Age and Sex in Jefferson County, Montana (County)

Age Structure#1

Percentage in each age cohort per year of age.1 Gray areas represent percentile bands from the counties in Montana.
Scope: population of Montana, Jefferson County, and other counties in Montana
Jefferson County
Montana
Percentile:
0th - 100th
10th - 90th
20th - 80th
30th - 70th
40th - 60th
0.0%0.5%1.0%1.5%2.0%Count%85+80-8475-7970-7467-6965-6662-6460-6155-5950-5445-4940-4435-3930-3425-2922-24212018-1915-1710-145-90-41541.327%1.33%1921.655%1.66%3302.845%2.84%5724.931%4.93%5234.508%4.51%3803.276%3.28%7526.482%6.48%3643.138%3.14%1,1359.784%9.78%9598.267%8.27%8607.413%7.41%7156.163%6.16%5304.569%4.57%5164.448%4.45%4553.922%3.92%2812.422%2.42%570.491%0.49%1150.991%0.99%2712.336%2.34%5604.827%4.83%8167.034%7.03%5774.974%4.97%4874.198%4.20%
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 Montana and Jefferson County
Female Male
Montana
Jefferson County
Shaded bar tips show excess over facing bar.
0.5%0.0%0.5%Count%Senior2Older Adult3Younger Adult4College5Children6-0.243753%-0.219958%-0.023869%-0.243753%0.24%0.243753%0.027536%0.219958%0.271289%0.27%2,15118.542%18.5%-0.798897%-0.660256%-0.003944%-0.798897%0.80%0.798897%0.052064%0.660256%0.850961%0.85%4,78541.246%41.2%-0.424772%-0.609689%-0.424772%0.42%0.424772%0.003831%0.609689%0.029303%0.428603%0.43%1,78215.361%15.4%-0.474097%-0.006465%-0.676770%-0.480562%0.48%0.474097%0.676770%0.078562%0.474097%0.47%4433.819%3.82%-0.573705%-0.593995%-0.573705%0.57%0.573705%0.021071%0.593995%0.033549%0.594776%0.59%2,44021.033%21.0%
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 Montana and Jefferson County
Female Male
Montana
Jefferson County
Shaded bar tips show excess over facing bar.
1.0%0.5%0.0%0.5%1.0%Count%85+80-8475-7970-7467-6965-6662-6460-6155-5950-5445-4940-4435-3930-3425-2922-24212018-1915-1710-145-90-4-0.036635%-0.046866%-0.035531%-0.036635%0.04%0.036635%0.009697%0.046866%0.046332%0.05%1541.327%1.33%-0.146539%-0.037928%-0.186928%-0.031738%-0.184467%0.18%0.146539%0.186928%0.146539%0.15%1921.655%1.66%-0.275838%-0.017240%-0.267483%-0.036936%-0.293078%0.29%0.275838%0.267483%0.275838%0.28%3302.845%2.84%-0.460305%-0.400121%-0.460305%0.46%0.460305%0.065512%0.400121%0.006176%0.525817%0.53%5724.931%4.93%-0.649369%-0.526680%-0.649369%0.65%0.649369%0.204005%0.526680%0.001759%0.853375%0.85%5234.508%4.51%-0.775795%-0.631675%-0.775795%0.78%0.775795%0.086199%0.631675%0.008208%0.861995%0.86%3803.276%3.28%-0.948194%-0.676770%-0.948194%0.95%0.948194%0.264345%0.676770%0.015537%1.212539%1.21%7526.482%6.48%-0.706836%-0.724796%-0.041724%-0.706836%0.71%0.706836%0.155159%0.724796%0.861995%0.86%3643.138%3.14%-0.884407%-0.187915%-0.745522%-0.031132%-1.072321%1.07%0.884407%0.745522%0.884407%0.88%1,1359.784%9.78%-0.805103%-0.043100%-0.694163%-0.017022%-0.848203%0.85%0.805103%0.694163%0.805103%0.81%9598.267%8.27%-0.701664%-0.586130%-0.701664%0.70%0.701664%0.079304%0.586130%0.005277%0.780967%0.78%8607.413%7.41%-0.520645%-0.534361%-0.520645%0.52%0.520645%0.191363%0.534361%0.030526%0.712008%0.71%7156.163%6.16%-0.389622%-0.134471%-0.582143%-0.524093%0.52%0.389622%0.582143%0.011569%0.389622%0.39%5304.569%4.57%-0.422377%-0.616128%-0.422377%0.42%0.422377%0.044824%0.616128%0.034825%0.467201%0.47%5164.448%4.45%-0.384450%-0.603445%-0.384450%0.38%0.384450%0.015516%0.603445%0.038050%0.399966%0.40%4553.922%3.92%-0.330431%-0.655273%-0.330431%0.33%0.330431%0.146539%0.655273%0.035079%0.476970%0.48%2812.422%2.42%-0.215499%-0.724259%-0.215499%0.22%0.215499%0.060340%0.724259%0.045144%0.275838%0.28%570.491%0.49%-0.430997%-0.129299%-0.725529%-0.560297%0.56%0.430997%0.725529%0.116671%0.430997%0.43%1150.991%0.99%-0.573226%-0.628645%-0.573226%0.57%0.573226%0.021550%0.628645%0.076217%0.594776%0.59%2712.336%2.34%-0.804528%-0.578664%-0.804528%0.80%0.804528%0.000000%0.578664%0.055502%0.804528%0.80%5604.827%4.83%-0.675804%-0.592755%-0.675804%0.68%0.675804%0.055168%0.592755%0.021536%0.730971%0.73%8167.034%7.03%-0.465477%-0.618806%-0.465477%0.47%0.465477%0.063788%0.618806%0.033164%0.529265%0.53%5774.974%4.97%-0.398242%-0.043100%-0.579622%-0.441341%0.44%0.398242%0.579622%0.032773%0.398242%0.40%4874.198%4.20%
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 Montana and Jefferson County
More Females More Males
Montana
Jefferson County
50%0%M:FFM85+80-8475-7970-7467-6965-6662-6460-6155-5950-5445-4940-4435-3930-3425-2922-24212018-1915-1710-145-90-4-75.814438%26.470588%26.470588%26.5%1.2651.2644.156%44.2%55.844%55.8%-25.882353%-16.978568%-25.882353%25.9%0.7940.7955.729%55.7%44.271%44.3%-6.250000%-13.808724%-6.250000%6.3%0.9410.9451.515%51.5%48.485%48.5%14.232210%1.543421%14.232210%14.2%1.1421.1446.678%46.7%53.322%53.3%31.415929%0.333952%31.415929%31.4%1.3141.3143.212%43.2%56.788%56.8%11.111111%1.299404%11.111111%11.1%1.1111.1147.368%47.4%52.632%52.6%27.878788%2.295697%27.878788%27.9%1.2791.2843.883%43.9%56.117%56.1%-5.756657%21.951220%21.951220%22.0%1.2201.2245.055%45.1%54.945%54.9%-21.247563%-4.175841%-21.247563%21.2%0.8250.8254.802%54.8%45.198%45.2%-5.353319%-2.452140%-5.353319%5.4%0.9490.9551.303%51.3%48.697%48.7%11.302211%0.900240%11.302211%11.3%1.1131.1147.326%47.3%52.674%52.7%36.754967%5.712614%36.754967%36.8%1.3681.3742.238%42.2%57.762%57.8%-34.513274%-34.513274%34.5%1.987377%0.7430.7457.358%57.4%42.642%42.6%10.612245%5.652298%10.612245%10.6%1.1061.1147.481%47.5%52.519%52.5%4.035874%6.305460%4.035874%4.0%1.0401.0449.011%49.0%50.989%51.0%44.347826%5.353415%44.347826%44.3%1.4431.4440.925%40.9%59.075%59.1%28.000000%6.233135%28.000000%28.0%1.2801.2843.860%43.9%56.140%56.1%-30.000000%-30.000000%30.0%16.080808%0.7690.7756.522%56.5%43.478%43.5%3.759398%12.124038%3.759398%3.8%1.0381.0449.077%49.1%50.923%50.9%0.000000%0.000000%0.0%9.591354%1.0001.0050.000%50.0%50.000%50.0%8.163265%3.633247%8.163265%8.2%1.0821.0848.039%48.0%51.961%52.0%13.703704%5.359399%13.703704%13.7%1.1371.1446.794%46.8%53.206%53.2%-10.822511%-10.822511%10.8%5.654270%0.9020.9052.567%52.6%47.433%47.4%
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 Jefferson County

Children Age Cohorts by County Subdivision#5

Percentage of population aged 0 to 17 (%):
16.3%17.7%19.0%20.4%21.7%23.1%

College Age Cohorts by County Subdivision#6

Percentage of population aged 18 to 21 (%):
3.743%3.794%3.844%3.893%3.943%3.994%

20s Age Cohorts by County Subdivision#7

Percentage of population aged 22 to 29 (%):
5.71%6.13%6.55%6.97%7.39%7.82%

30s Age Cohorts by County Subdivision#8

Percentage of population aged 30 to 39 (%):
6.9%7.5%8.1%8.7%9.3%10.0%

40s Age Cohorts by County Subdivision#9

Percentage of population aged 40 to 49 (%):
13.559%13.571%13.582%13.594%13.605%13.617%

50s Age Cohorts by County Subdivision#10

Percentage of population aged 50 to 59 (%):
17.75%17.95%18.15%18.34%18.54%18.74%

60s Age Cohorts by County Subdivision#11

Percentage of population aged 60 to 69 (%):
16.6%17.1%17.7%18.2%18.7%19.3%

70s Age Cohorts by County Subdivision#12

Percentage of population aged 70 to 79 (%):
6.8%7.5%8.1%8.7%9.3%9.9%

80+ Age Cohorts by County Subdivision#13

Percentage of population aged 80 and older (%):
2.79%2.92%3.04%3.17%3.29%3.42%
Road Data ©OpenStreetMap

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Map of Age Cohorts by Tract in Jefferson County

Children Age Cohorts by Tract#14

Percentage of population aged 0 to 17 (%):
16.3%18.2%20.0%21.8%23.6%25.4%

College Age Cohorts by Tract#15

Percentage of population aged 18 to 21 (%):
2.95%3.26%3.57%3.87%4.17%4.48%

20s Age Cohorts by Tract#16

Percentage of population aged 22 to 29 (%):
4.4%5.1%5.8%6.5%7.1%7.9%

30s Age Cohorts by Tract#17

Percentage of population aged 30 to 39 (%):
6.9%7.7%8.5%9.2%10.0%10.8%

40s Age Cohorts by Tract#18

Percentage of population aged 40 to 49 (%):
11.5%12.4%13.2%14.0%14.9%15.8%

50s Age Cohorts by Tract#19

Percentage of population aged 50 to 59 (%):
16.80%17.20%17.60%17.99%18.38%18.78%

60s Age Cohorts by Tract#20

Percentage of population aged 60 to 69 (%):
16.1%16.8%17.4%18.0%18.6%19.3%

70s Age Cohorts by Tract#21

Percentage of population aged 70 to 79 (%):
5.3%6.3%7.2%8.1%9.0%9.9%

80+ Age Cohorts by Tract#22

Percentage of population aged 80 and older (%):
2.19%2.44%2.68%2.93%3.17%3.42%
Road Data ©OpenStreetMap

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Map of Age Cohorts by Block Group in Jefferson County

Children Age Cohorts by Block Group#23

Percentage of population aged 0 to 17 (%):
14.4%17.1%19.8%22.4%25.1%27.8%

College Age Cohorts by Block Group#24

Percentage of population aged 18 to 21 (%):
1.6%2.7%3.7%4.8%5.8%6.9%

20s Age Cohorts by Block Group#25

Percentage of population aged 22 to 29 (%):
2.5%6.0%9.4%12.8%16.2%19.6%

30s Age Cohorts by Block Group#26

Percentage of population aged 30 to 39 (%):
3.9%5.8%7.6%9.4%11.2%13.0%

40s Age Cohorts by Block Group#27

Percentage of population aged 40 to 49 (%):
6.3%9.4%12.4%15.5%18.5%21.6%

50s Age Cohorts by Block Group#28

Percentage of population aged 50 to 59 (%):
13.0%15.6%18.2%20.8%23.4%26.1%

60s Age Cohorts by Block Group#29

Percentage of population aged 60 to 69 (%):
11.8%14.1%16.4%18.7%21.1%23.4%

70s Age Cohorts by Block Group#30

Percentage of population aged 70 to 79 (%):
2.9%4.9%6.9%8.9%10.9%12.9%

80+ Age Cohorts by Block Group#31

Percentage of population aged 80 and older (%):
0.8%3.3%5.8%8.3%10.7%13.2%
Road Data ©OpenStreetMap

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Age Cohorts by Place in Jefferson County

There are 10 places in Jefferson County. This section compares all 10 of those to each other, Jefferson County, and other entities that contain or substantially overlap with Jefferson County.

Children by Place#32

Percentage of population aged 0 to 17 (%):
Scope: population of Jefferson County, selected places in Jefferson County, and entities that contain Jefferson County
0%10%20%30%Count#South HillsJefferson CityCardwellMontana CityMountainBasinWestUnited States of AmericaUnited StatesMontanaHelena Metro AreaHelena AreaJefferson CountyJeffersonWhitehallClancyBoulderRader CreekElkhorn39.697543%39.697543%39.7%210132.944606%32.944606%32.9%226228.571429%28.571429%28.6%22325.538568%25.538568%25.5%735424.709269%24.709269%24.7%5,732,5615.73M23.788546%23.788546%23.8%54523.760486%23.760486%23.8%17,834,66617.8M23.108006%23.108006%23.1%73,612,43873.6M21.987686%21.987686%22.0%225,020225k21.723160%21.723160%21.7%16,85516.9k21.032670%21.032670%21.0%2,44019.438445%19.438445%19.4%180618.486352%18.486352%18.5%298717.132867%17.132867%17.1%19684.700855%4.700855%4.7%1190.000000%0.000000%0.0%010
Count number of children
# rank of place out of 10 by %

Age Cohorts by County Subdivision in Jefferson County

There are 2 county subdivisions in Jefferson County. This section compares all 2 of those to each other, Jefferson County, and other entities that contain or substantially overlap with Jefferson County.

Children by County Subdivision#41

Percentage of population aged 0 to 17 (%):
Scope: population of Jefferson County, selected county subdivisions in Jefferson County, and entities that contain Jefferson County
0%5%10%15%20%Count#MountainWestUnited States of AmericaUnited StatesBoulderMontanaHelena Metro AreaHelena AreaJefferson CountyJeffersonWhitehall24.709269%24.709269%24.7%5,732,5615.73M23.760486%23.760486%23.8%17,834,66617.8M23.108006%23.108006%23.1%73,612,43873.6M23.029557%23.029557%23.0%1,870121.987686%21.987686%22.0%225,020225k21.723160%21.723160%21.7%16,85516.9k21.032670%21.032670%21.0%2,44016.374605%16.374605%16.4%5702
Count number of children
# rank of county subdivision out of 2 by %

Age Cohorts by County in the Helena Area

There are 2 counties in the Helena Area. This section compares Jefferson County to all of the counties in the Helena Area and to those entities that contain or substantially overlap with Jefferson County.

Children by County#50

Percentage of population aged 0 to 17 (%):
Scope: population of Jefferson County, selected other counties in the Helena Area, and entities that contain Jefferson County
0%5%10%15%20%Count#MountainWestUnited States of AmericaUnited StatesMontanaLewis and Clark CountyLewis and ClarkHelena Metro AreaHelena AreaJefferson CountyJefferson24.709269%24.709269%24.7%5,732,5615.73M23.760486%23.760486%23.8%17,834,66617.8M23.108006%23.108006%23.1%73,612,43873.6M21.987686%21.987686%22.0%225,020225k21.844550%21.844550%21.8%14,41514.4k121.723160%21.723160%21.7%16,85516.9k21.032670%21.032670%21.0%2,4402
Count number of children
# rank of county out of 2 by %

Age Cohorts by County in Montana

There are 56 counties in Montana. This section compares Jefferson County to the 50 most populous counties in Montana and to those entities that contain or substantially overlap with Jefferson County. The least populous of the compared counties has a population of 1,414.

Children by County#59

Percentage of population aged 0 to 17 (%):
Scope: population of Jefferson County, selected other counties in Montana, and entities that contain Jefferson County
0%10%20%30%Count#Big Horn CountyBig HornRoosevelt CountyRooseveltGlacier CountyGlacierBlaine CountyBlaineRosebud CountyRosebudHill CountyHillFallon CountyFallonMountainPondera CountyPonderaLake CountyLakeRichland CountyRichlandChouteau CountyChouteauPrairie CountyPrairieWestTeton CountyTetonYellowstone CountyYellowstoneSweet Grass CountySweet GrassWheatland CountyWheatlandUnited States of AmericaUnited StatesValley CountyValleyCascade CountyCascadeFlathead CountyFlatheadPhillips CountyPhillipsMusselshell CountyMusselshellMontanaDawson CountyDawsonLewis and Clark CountyLewis and ClarkCuster CountyCusterHelena Metro AreaHelena AreaSheridan CountySheridanMeagher CountyMeagherStillwater CountyStillwaterJefferson CountyJeffersonMcCone CountyMcConeGallatin CountyGallatinFergus CountyFergusBroadwater CountyBroadwaterRavalli CountyRavalliSilver Bow CountySilver BowMissoula CountyMissoulaToole CountyTooleDaniels CountyDanielsPark CountyParkLiberty CountyLibertyBeaverhead CountyBeaverheadCarbon CountyCarbonSanders CountySandersGranite CountyGraniteLincoln CountyLincolnMineral CountyMineralJudith Basin CountyJudith BasinPowder River CountyPowder RiverMadison CountyMadisonDeer Lodge CountyDeer LodgePowell CountyPowell33.547752%33.547752%33.5%4,433132.154942%32.154942%32.2%3,611231.653888%31.653888%31.7%4,335330.155848%30.155848%30.2%1,993429.364570%29.364570%29.4%2,745527.158328%27.158328%27.2%4,489625.334706%25.334706%25.3%738724.709269%24.709269%24.7%5,732,5615.73M24.602660%24.602660%24.6%1,517824.536863%24.536863%24.5%7,192924.525983%24.525983%24.5%2,7941024.498886%24.498886%24.5%1,4301124.469590%24.469590%24.5%3461223.760486%23.760486%23.8%17,834,66617.8M23.669029%23.669029%23.7%1,4361323.532290%23.532290%23.5%36,55636.6k1423.335168%23.335168%23.3%8481523.233760%23.233760%23.2%4901623.108006%23.108006%23.1%73,612,43873.6M22.610876%22.610876%22.6%1,7131722.513376%22.513376%22.5%18,47218.5k1822.425446%22.425446%22.4%21,23621.2k1922.192771%22.192771%22.2%9212022.101298%22.101298%22.1%1,0562121.987686%21.987686%22.0%225,020225k21.970099%21.970099%22.0%2,0722221.844550%21.844550%21.8%14,41514.4k2321.828047%21.828047%21.8%2,6152421.723160%21.723160%21.7%16,85516.9k21.700960%21.700960%21.7%7912521.632653%21.632653%21.6%4242621.301648%21.301648%21.3%1,9902721.032670%21.032670%21.0%2,4402820.619785%20.619785%20.6%3462920.534311%20.534311%20.5%20,11520.1k3020.404235%20.404235%20.4%2,3323120.397048%20.397048%20.4%1,1613220.306346%20.306346%20.3%8,3523319.861111%19.861111%19.9%6,8643419.418926%19.418926%19.4%21,96322.0k3519.163082%19.163082%19.2%9803619.138220%19.138220%19.1%3423719.080982%19.080982%19.1%3,0233819.022688%19.022688%19.0%4363918.718472%18.718472%18.7%1,7444018.549323%18.549323%18.5%1,9184118.505495%18.505495%18.5%2,1054218.493151%18.493151%18.5%5944318.211542%18.211542%18.2%3,5094418.044045%18.044045%18.0%7624516.304897%16.304897%16.3%3234616.140777%16.140777%16.1%2664715.710627%15.710627%15.7%1,2274815.616827%15.616827%15.6%1,4334914.780600%14.780600%14.8%1,02450
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 Jefferson County to the 50 most populous counties in the United States and to those entities that contain or substantially overlap with Jefferson 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 Jefferson County, selected other counties in the United States, and entities that contain Jefferson County
0%5%10%15%20%25%Count#Fresno CountyFresnoSalt Lake CountySalt LakeSan Bernardino CountySan BernardinoHarris CountyHarrisTarrant CountyTarrantDallas CountyDallasRiverside CountyRiversideBexar CountyBexarBronx CountyBronxMaricopa CountyMaricopaWake CountyWakeMountainMecklenburg CountyMecklenburgMilwaukee CountyMilwaukeeSacramento CountySacramentoWayne CountyWayneFairfax CountyFairfaxClark CountyClarkWestFranklin CountyFranklinFairfield CountyFairfieldMontgomery CountyMontgomeryContra Costa CountyContra CostaKings CountyKingsHillsborough 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 CountyOaklandMontanaPima CountyPimaHelena Metro AreaHelena AreaHonolulu CountyHonoluluBroward CountyBrowardCuyahoga CountyCuyahogaAlameda CountyAlamedaJefferson CountyJeffersonKing 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%249,554250k1124.709269%24.709269%24.7%5,732,5615.73M24.574361%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%493,981494k1723.760486%23.760486%23.8%17,834,66617.8M23.668593%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%608,369608k2223.197227%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%273,247273k3821.987686%21.987686%22.0%225,020225k21.856045%21.856045%21.9%219,290219k3921.723160%21.723160%21.7%16,85516.9k21.601744%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%344,212344k4321.032670%21.032670%21.0%2,44020.896492%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.

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More Maps to Explore

Cities:
Boulder
Towns:
Whitehall
Unincorporated Places:
Basin, Cardwell, Clancy, Elkhorn, Jefferson City, Montana City, Rader Creek, South Hills
ZIP Codes:
59601, 59631, 59632, 59634, 59635, 59638, 59701, 59711, 59721, 59752, 59759, 59760
Elementary School Districts:
Basin, Boulder, Cardwell, Clancy, Montana City, Three Forks, Whitehall, Willow Creek
Secondary School Districts:
Jefferson, Whitehall
Congressional District:
MT-At Large
State Senate Districts:
MT-36, MT-38
State House Districts:
MT-71, MT-75
Neighboring Counties:
Broadwater, Deer Lodge, Gallatin, Lewis and Clark, Madison, Powell, Silver Bow