Age and Sex in St. Louis County, Missouri (County)

Age Structure#1

Percentage in each age cohort per year of age.1 Gray areas represent percentile bands from the counties in Missouri.
Scope: population of Missouri, St. Louis County, and other counties in Missouri
St. Louis County
Missouri
Percentile:
0th - 100th
10th - 90th
20th - 80th
30th - 70th
40th - 60th
0.0%0.5%1.0%1.5%Count%85+80-8475-7970-7467-6965-6662-6460-6155-5950-5445-4940-4435-3930-3425-2922-24212018-1915-1710-145-90-426,27326.3k2.626%2.63%22,38122.4k2.237%2.24%27,89027.9k2.787%2.79%37,45737.5k3.744%3.74%28,49028.5k2.847%2.85%22,30222.3k2.229%2.23%37,86637.9k3.784%3.78%27,36527.4k2.735%2.73%73,83673.8k7.379%7.38%74,68374.7k7.464%7.46%65,00165.0k6.496%6.50%59,61459.6k5.958%5.96%57,88257.9k5.785%5.78%63,08463.1k6.305%6.30%63,34863.3k6.331%6.33%39,18439.2k3.916%3.92%12,01212.0k1.201%1.20%12,06212.1k1.206%1.21%25,38325.4k2.537%2.54%40,95941.0k4.094%4.09%64,62164.6k6.458%6.46%60,57060.6k6.054%6.05%58,29758.3k5.826%5.83%
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 Missouri and St. Louis County
Female Male
Missouri
St. Louis County
Shaded bar tips show excess over facing bar.
0.5%0.0%0.5%Count%Senior2Older Adult3Younger Adult4College5Children6-0.189522%-0.078459%-0.186594%-0.053100%-0.267980%0.27%0.189522%0.186594%0.189522%0.19%164,793165k16.470%16.5%-0.634817%-0.083069%-0.638228%-0.029300%-0.717886%0.72%0.634817%0.638228%0.634817%0.63%338,365338k33.818%33.8%-0.592424%-0.056113%-0.646272%-0.648537%0.65%0.592424%0.646272%0.003561%0.592424%0.59%223,498223k22.337%22.3%-0.586646%-0.687325%-0.586646%0.59%0.586646%0.062440%0.687325%0.039524%0.649087%0.65%49,45749.5k4.943%4.94%-0.609614%-0.624065%-0.609614%0.61%0.609614%0.027002%0.624065%0.030935%0.636616%0.64%224,447224k22.432%22.4%
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 Missouri and St. Louis County
Female Male
Missouri
St. Louis County
Shaded bar tips show excess over facing bar.
0.5%0.0%0.5%Count%85+80-8475-7970-7467-6965-6662-6460-6155-5950-5445-4940-4435-3930-3425-2922-24212018-1915-1710-145-90-4-0.053714%-0.056687%-0.042583%-0.040457%-0.110401%0.11%0.053714%0.042583%0.053714%0.05%26,27326.3k2.626%2.63%-0.171644%-0.104082%-0.161300%-0.075961%-0.275726%0.28%0.171644%0.161300%0.171644%0.17%22,38122.4k2.237%2.24%-0.235228%-0.087031%-0.237525%-0.063868%-0.322260%0.32%0.235228%0.237525%0.235228%0.24%27,89027.9k2.787%2.79%-0.330795%-0.087131%-0.340878%-0.060211%-0.417926%0.42%0.330795%0.340878%0.330795%0.33%37,45737.5k3.744%3.74%-0.421231%-0.106674%-0.438513%-0.048375%-0.527904%0.53%0.421231%0.438513%0.421231%0.42%28,49028.5k2.847%2.85%-0.505667%-0.103142%-0.510995%-0.059475%-0.608809%0.61%0.505667%0.510995%0.505667%0.51%22,30222.3k2.229%2.23%-0.570747%-0.119999%-0.561936%-0.054349%-0.690747%0.69%0.570747%0.561936%0.570747%0.57%37,86637.9k3.784%3.78%-0.650236%-0.067012%-0.631423%-0.019374%-0.717248%0.72%0.650236%0.631423%0.650236%0.65%27,36527.4k2.735%2.73%-0.694931%-0.086032%-0.668831%-0.053577%-0.780963%0.78%0.694931%0.668831%0.694931%0.69%73,83673.8k7.379%7.38%-0.701027%-0.090769%-0.709176%-0.020717%-0.791797%0.79%0.701027%0.709176%0.701027%0.70%74,68374.7k7.464%7.46%-0.610438%-0.078416%-0.627607%-0.015031%-0.688854%0.69%0.610438%0.627607%0.610438%0.61%65,00165.0k6.496%6.50%-0.565144%-0.061326%-0.595797%-0.016816%-0.626469%0.63%0.565144%0.595797%0.565144%0.57%59,61459.6k5.958%5.96%-0.542296%-0.072399%-0.600714%-0.614696%0.61%0.542296%0.600714%0.003614%0.542296%0.54%57,88257.9k5.785%5.78%-0.605921%-0.049132%-0.654635%-0.003990%-0.655053%0.66%0.605921%0.654635%0.605921%0.61%63,08463.1k6.305%6.30%-0.614456%-0.037339%-0.662038%-0.651795%0.65%0.614456%0.662038%0.003835%0.614456%0.61%63,34863.3k6.331%6.33%-0.616755%-0.071893%-0.675336%-0.688648%0.69%0.616755%0.675336%0.015600%0.616755%0.62%39,18439.2k3.916%3.92%-0.570481%-0.729184%-0.570481%0.57%0.570481%0.059567%0.729184%0.005116%0.630047%0.63%12,01212.0k1.201%1.20%-0.545694%-0.727583%-0.545694%0.55%0.545694%0.114136%0.727583%0.068601%0.659830%0.66%12,06212.1k1.206%1.21%-0.615205%-0.646267%-0.615205%0.62%0.615205%0.038029%0.646267%0.042189%0.653234%0.65%25,38325.4k2.537%2.54%-0.666294%-0.640257%-0.666294%0.67%0.666294%0.031949%0.640257%0.032923%0.698242%0.70%40,95941.0k4.094%4.09%-0.634565%-0.630677%-0.634565%0.63%0.634565%0.022567%0.630677%0.033794%0.657132%0.66%64,62164.6k6.458%6.46%-0.591169%-0.629993%-0.591169%0.59%0.591169%0.028384%0.629993%0.027011%0.619553%0.62%60,57060.6k6.054%6.05%-0.569101%-0.601810%-0.569101%0.57%0.569101%0.027085%0.601810%0.030807%0.596186%0.60%58,29758.3k5.826%5.83%
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 Missouri and St. Louis County
More Females More Males
Missouri
St. Louis County
100%50%0%M:FFM85+80-8475-7970-7467-6965-6662-6460-6155-5950-5445-4940-4435-3930-3425-2922-24212018-1915-1710-145-90-4-105.535527%-95.007993%-105.535527%105.5%0.4870.4967.271%67.3%32.729%32.7%-60.638174%-47.093368%-60.638174%60.6%0.6230.6261.633%61.6%38.367%38.4%-36.998640%-26.889087%-36.998640%37.0%0.7300.7357.806%57.8%42.194%42.2%-26.339960%-17.663633%-26.339960%26.3%0.7920.7955.819%55.8%44.181%44.2%-25.324264%-11.031524%-25.324264%25.3%0.7980.8055.620%55.6%44.380%44.4%-20.397272%-11.639135%-20.397272%20.4%0.8310.8354.627%54.6%45.373%45.4%-21.024982%-9.671672%-21.024982%21.0%0.8260.8354.756%54.8%45.244%45.2%-10.305872%-3.068318%-10.305872%10.3%0.9070.9152.450%52.5%47.550%47.5%-12.379911%-8.010600%-12.379911%12.4%0.8900.8952.915%52.9%47.085%47.1%-12.948020%-2.921328%-12.948020%12.9%0.8850.8953.040%53.0%46.960%47.0%-12.845869%-2.394901%-12.845869%12.8%0.8860.8953.018%53.0%46.982%47.0%-10.851342%-2.822464%-10.851342%10.9%0.9020.9052.573%52.6%47.427%47.4%-13.350534%-13.350534%13.4%0.601629%0.8820.8853.129%53.1%46.871%46.9%-8.108732%-0.609550%-8.108732%8.1%0.9250.9251.948%51.9%48.052%48.1%-6.076773%-6.076773%6.1%0.579303%0.9430.9451.474%51.5%48.526%48.5%-11.656674%-11.656674%11.7%2.310029%0.8960.9052.754%52.8%47.246%47.2%10.441486%0.701580%10.441486%10.4%1.1041.1047.519%47.5%52.481%52.5%20.915751%9.428656%20.915751%20.9%1.2091.2145.266%45.3%54.734%54.7%6.181464%6.528095%6.181464%6.2%1.0621.0648.501%48.5%51.499%51.5%4.795000%5.142106%4.795000%4.8%1.0481.0548.829%48.8%51.171%51.2%3.556354%5.358376%3.556354%3.6%1.0361.0449.126%49.1%50.874%50.9%4.801352%4.287578%4.801352%4.8%1.0481.0548.828%48.8%51.172%51.2%4.759229%5.119065%4.759229%4.8%1.0481.0548.838%48.8%51.162%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 Subdivision in St. Louis County

Children Age Cohorts by County Subdivision#5

Percentage of population aged 0 to 17 (%):
15.2%18.3%21.3%24.4%27.4%30.5%

College Age Cohorts by County Subdivision#6

Percentage of population aged 18 to 21 (%):
3.0%5.5%7.9%10.3%12.7%15.2%

20s Age Cohorts by County Subdivision#7

Percentage of population aged 22 to 29 (%):
4.4%7.2%9.9%12.7%15.4%18.2%

30s Age Cohorts by County Subdivision#8

Percentage of population aged 30 to 39 (%):
7.1%8.7%10.3%11.8%13.4%15.0%

40s Age Cohorts by County Subdivision#9

Percentage of population aged 40 to 49 (%):
10.7%11.7%12.6%13.5%14.4%15.4%

50s Age Cohorts by County Subdivision#10

Percentage of population aged 50 to 59 (%):
11.1%12.6%14.0%15.4%16.8%18.3%

60s Age Cohorts by County Subdivision#11

Percentage of population aged 60 to 69 (%):
8.6%9.9%11.2%12.5%13.8%15.2%

70s Age Cohorts by County Subdivision#12

Percentage of population aged 70 to 79 (%):
3.8%5.1%6.5%7.8%9.1%10.5%

80+ Age Cohorts by County Subdivision#13

Percentage of population aged 80 and older (%):
1.7%3.1%4.4%5.7%7.0%8.3%
Road Data ©OpenStreetMap

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Map of Age Cohorts by Tract in St. Louis County

Children Age Cohorts by Tract#14

Percentage of population aged 0 to 17 (%):
3%11%18%26%34%42%

College Age Cohorts by Tract#15

Percentage of population aged 18 to 21 (%):
0%11%22%33%44%55%

20s Age Cohorts by Tract#16

Percentage of population aged 22 to 29 (%):
1%7%13%19%24%30%

30s Age Cohorts by Tract#17

Percentage of population aged 30 to 39 (%):
4.1%7.8%11.5%15.2%18.9%22.7%

40s Age Cohorts by Tract#18

Percentage of population aged 40 to 49 (%):
1.9%5.5%9.1%12.7%16.3%19.9%

50s Age Cohorts by Tract#19

Percentage of population aged 50 to 59 (%):
5.0%9.9%14.7%19.5%24.4%29.2%

60s Age Cohorts by Tract#20

Percentage of population aged 60 to 69 (%):
4%10%15%21%26%32%

70s Age Cohorts by Tract#21

Percentage of population aged 70 to 79 (%):
1.4%4.0%6.5%9.0%11.5%14.0%

80+ Age Cohorts by Tract#22

Percentage of population aged 80 and older (%):
0.1%3.8%7.4%11.0%14.6%18.3%
Road Data ©OpenStreetMap

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Map of Age Cohorts by Block Group in St. Louis County

Children Age Cohorts by Block Group#23

Percentage of population aged 0 to 17 (%):
0%11%22%33%44%56%

College Age Cohorts by Block Group#24

Percentage of population aged 18 to 21 (%):
0%17%33%50%67%84%

20s Age Cohorts by Block Group#25

Percentage of population aged 22 to 29 (%):
0%10%20%29%39%50%

30s Age Cohorts by Block Group#26

Percentage of population aged 30 to 39 (%):
0%6%13%19%25%32%

40s Age Cohorts by Block Group#27

Percentage of population aged 40 to 49 (%):
0%7%14%20%27%34%

50s Age Cohorts by Block Group#28

Percentage of population aged 50 to 59 (%):
0%15%30%45%60%76%

60s Age Cohorts by Block Group#29

Percentage of population aged 60 to 69 (%):
0%7%14%22%29%36%

70s Age Cohorts by Block Group#30

Percentage of population aged 70 to 79 (%):
0%5%11%16%22%28%

80+ Age Cohorts by Block Group#31

Percentage of population aged 80 and older (%):
0%11%21%32%42%53%
Road Data ©OpenStreetMap

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Age Cohorts by Place in St. Louis County

There are 100 places that are fully or partially contained within St. Louis County (99 fully and 1 partially). This section compares all 100 of those to each other, St. Louis County, and other entities that contain or substantially overlap with St. Louis County.

Children by Place#32

Percentage of population aged 0 to 17 (%):
Scope: population of St. Louis County, selected places in St. Louis County, and entities that contain St. Louis County
0%10%20%30%40%Count#Glasgow VillageGlasgow VlgWellstonCountry Club HillsCountry Club HlsCountry Life AcresBel-RidgeGlen Echo ParkGln Echo PkSpanish LakePagedaleEdmundsonCastle PointGlendalePine LawnEurekaDellwoodBerkeleyOlivetteWildwoodHillsdaleJenningsFlordell HillsFlordell HlsLadueVelda Village HillsVelda Vlg HlsFergusonFrontenacWarson WoodsFlorissantKinlochUplands ParkWebster GrovesWebster GrvsMoline AcresVinita ParkWest North CentralMidwestKirkwoodUnited States of AmericaUnited StatesMissouriSt. Louis Metro AreaSt. LouisSt. Louis CountySt. LouisManchesterChesterfieldOverlandGrantwood VillageGrantwood VlgOakvillePasadena ParkValley ParkRichmond HeightsRichmond HtsMaplewoodBel-NorBelleriveMarlboroughMackenzieChamp41.694537%41.694537%41.7%2,244139.266738%39.266738%39.3%739235.398230%35.398230%35.4%480334.814815%34.814815%34.8%47432.988930%32.988930%33.0%894532.575758%32.575758%32.6%43632.012562%32.012562%32.0%6,116731.760436%31.760436%31.8%1,050831.345029%31.345029%31.3%268931.172937%31.172937%31.2%9861030.927835%30.927835%30.9%1,8301130.908560%30.908560%30.9%1,0581229.694198%29.694198%29.7%3,1171328.645418%28.645418%28.6%1,4381428.374504%28.374504%28.4%2,5731527.407407%27.407407%27.4%2,1461627.169780%27.169780%27.2%9,7171726.711310%26.711310%26.7%3591826.645874%26.645874%26.6%3,9301926.535948%26.535948%26.5%2032026.518242%26.518242%26.5%2,2752126.482618%26.482618%26.5%2592226.341811%26.341811%26.3%5,5412325.857669%25.857669%25.9%9122425.775401%25.775401%25.8%4822525.504615%25.504615%25.5%13,31813.3k2625.324675%25.324675%25.3%782725.257732%25.257732%25.3%982824.927524%24.927524%24.9%5,7612924.906600%24.906600%24.9%6003023.925729%23.925729%23.9%4513623.689691%23.689691%23.7%4,971,0164.97M23.217458%23.217458%23.2%15,712,75815.7M23.180271%23.180271%23.2%6,4014323.108006%23.108006%23.1%73,612,43873.6M23.023174%23.023174%23.0%1,395,1241.40M22.816573%22.816573%22.8%639,651640k22.432138%22.432138%22.4%224,447224k22.042567%22.042567%22.0%4,0085021.669426%21.669426%21.7%10,34010.3k5221.139844%21.139844%21.1%3,3685720.335637%20.335637%20.3%2066419.808350%19.808350%19.8%7,2976919.611650%19.611650%19.6%1017118.789534%18.789534%18.8%1,3077817.464058%17.464058%17.5%1,4828514.846502%14.846502%14.8%1,1809212.562814%12.562814%12.6%1759610.555556%10.555556%10.6%19977.483677%7.483677%7.5%149986.250000%6.250000%6.3%8990.000000%0.000000%0.0%0100
Count number of children
# rank of place out of 100 by %

Age Cohorts by County Subdivision in St. Louis County

There are 28 county subdivisions in St. Louis County. This section compares all 28 of those to each other, St. Louis County, and other entities that contain or substantially overlap with St. Louis County.

Children by County Subdivision#41

Percentage of population aged 0 to 17 (%):
Scope: population of St. Louis County, selected county subdivisions in St. Louis County, and entities that contain St. Louis County
0%10%20%30%Count#St. Ferdinand TownshipSt. FerdinandNorwood TownshipNorwoodWildhorse TownshipWildhorseMeramec TownshipMeramecLewis and Clark TownshipLewis and ClarkFlorissant TownshipFlorissantChesterfield TownshipChesterfieldJefferson TownshipJeffersonAirport TownshipAirportWest North CentralSpanish Lake TownshipSpanish LkMidwestFerguson TownshipFergusonUniversity TownshipUnivUnited States of AmericaUnited StatesMissouriBonhomme TownshipBonhommeSt. Louis Metro AreaSt. LouisSt. Louis CountySt. LouisLafayette TownshipLafayetteNormandy TownshipNormandyMidland TownshipMidlandMaryland Heights TownshipMaryland HtsClayton TownshipClaytonMissouri River TownshipMissouri RivGravois TownshipGravoisQueeny TownshipQueenyCreve Coeur TownshipCreve CoeurOakville TownshipOakvilleLemay TownshipLemayNorthwest TownshipNWConcord TownshipConcordTesson Ferry TownshipTesson FerryHadley TownshipHadley30.439633%30.439633%30.4%10,09510.1k129.395973%29.395973%29.4%9,855225.720877%25.720877%25.7%9,589325.543126%25.543126%25.5%9,841425.262308%25.262308%25.3%9,703525.022072%25.022072%25.0%8,786624.937040%24.937040%24.9%10,00110.0k723.953089%23.953089%24.0%8,517823.736283%23.736283%23.7%8,241923.689691%23.689691%23.7%4,971,0164.97M23.260857%23.260857%23.3%8,2591023.217458%23.217458%23.2%15,712,75815.7M23.212913%23.212913%23.2%7,8521123.145510%23.145510%23.1%7,5541223.108006%23.108006%23.1%73,612,43873.6M23.023174%23.023174%23.0%1,395,1241.40M23.013276%23.013276%23.0%8,5111322.816573%22.816573%22.8%639,651640k22.432138%22.432138%22.4%224,447224k22.230409%22.230409%22.2%7,5431421.985501%21.985501%22.0%6,9451521.659675%21.659675%21.7%7,5381621.376130%21.376130%21.4%8,0651721.371960%21.371960%21.4%7,8201821.120653%21.120653%21.1%7,4031921.073373%21.073373%21.1%7,4332020.993619%20.993619%21.0%7,9952120.457999%20.457999%20.5%7,5402219.495687%19.495687%19.5%7,3452319.482990%19.482990%19.5%6,9642419.358267%19.358267%19.4%5,8282519.138870%19.138870%19.1%7,2412617.057008%17.057008%17.1%6,7442715.226110%15.226110%15.2%5,23928
Count number of children
# rank of county subdivision out of 28 by %

Age Cohorts by County in the St. Louis Area

There are 15 counties in the St. Louis Area. This section compares St. Louis County to all of the counties in the St. Louis Area and to those entities that contain or substantially overlap with St. Louis County.

Children by County#50

Percentage of population aged 0 to 17 (%):
Scope: population of St. Louis County, selected other counties in the St. Louis Area, and entities that contain St. Louis County
0%5%10%15%20%25%Count#Lincoln CountyLincolnWarren CountyWarrenSt. Charles CountySt. CharlesSt. Clair CountySt. ClairJefferson CountyJeffersonWest North CentralFranklin CountyFranklinMidwestUnited States of AmericaUnited StatesMonroe CountyMonroeMissouriSt. Louis Metro AreaSt. LouisSt. Louis CountySt. LouisMadison CountyMadisonMacoupin CountyMacoupinJersey CountyJerseyClinton CountyClintonCalhoun CountyCalhounSt. Louis CitySt. LouisBond CountyBond26.327230%26.327230%26.3%14,29214.3k124.460799%24.460799%24.5%8,143224.415568%24.415568%24.4%92,74492.7k324.119532%24.119532%24.1%64,05464.1k424.043281%24.043281%24.0%53,48553.5k523.689691%23.689691%23.7%4,971,0164.97M23.540362%23.540362%23.5%24,02624.0k623.217458%23.217458%23.2%15,712,75815.7M23.108006%23.108006%23.1%73,612,43873.6M23.045426%23.045426%23.0%7,767723.023174%23.023174%23.0%1,395,1241.40M22.816573%22.816573%22.8%639,651640k22.432138%22.432138%22.4%224,447224k822.230928%22.230928%22.2%59,30359.3k921.668603%21.668603%21.7%10,07210.1k1021.425070%21.425070%21.4%4,8081121.374610%21.374610%21.4%8,0921221.039903%21.039903%21.0%1,0441320.242382%20.242382%20.2%63,97264.0k1419.851783%19.851783%19.9%3,40215
Count number of children
# rank of county out of 15 by %

Age Cohorts by County in Missouri

There are 115 counties in Missouri. This section compares St. Louis County to the 50 most populous counties in Missouri and to those entities that contain or substantially overlap with St. Louis County. The least populous of the compared counties has a population of 22,921.

Children by County#59

Percentage of population aged 0 to 17 (%):
Scope: population of St. Louis County, selected other counties in Missouri, and entities that contain St. Louis County
0%10%20%Count#Webster CountyWebsterLincoln CountyLincolnChristian CountyChristianDunklin CountyDunklinLawrence CountyLawrenceJasper CountyJasperCass CountyCassPettis CountyPettisClay CountyClayWarren CountyWarrenSt. Charles CountySt. CharlesHowell CountyHowellLaclede CountyLacledeNewton CountyNewtonJackson CountyJacksonJefferson CountyJeffersonScott CountyScottPlatte CountyPlatteWest North CentralCrawford CountyCrawfordPolk CountyPolkMarion CountyMarionRay CountyRayMiller CountyMillerFranklin CountyFranklinTexas CountyTexasButler CountyButlerLafayette CountyLafayetteAudrain CountyAudrainMidwestWashington CountyWashingtonUnited States of AmericaUnited StatesSaline CountySalineMissouriBuchanan CountyBuchananCole CountyColeBarry CountyBarryPulaski CountyPulaskiSt. Louis Metro AreaSt. LouisRandolph CountyRandolphSt. Louis CountySt. LouisStoddard CountyStoddardJohnson CountyJohnsonCallaway CountyCallawayCape Girardeau CountyCape GirardeauSt. Francois CountySt. FrancoisTaney CountyTaneyPhelps CountyPhelpsGreene CountyGreeneBoone CountyBooneSt. Louis CitySt. LouisCamden CountyCamdenAdair CountyAdairStone CountyStoneNodaway CountyNodaway27.217802%27.217802%27.2%10,09110.1k126.327230%26.327230%26.3%14,29214.3k226.155046%26.155046%26.2%21,46121.5k325.915385%25.915385%25.9%8,104425.531358%25.531358%25.5%9,754525.408090%25.408090%25.4%29,82329.8k625.144092%25.144092%25.1%25,47725.5k725.032588%25.032588%25.0%10,56210.6k824.946061%24.946061%24.9%58,15858.2k924.460799%24.460799%24.5%8,1431024.415568%24.415568%24.4%92,74492.7k1124.353657%24.353657%24.4%9,8061224.272638%24.272638%24.3%8,6181324.219880%24.219880%24.2%14,22714.2k1424.083769%24.083769%24.1%164,647165k1524.043281%24.043281%24.0%53,48553.5k1623.983177%23.983177%24.0%9,3521723.971781%23.971781%24.0%22,76622.8k1823.689691%23.689691%23.7%4,971,0164.97M23.678957%23.678957%23.7%5,8121923.662135%23.662135%23.7%7,3622023.650288%23.650288%23.7%6,8252123.594084%23.594084%23.6%5,4082223.585622%23.585622%23.6%5,8992323.540362%23.540362%23.5%24,02624.0k2423.511094%23.511094%23.5%6,0402523.417353%23.417353%23.4%10,04310.0k2623.382842%23.382842%23.4%7,6672723.244936%23.244936%23.2%6,0132823.217458%23.217458%23.2%15,712,75815.7M23.166147%23.166147%23.2%5,7922923.108006%23.108006%23.1%73,612,43873.6M23.067976%23.067976%23.1%5,3553023.023174%23.023174%23.0%1,395,1241.40M22.971537%22.971537%23.0%20,54020.5k3122.915552%22.915552%22.9%17,55417.6k3222.905701%22.905701%22.9%8,1813322.832164%22.832164%22.8%12,17012.2k3422.816573%22.816573%22.8%639,651640k22.459232%22.459232%22.5%5,6333522.432138%22.432138%22.4%224,447224k3622.159930%22.159930%22.2%6,6013721.831492%21.831492%21.8%11,83911.8k3821.564898%21.564898%21.6%9,6383921.447323%21.447323%21.4%16,74816.7k4021.444965%21.444965%21.4%14,20314.2k4121.248584%21.248584%21.2%11,44311.4k4221.196440%21.196440%21.2%9,5034321.026173%21.026173%21.0%60,01960.0k4420.523461%20.523461%20.5%35,45935.5k4520.242382%20.242382%20.2%63,97264.0k4618.631093%18.631093%18.6%8,2264718.514894%18.514894%18.5%4,7304817.517710%17.517710%17.5%5,4654916.724572%16.724572%16.7%3,85150
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 St. Louis County to the 50 most populous counties in the United States and to those entities that contain or substantially overlap with St. Louis 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 St. Louis County, selected other counties in the United States, and entities that contain St. Louis County
0%10%20%Count#Fresno CountyFresnoSalt Lake CountySalt LakeSan Bernardino CountySan BernardinoHarris CountyHarrisTarrant CountyTarrantDallas CountyDallasRiverside CountyRiversideBexar CountyBexarBronx CountyBronxMaricopa CountyMaricopaWake CountyWakeMecklenburg CountyMecklenburgMilwaukee CountyMilwaukeeSacramento CountySacramentoWayne CountyWayneFairfax CountyFairfaxClark CountyClarkWest North CentralFranklin CountyFranklinFairfield CountyFairfieldMontgomery CountyMontgomeryContra Costa CountyContra CostaKings CountyKingsMidwestHillsborough CountyHillsboroughUnited States of AmericaUnited StatesSanta Clara CountySanta ClaraTravis CountyTravisOrange CountyOrangeMissouriWestchester CountyWestchesterFulton CountyFultonLos Angeles CountyLos AngelesSt. Louis Metro AreaSt. LouisOrange 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%249,554250k1124.574361%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%15,712,75815.7M23.197227%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%721,172721k2623.023174%23.023174%23.0%1,395,1241.40M22.943185%22.943185%22.9%222,372222k2722.934276%22.934276%22.9%228,599229k2822.837323%22.837323%22.8%2,296,7852.30M2922.816573%22.816573%22.8%639,651640k22.760229%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
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:
Ballwin, Bella Villa, Bellefontaine Neighbors, Berkeley, Beverly Hills, Black Jack, Breckenridge Hills, Brentwood, Bridgeton, Calverton Park, Charlack, Chesterfield, Clarkson Valley, Clayton, Cool Valley, Country Club Hills, Crestwood, Creve Coeur, Crystal Lake Park, Dellwood, Des Peres, Edmundson, Ellisville, Eureka, Fenton, Ferguson, Flordell Hills, Florissant, Frontenac, Glendale, Green Park, Greendale, Hazelwood, Huntleigh, Jennings, Kinloch, Kirkwood, Ladue, Lakeshire, Manchester, Maplewood, Maryland Heights, Moline Acres, Normandy, Northwoods, Oakland, Olivette, Overland, Pacific, Pagedale, Pasadena Hills, Pine Lawn, Richmond Heights, Rock Hill, Shrewsbury, St. Ann, St. John, Sunset Hills, Town and Country, University City, Valley Park, Velda City, Velda Village Hills, Vinita Park, Warson Woods, Webster Groves, Wellston, Wildwood, Winchester, Woodson Terrace
Towns:
Grantwood Village, Norwood Court
Townships:
Airport, Bonhomme, Chesterfield, Clayton, Concord, Creve Coeur, Ferguson, Florissant, Gravois, Hadley, Jefferson, Lafayette, Lemay, Lewis and Clark, Maryland Heights, Meramec, Midland, Missouri River, Normandy, Northwest, Norwood, Oakville, Queeny, Spanish Lake, St. Ferdinand, Tesson Ferry, University, Wildhorse
Unincorporated Places:
Affton, Castle Point, Concord, Glasgow Village, Lemay, Mehlville, Oakville, Old Jamestown, Sappington, Spanish Lake
Villages:
Bel-Nor, Bel-Ridge, Bellerive, Champ, Country Life Acres, Glen Echo Park, Hanley Hills, Hillsdale, Mackenzie, Marlborough, Pasadena Park, Riverview, Sycamore Hills, Twin Oaks, Uplands Park, Vinita Terrace, Westwood, Wilbur Park
ZIP Codes:
62236, 62295, 63005, 63011, 63017, 63021, 63025, 63026, 63031, 63033, 63034, 63038, 63040, 63042, 63043, 63044, 63045, 63049, 63069, 63074, 63088, 63105, 63114, 63117, 63119, 63120, 63121, 63122, 63123, 63124, 63125, 63126, 63127, 63128, 63129, 63130, 63131, 63132, 63133, 63134, 63135, 63136, 63137, 63138, 63140, 63141, 63143, 63144, 63146, 63147
Unified School Districts:
Affton 101, Bayless, Brentwood, Clayton, Ferguson-Florissant R-II, Hancock Place, Hazelwood, Jennings, Kirkwood R-VII, Ladue, Lindbergh, Maplewood-Richmond Heights, Mehlville R-IX, Meramec Valley R-III, Normandy Collaborative, Parkway C-2, Pattonville R-III, Ritenour, Riverview Gardens, Rockwood R-VI, University, Valley Park, Webster Groves
Congressional Districts:
MO-1, MO-2
State Senate Districts:
MO-1, MO-4, MO-13, MO-14, MO-15, MO-24, MO-26
State House Districts:
MO-66, MO-67, MO-68, MO-69, MO-70, MO-71, MO-72, MO-73, MO-74, MO-75, MO-83, MO-85, MO-86, MO-87, MO-88, MO-89, MO-90, MO-91, MO-92, MO-93, MO-94, MO-95, MO-96, MO-97, MO-98, MO-99, MO-100, MO-101, MO-110
Neighboring Cities:
St. Louis
Neighboring Counties:
Franklin, Jefferson, Madison, Monroe, St. Charles, St. Clair
Nearby Counties:
Calhoun, Greene, Jersey, Lincoln, Macoupin, Randolph, St. Francois, Ste. Genevieve, Warren, Washington