Age and Sex in Polk County, Nebraska (County)

Age Structure#1

Percentage in each age cohort per year of age.1 Gray areas represent percentile bands from the counties in Nebraska.
Scope: population of Nebraska, Polk County, and other counties in Nebraska
Polk County
Nebraska
Percentile:
0th - 100th
10th - 90th
20th - 80th
30th - 70th
40th - 60th
0.0%0.5%1.0%1.5%Count%85+80-8475-7970-7467-6965-6662-6460-6155-5950-5445-4940-4435-3930-3425-2922-24212018-1915-1710-145-90-41953.720%3.72%1322.518%2.52%2043.892%3.89%2324.426%4.43%1512.881%2.88%1542.938%2.94%2825.380%5.38%1973.758%3.76%3947.516%7.52%3787.211%7.21%3346.372%6.37%2604.960%4.96%2885.494%5.49%2624.998%5.00%1923.663%3.66%1152.194%2.19%931.774%1.77%581.106%1.11%1052.003%2.00%2374.521%4.52%3697.039%7.04%3677.001%7.00%2434.636%4.64%

Age and Sex#2

Percentage in each age cohort per year of age.1
Scope: population of Nebraska and Polk County
Female Male
Nebraska
Polk County
Shaded bar tips show excess over facing bar.
0.5%0.0%0.5%Count%Senior2Older Adult3Younger Adult4College5Children6-0.259125%-0.047692%-0.177076%-0.046730%-0.306817%0.31%0.259125%0.177076%0.259125%0.26%1,06820.374%20.4%-0.701259%-0.619026%-0.003140%-0.701259%0.70%0.701259%0.005341%0.619026%0.706601%0.71%1,84535.196%35.2%-0.444063%-0.646482%-0.444063%0.44%0.444063%0.020137%0.646482%0.029569%0.464199%0.46%85716.349%16.3%-0.591377%-0.723133%-0.591377%0.59%0.591377%0.038153%0.723133%0.023017%0.629531%0.63%2564.884%4.88%-0.634830%-0.019077%-0.672732%-0.653906%0.65%0.634830%0.672732%0.035411%0.634830%0.63%1,21623.197%23.2%

Detailed Age and Sex#3

Percentage in each age cohort per year of age.1
Scope: population of Nebraska and Polk County
Female Male
Nebraska
Polk County
Shaded bar tips show excess over facing bar.
1.0%0.5%0.0%0.5%1.0%Count%85+80-8475-7970-7467-6965-6662-6460-6155-5950-5445-4940-4435-3930-3425-2922-24212018-1915-1710-145-90-4-0.076307%-0.079884%-0.046033%-0.043794%-0.156190%0.16%0.076307%0.046033%0.076307%0.08%1953.720%3.72%-0.206028%-0.091568%-0.166686%-0.066466%-0.297596%0.30%0.206028%0.166686%0.206028%0.21%1322.518%2.52%-0.373903%-0.030523%-0.219300%-0.059609%-0.404426%0.40%0.373903%0.219300%0.373903%0.37%2043.892%3.89%-0.427318%-0.297163%-0.051912%-0.427318%0.43%0.427318%0.030523%0.297163%0.457841%0.46%2324.426%4.43%-0.470558%-0.019077%-0.409495%-0.025887%-0.489635%0.49%0.470558%0.409495%0.470558%0.47%1512.881%2.88%-0.715376%-0.496981%-0.006990%-0.715376%0.72%0.715376%0.038153%0.496981%0.753529%0.75%1542.938%2.94%-0.686761%-0.527980%-0.049400%-0.686761%0.69%0.686761%0.419687%0.527980%1.106448%1.11%2825.380%5.38%-0.639069%-0.600916%-0.636781%-0.001568%-1.239985%1.24%0.639069%0.636781%0.639069%0.64%1973.758%3.76%-0.736360%-0.656922%-0.004104%-0.736360%0.74%0.736360%0.030523%0.656922%0.766883%0.77%3947.516%7.52%-0.713468%-0.672039%-0.005454%-0.713468%0.71%0.713468%0.015261%0.672039%0.728729%0.73%3787.211%7.21%-0.587562%-0.591540%-0.587562%0.59%0.587562%0.099199%0.591540%0.008282%0.686761%0.69%3346.372%6.37%-0.431133%-0.129721%-0.579006%-0.560855%0.56%0.431133%0.579006%0.015840%0.431133%0.43%2604.960%4.96%-0.526517%-0.604872%-0.526517%0.53%0.526517%0.045784%0.604872%0.018849%0.572301%0.57%2885.494%5.49%-0.461656%-0.670934%-0.461656%0.46%0.461656%0.076307%0.670934%0.026057%0.537963%0.54%2624.998%5.00%-0.358642%-0.639093%-0.358642%0.36%0.358642%0.015261%0.639093%0.037347%0.373903%0.37%1923.663%3.66%-0.311586%-0.108101%-0.687394%-0.419687%0.42%0.311586%0.687394%0.040328%0.311586%0.31%1152.194%2.19%-0.572301%-0.697777%-0.572301%0.57%0.572301%0.629531%0.697777%0.084996%1.201831%1.20%931.774%1.77%-0.267074%-0.572301%-0.763744%-0.023814%-0.839374%0.84%0.267074%0.763744%0.267074%0.27%581.106%1.11%-0.476917%-0.703598%-0.476917%0.48%0.476917%0.047692%0.703598%0.015442%0.524609%0.52%1052.003%2.00%-0.693120%-0.643009%-0.693120%0.69%0.693120%0.120819%0.643009%0.045608%0.813939%0.81%2374.521%4.52%-0.671499%-0.064861%-0.667712%-0.736360%0.74%0.671499%0.667712%0.035242%0.671499%0.67%3697.039%7.04%-0.675315%-0.049599%-0.693195%-0.724914%0.72%0.675315%0.693195%0.026897%0.675315%0.68%3677.001%7.00%-0.450210%-0.026707%-0.675122%-0.476917%0.48%0.450210%0.675122%0.037975%0.450210%0.45%2434.636%4.64%

Detailed Sex Ratio#4

Percentage more males or females in selected age cohorts.
Scope: population of Nebraska and Polk County
More Females More Males
Nebraska
Polk County
200%100%0%100%M:FFM85+80-8475-7970-7467-6965-6662-6460-6155-5950-5445-4940-4435-3930-3425-2922-24212018-1915-1710-145-90-4-104.687500%-95.135681%-104.687500%104.7%0.4890.4967.179%67.2%32.821%32.8%-44.444444%-39.874992%-44.444444%44.4%0.6920.6959.091%59.1%40.909%40.9%-8.163265%-27.181501%-8.163265%8.2%0.9250.9251.961%52.0%48.039%48.0%-17.469233%7.142857%7.142857%7.1%1.0711.0748.276%48.3%51.724%51.7%-4.054054%-6.321665%-4.054054%4.1%0.9610.9650.993%51.0%49.007%49.0%-1.406492%5.333333%5.333333%5.3%1.0531.0548.701%48.7%51.299%51.3%-9.356333%61.111111%61.111111%61.1%1.6111.6138.298%38.3%61.702%61.7%-94.029851%-0.246254%-94.029851%94.0%0.5150.5265.990%66.0%34.010%34.0%-0.624676%4.145078%4.145078%4.1%1.0411.0448.985%49.0%51.015%51.0%-0.811529%2.139037%2.139037%2.1%1.0211.0249.471%49.5%50.529%50.5%16.883117%1.400022%16.883117%16.9%1.1691.1746.108%46.1%53.892%53.9%-30.088496%-30.088496%30.1%2.735802%0.7690.7756.538%56.5%43.462%43.5%8.695652%3.116212%8.695652%8.7%1.0871.0947.917%47.9%52.083%52.1%16.528926%3.883695%16.528926%16.5%1.1651.1746.183%46.2%53.817%53.8%4.255319%5.843799%4.255319%4.3%1.0431.0448.958%49.0%51.042%51.0%-34.693878%-34.693878%34.7%5.866735%0.7420.7457.391%57.4%42.609%42.6%110.000000%12.181001%110.000000%110.0%2.1002.1032.258%32.3%67.742%67.7%-214.285714%-3.118040%-214.285714%214.3%0.3180.3275.862%75.9%24.138%24.1%10.000000%2.194689%10.000000%10.0%1.1001.1047.619%47.6%52.381%52.4%17.431193%7.092863%17.431193%17.4%1.1741.1745.992%46.0%54.008%54.0%-9.659091%-9.659091%9.7%5.278074%0.9120.9152.304%52.3%47.696%47.7%-7.344633%-7.344633%7.3%3.880130%0.9320.9351.771%51.8%48.229%48.2%-5.932203%-5.932203%5.9%5.624843%0.9440.9451.440%51.4%48.560%48.6%

Map of Age Cohorts by County Subdivision in Polk County

Children Age Cohorts by County Subdivision#5

Percentage of population aged 0 to 17 (%):
19.0%20.8%22.6%24.4%26.2%28.1%

College Age Cohorts by County Subdivision#6

Percentage of population aged 18 to 21 (%):
1.5%3.5%5.5%7.4%9.4%11.4%

20s Age Cohorts by County Subdivision#7

Percentage of population aged 22 to 29 (%):
0.9%2.8%4.6%6.5%8.4%10.3%

30s Age Cohorts by County Subdivision#8

Percentage of population aged 30 to 39 (%):
7.1%8.3%9.3%10.4%11.4%12.5%

40s Age Cohorts by County Subdivision#9

Percentage of population aged 40 to 49 (%):
7.1%8.7%10.3%11.9%13.5%15.1%

50s Age Cohorts by County Subdivision#10

Percentage of population aged 50 to 59 (%):
10.4%12.5%14.6%16.7%18.8%21.0%

60s Age Cohorts by County Subdivision#11

Percentage of population aged 60 to 69 (%):
6.3%8.9%11.4%14.0%16.5%19.1%

70s Age Cohorts by County Subdivision#12

Percentage of population aged 70 to 79 (%):
4.9%7.0%9.0%11.1%13.1%15.2%

80+ Age Cohorts by County Subdivision#13

Percentage of population aged 80 and older (%):
3.2%5.3%7.3%9.3%11.3%13.4%
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 (%):
22.70%22.86%23.03%23.19%23.36%23.53%

College Age Cohorts by Tract#15

Percentage of population aged 18 to 21 (%):
2.7%3.4%4.1%4.9%5.6%6.3%

20s Age Cohorts by Tract#16

Percentage of population aged 22 to 29 (%):
5.16%5.52%5.87%6.22%6.57%6.93%

30s Age Cohorts by Tract#17

Percentage of population aged 30 to 39 (%):
9.54%10.02%10.51%10.99%11.47%11.96%

40s Age Cohorts by Tract#18

Percentage of population aged 40 to 49 (%):
10.35%10.68%11.00%11.32%11.64%11.97%

50s Age Cohorts by Tract#19

Percentage of population aged 50 to 59 (%):
13.69%14.04%14.38%14.72%15.06%15.40%

60s Age Cohorts by Tract#20

Percentage of population aged 60 to 69 (%):
13.9%14.5%15.0%15.5%16.0%16.6%

70s Age Cohorts by Tract#21

Percentage of population aged 70 to 79 (%):
7.52%7.93%8.33%8.73%9.13%9.54%

80+ Age Cohorts by Tract#22

Percentage of population aged 80 and older (%):
5.61%5.82%6.03%6.23%6.44%6.65%
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 (%):
22.46%22.93%23.40%23.87%24.33%24.80%

College Age Cohorts by Block Group#24

Percentage of population aged 18 to 21 (%):
1.4%3.3%5.1%6.9%8.7%10.5%

20s Age Cohorts by Block Group#25

Percentage of population aged 22 to 29 (%):
4.3%5.4%6.4%7.4%8.4%9.5%

30s Age Cohorts by Block Group#26

Percentage of population aged 30 to 39 (%):
7.7%8.7%9.7%10.7%11.7%12.7%

40s Age Cohorts by Block Group#27

Percentage of population aged 40 to 49 (%):
8.1%9.5%10.9%12.3%13.7%15.1%

50s Age Cohorts by Block Group#28

Percentage of population aged 50 to 59 (%):
11.7%13.3%14.9%16.5%18.0%19.7%

60s Age Cohorts by Block Group#29

Percentage of population aged 60 to 69 (%):
10.7%12.0%13.3%14.6%15.9%17.3%

70s Age Cohorts by Block Group#30

Percentage of population aged 70 to 79 (%):
3.0%4.8%6.7%8.5%10.3%12.2%

80+ Age Cohorts by Block Group#31

Percentage of population aged 80 and older (%):
3.6%4.7%5.8%6.9%8.0%9.1%
Road Data ©OpenStreetMap

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Age Cohorts by Place in Polk County

There are 4 places in Polk County. This section compares all 4 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%5%10%15%20%25%Count#ShelbyStromsburgNebraskaWest North CentralMidwestOsceolaPolk CountyPolkUnited States of AmericaUnited StatesPolk26.977401%26.977401%27.0%191125.387263%25.387263%25.4%295224.855748%24.855748%24.9%467,601468k23.689691%23.689691%23.7%4,971,0164.97M23.217458%23.217458%23.2%15,712,75815.7M23.209877%23.209877%23.2%188323.197253%23.197253%23.2%1,21623.108006%23.108006%23.1%73,612,43873.6M21.130952%21.130952%21.1%714

Age Cohorts by County Subdivision in Polk County

There are 6 county subdivisions in Polk County. This section compares all 6 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%Count#West Stromsburg PrecinctW StromsburgNebraskaSouth Osceola PrecinctS OsceolaNorth Osceola PrecinctN OsceolaWest North CentralMidwestPolk CountyPolkUnited States of AmericaUnited StatesSouth Canada PrecinctS CanadaEast Stromsburg PrecinctE StromsburgWest Pleasant Home PrecinctW Pleasant Home28.023952%28.023952%28.0%234124.855748%24.855748%24.9%467,601468k24.148297%24.148297%24.1%241223.968566%23.968566%24.0%244323.689691%23.689691%23.7%4,971,0164.97M23.217458%23.217458%23.2%15,712,75815.7M23.197253%23.197253%23.2%1,21623.108006%23.108006%23.1%73,612,43873.6M21.765210%21.765210%21.8%254420.574887%20.574887%20.6%136519.005329%19.005329%19.0%1076

Age Cohorts by County in Nebraska

There are 93 counties in Nebraska. This section compares Polk County to the 50 most populous counties in Nebraska and to those entities that contain or substantially overlap with Polk County. The least populous of the compared counties has a population of 5,781.

Children by County#50

Percentage of population aged 0 to 17 (%):
Scope: population of Polk County, selected other counties in Nebraska, and entities that contain Polk County
0%10%20%30%Count#Thurston CountyThurstonColfax CountyColfaxDakota CountyDakotaSarpy CountySarpyDawson CountyDawsonHall CountyHallPlatte CountyPlatteStanton CountyStantonDouglas CountyDouglasBox Butte CountyBox ButteDixon CountyDixonSaunders CountySaundersMadison CountyMadisonNebraskaScotts Bluff CountyScotts BluffCedar CountyCedarPierce CountyPiercePhelps CountyPhelpsCuming CountyCumingCass CountyCassKnox CountyKnoxHamilton CountyHamiltonLincoln CountyLincolnKearney CountyKearneyClay CountyClayWashington CountyWashingtonSaline CountySalineHolt CountyHoltCheyenne CountyCheyenneOtoe CountyOtoeButler CountyButlerAdams CountyAdamsWest North CentralHoward CountyHowardSeward CountySewardDodge CountyDodgeCuster CountyCusterBuffalo CountyBuffaloRed Willow CountyRed WillowMidwestPolk CountyPolkAntelope CountyAntelopeUnited States of AmericaUnited StatesLancaster CountyLancasterYork CountyYorkMerrick CountyMerrickGage CountyGageBurt CountyBurtJefferson CountyJeffersonRichardson CountyRichardsonCherry CountyCherryNemaha CountyNemahaKeith CountyKeithWayne CountyWayneDawes CountyDawes35.641723%35.641723%35.6%2,491129.888561%29.888561%29.9%3,138229.124994%29.124994%29.1%6,028328.136959%28.136959%28.1%48,52548.5k427.746196%27.746196%27.7%6,638527.118894%27.118894%27.1%16,57116.6k626.171911%26.171911%26.2%8,559726.120890%26.120890%26.1%1,573825.878918%25.878918%25.9%140,588141k925.427786%25.427786%25.4%2,8681025.150628%25.150628%25.2%1,4611125.136064%25.136064%25.1%5,2651225.067616%25.067616%25.1%8,8051324.855748%24.855748%24.9%467,601468k24.776633%24.776633%24.8%9,0681424.754534%24.754534%24.8%2,1431524.738822%24.738822%24.7%1,7761624.534430%24.534430%24.5%2,2661724.461623%24.461623%24.5%2,2151824.439383%24.439383%24.4%6,2231924.429891%24.429891%24.4%2,0892024.413249%24.413249%24.4%2,2262124.275372%24.275372%24.3%8,6852224.236408%24.236408%24.2%1,5872324.188183%24.188183%24.2%1,5272424.122333%24.122333%24.1%4,9062523.962106%23.962106%24.0%3,4402623.938224%23.938224%23.9%2,4802723.914767%23.914767%23.9%2,4132823.826306%23.826306%23.8%3,7862923.790372%23.790372%23.8%1,9523023.715753%23.715753%23.7%7,4793123.689691%23.689691%23.7%4,971,0164.97M23.660644%23.660644%23.7%1,5063223.461696%23.461696%23.5%4,0153323.397584%23.397584%23.4%8,5823423.377226%23.377226%23.4%2,5213523.344077%23.344077%23.3%11,29911.3k3623.235943%23.235943%23.2%2,5293723.217458%23.217458%23.2%15,712,75815.7M23.197253%23.197253%23.2%1,21623.127239%23.127239%23.1%1,4853823.108006%23.108006%23.1%73,612,43873.6M23.073379%23.073379%23.1%69,61469.6k3922.792949%22.792949%22.8%3,1554022.789683%22.789683%22.8%1,7764122.265589%22.265589%22.3%4,8494222.232332%22.232332%22.2%1,4664321.675279%21.675279%21.7%1,5944421.020984%21.020984%21.0%1,7134520.965231%20.965231%21.0%1,2124620.813970%20.813970%20.8%1,4784720.720721%20.720721%20.7%1,6794819.396643%19.396643%19.4%1,8264918.233869%18.233869%18.2%1,65650

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#59

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 CountyBexarBronx CountyBronxMaricopa CountyMaricopaWake CountyWakeNebraskaMecklenburg CountyMecklenburgMilwaukee CountyMilwaukeeSacramento CountySacramentoWayne CountyWayneFairfax CountyFairfaxClark CountyClarkWest North CentralFranklin CountyFranklinFairfield CountyFairfieldMontgomery CountyMontgomeryContra Costa CountyContra CostaKings CountyKingsMidwestPolk CountyPolkHillsborough 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%487,339487k825.573137%25.573137%25.6%367,431367k925.043628%25.043628%25.0%1,023,9211.02M1024.990987%24.990987%25.0%249,554250k1124.855748%24.855748%24.9%467,601468k24.574361%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%260,665261k2123.337305%23.337305%23.3%608,369608k2223.217458%23.217458%23.2%15,712,75815.7M23.197253%23.197253%23.2%1,21623.197227%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

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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