township
0%10%20%Count#OlatheAurora TownshipAuroraKansas CityWayne TownshipWayneMilwaukeeWichitaLawrence TownshipLawrenceNorth TownshipNSt. PaulDetroitOmahaThornton TownshipThorntonSioux FallsRockford TownshipRockfordMilton TownshipMiltonBlue TownshipGrand RapidsTopekaWest North CentralPalatine TownshipPalatineProviso TownshipProvisoIowaDowners Grove TownshipDowners GrvToledoOverland ParkMidwestUnited States of AmericaUnited States090100-2B.G. 090100-2Worth TownshipWorth090100Tract 090100ClevelandCedar RapidsWarrenLincolnColumbusBloomingdale TownshipBloomingdaleCapital TownshipCapitalLisle TownshipLisleWheeling TownshipWheelingYork TownshipSchaumburg TownshipSchaumburgDaytonCincinnatiChicagoAkronCenter TownshipCtrMaine TownshipMaineWashington TownshipWashingtonRound Prairie TownshipRound PrairieSt. LouisSterling HeightsSterling HtsMinneapolisFargoFairfield Metro AreaFairfieldJefferson CountyJeffersonKaw TownshipSpringfield TownshipSpringfieldMadisonAnn Arbor29.310098%29.310098%29.3%38,92038.9k128.976809%28.976809%29.0%42,91942.9k228.278188%28.278188%28.3%42,34842.3k327.826444%27.826444%27.8%39,26239.3k426.475933%26.475933%26.5%158,504159k525.967894%25.967894%26.0%100,764101k625.854317%25.854317%25.9%31,62531.6k725.508555%25.508555%25.5%40,40340.4k825.318684%25.318684%25.3%75,23775.2k925.218343%25.218343%25.2%172,353172k1025.047396%25.047396%25.0%110,978111k1124.478487%24.478487%24.5%41,48141.5k1224.232733%24.232733%24.2%34,78134.8k1324.130412%24.130412%24.1%42,05442.1k1424.117607%24.117607%24.1%28,56228.6k1524.112045%24.112045%24.1%38,03038.0k1623.914961%23.914961%23.9%46,36846.4k1723.720503%23.720503%23.7%30,23730.2k1823.689691%23.689691%23.7%4,971,0164.97M23.596819%23.596819%23.6%26,85226.9k1923.475670%23.475670%23.5%35,61435.6k2023.418418%23.418418%23.4%727,514728k23.327643%23.327643%23.3%34,71234.7k2123.297870%23.297870%23.3%65,43365.4k2223.297511%23.297511%23.3%42,81542.8k2323.217458%23.217458%23.2%15,712,75815.7M23.108006%23.108006%23.1%73,612,43873.6M23.047977%23.047977%23.0%24523.039530%23.039530%23.0%35,21535.2k2423.008000%23.008000%23.0%71922.998471%22.998471%23.0%89,50289.5k2522.994202%22.994202%23.0%29,78629.8k2622.854245%22.854245%22.9%30,86930.9k2722.619388%22.619388%22.6%61,75561.8k2822.597144%22.597144%22.6%185,081185k2922.578243%22.578243%22.6%25,47325.5k3022.459425%22.459425%22.5%26,15426.2k3122.348361%22.348361%22.3%26,63526.6k3222.283587%22.283587%22.3%34,53834.5k3322.227271%22.227271%22.2%27,88327.9k3422.157443%22.157443%22.2%29,26429.3k3522.121536%22.121536%22.1%31,22331.2k3622.113949%22.113949%22.1%65,90265.9k3721.913385%21.913385%21.9%594,733595k3821.641949%21.641949%21.6%42,96143.0k3921.428183%21.428183%21.4%31,52331.5k4020.781276%20.781276%20.8%28,36028.4k4120.516567%20.516567%20.5%27,94527.9k4220.298507%20.298507%20.3%6820.242382%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%23,09423.1k4619.516476%19.516476%19.5%3,44719.516476%19.516476%19.5%3,44718.240862%18.240862%18.2%31,31531.3k4718.124235%18.124235%18.1%29,93029.9k4817.137062%17.137062%17.1%42,16342.2k4913.862661%13.862661%13.9%16,37016.4k50

Age Cohorts by County Subdivision in the United States

There are 35,600 county subdivisions in the United States. This section compares the Round Prairie Township to the 50 most populous county subdivisions in the United States and to those entities that contain or substantially overlap with the Round Prairie Township. The least populous of the compared county subdivisions has a population of 547,300.

Children by County Subdivision#41

Percentage of population aged 0 to 17 (%):
Scope: population of the Round Prairie Township, selected other county subdivisions in the United States, and entities that contain the Round Prairie Township
0%10%20%Count#San BernardinoSouthwest DallasSW DallasNorthwest HarrisNW HarrisFresnoFort WorthSalt Lake CitySalt Lk CityNortheast TarrantNE TarrantHoustonMilwaukeeSan Antonio CentralSan Antonio CntrlEl PasoNortheast DallasNE DallasBronxPlanoTulsaDetroitPhoenixOntarioTownship 1:Charlotte1, CharlotteAnaheim-Santa Ana-Garden GroveAnaheim-Santa An…SacramentoLong Beach-LakewoodLong Bch-LakewoodLas VegasWest North CentralOceanside-EscondidoOceanside-Escond…IowaBrooklynMidwestUnited States of AmericaUnited States090100-2B.G. 090100-2Albuquerque090100Tract 090100San JoseEast San Gabriel ValleyE San Gabriel VlySeattle EastColumbusTown of HempsteadHempsteadOrlandoPhiladelphiaSan DiegoChicagoTampaAustinSan Fernando ValleySan Fernando VlyTucsonBaltimoreLos AngelesDenverQueensRound Prairie TownshipRound PrairieAtlantaMiamiFairfield Metro AreaFairfieldJefferson CountyJeffersonSeattleWashingtonBostonManhattanSan Francisco28.994345%28.994345%29.0%243,195243k128.849273%28.849273%28.8%278,686279k228.832103%28.832103%28.8%215,729216k328.397448%28.397448%28.4%196,566197k427.641788%27.641788%27.6%235,492235k527.496527%27.496527%27.5%270,755271k626.987978%26.987978%27.0%154,609155k726.725236%26.725236%26.7%882,854883k826.475933%26.475933%26.5%158,504159k926.202297%26.202297%26.2%183,823184k1026.125729%26.125729%26.1%143,291143k1125.730246%25.730246%25.7%398,059398k1225.573137%25.573137%25.6%367,431367k1325.541202%25.541202%25.5%139,787140k1425.334430%25.334430%25.3%150,050150k1525.218343%25.218343%25.2%172,353172k1624.820142%24.820142%24.8%790,766791k1724.651051%24.651051%24.7%158,701159k1824.540635%24.540635%24.5%198,493198k1924.485581%24.485581%24.5%415,583416k2024.105398%24.105398%24.1%270,060270k2124.003737%24.003737%24.0%138,756139k2223.974603%23.974603%24.0%448,315448k2323.689691%23.689691%23.7%4,971,0164.97M23.555887%23.555887%23.6%155,230155k2423.418418%23.418418%23.4%727,514728k23.337305%23.337305%23.3%608,369608k2523.217458%23.217458%23.2%15,712,75815.7M23.108006%23.108006%23.1%73,612,43873.6M23.047977%23.047977%23.0%24523.033158%23.033158%23.0%147,927148k2623.008000%23.008000%23.0%71922.866327%22.866327%22.9%401,701402k2722.814001%22.814001%22.8%218,249218k2822.721955%22.721955%22.7%133,247133k2922.597144%22.597144%22.6%185,081185k3022.467309%22.467309%22.5%172,708173k3122.237882%22.237882%22.2%129,541130k3222.168125%22.168125%22.2%345,809346k3321.982996%21.982996%22.0%523,203523k3421.913385%21.913385%21.9%594,733595k3521.700117%21.700117%21.7%144,592145k3621.692326%21.692326%21.7%186,313186k3721.633042%21.633042%21.6%398,263398k3821.517750%21.517750%21.5%188,032188k3921.123671%21.123671%21.1%131,178131k4020.884750%20.884750%20.9%537,723538k4120.705017%20.705017%20.7%137,337137k4220.470812%20.470812%20.5%472,878473k4320.298507%20.298507%20.3%6819.876571%19.876571%19.9%115,302115k4419.544858%19.544858%19.5%188,182188k4519.516476%19.516476%19.5%3,44719.516476%19.516476%19.5%3,44717.999155%17.999155%18.0%187,875188k4617.402645%17.402645%17.4%114,685115k4716.549062%16.549062%16.5%108,939109k4814.639548%14.639548%14.6%239,355239k4913.481174%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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