Age and Sex in Boulder, Boulder County, Colorado (Census County Division)

Age Structure#1

Percentage in each age cohort per year of age.1 Gray areas represent percentile bands from the county subdivisions in Boulder County.
Scope: population of Boulder County, Boulder, and other county subdivisions in Boulder County
Boulder
Boulder County
Percentile:
0th - 100th
10th - 90th
20th - 80th
30th - 70th
40th - 60th
0%1%2%3%4%Count%85+80-8475-7970-7467-6965-6662-6460-6155-5950-5445-4940-4435-3930-3425-2922-24212018-1915-1710-145-90-41,9541.587%1.59%1,6161.313%1.31%2,0711.682%1.68%3,1452.555%2.55%2,9592.404%2.40%2,2711.845%1.84%3,7413.039%3.04%2,6432.147%2.15%6,5115.289%5.29%6,9115.614%5.61%6,6125.371%5.37%6,8095.531%5.53%7,3375.960%5.96%8,3996.823%6.82%10,33610.3k8.396%8.40%11,69011.7k9.496%9.50%5,5444.504%4.50%5,7504.671%4.67%9,7447.915%7.92%2,9392.387%2.39%5,2614.274%4.27%4,7363.847%3.85%4,1223.348%3.35%
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 Boulder County and Boulder
Female Male
Boulder County
Boulder
Shaded bar tips show excess over facing bar.
2%1%0%1%2%Count%Senior2Older Adult3Younger Adult4College5Children6-0.138707%-0.038857%-0.151567%-0.034364%-0.177564%0.2%0.138707%0.151567%0.138707%0.1%14,01614.0k11.386%11.4%-0.535430%-0.008806%-0.647329%-0.015989%-0.544236%0.5%0.535430%0.647329%0.535430%0.5%33,22733.2k26.992%27.0%-0.768068%-0.669280%-0.768068%0.8%0.768068%0.168064%0.669280%0.073594%0.936133%0.9%37,76237.8k30.676%30.7%-2.078172%-1.166068%-2.078172%2.1%2.078172%0.116165%1.166068%0.042919%2.194336%2.2%21,03821.0k17.090%17.1%-0.356934%-0.544972%-0.356934%0.4%0.356934%0.055961%0.544972%0.030329%0.412895%0.4%17,05817.1k13.857%13.9%
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 Boulder County and Boulder
Female Male
Boulder County
Boulder
Shaded bar tips show excess over facing bar.
2%1%0%1%2%Count%85+80-8475-7970-7467-6965-6662-6460-6155-5950-5445-4940-4435-3930-3425-2922-24212018-1915-1710-145-90-4-0.028838%-0.041531%-0.032687%-0.027073%-0.070369%0.1%0.028838%0.032687%0.028838%0.0%1,9541.587%1.59%-0.120389%-0.021771%-0.101732%-0.069690%-0.142160%0.1%0.120389%0.101732%0.120389%0.1%1,6161.313%1.31%-0.158569%-0.019334%-0.184418%-0.031851%-0.177903%0.2%0.158569%0.184418%0.158569%0.2%2,0711.682%1.68%-0.232492%-0.045979%-0.267422%-0.020257%-0.278471%0.3%0.232492%0.267422%0.232492%0.2%3,1452.555%2.55%-0.373677%-0.053885%-0.401536%-0.013059%-0.427562%0.4%0.373677%0.401536%0.373677%0.4%2,9592.404%2.40%-0.426885%-0.068643%-0.480474%-0.077876%-0.495528%0.5%0.426885%0.480474%0.426885%0.4%2,2711.845%1.84%-0.483072%-0.046845%-0.561110%-0.004884%-0.529917%0.5%0.483072%0.561110%0.483072%0.5%3,7413.039%3.04%-0.520711%-0.032087%-0.607082%-0.071983%-0.552798%0.6%0.520711%0.607082%0.520711%0.5%2,6432.147%2.15%-0.521523%-0.663394%-0.012549%-0.521523%0.5%0.521523%0.014785%0.663394%0.536308%0.5%6,5115.289%5.29%-0.556941%-0.008936%-0.677536%-0.024589%-0.565877%0.6%0.556941%0.677536%0.556941%0.6%6,9115.614%5.61%-0.535820%-0.661611%-0.006944%-0.535820%0.5%0.535820%0.002599%0.661611%0.538420%0.5%6,6125.371%5.37%-0.547355%-0.011535%-0.654604%-0.004141%-0.558891%0.6%0.547355%0.654604%0.547355%0.5%6,8095.531%5.53%-0.583748%-0.631416%-0.583748%0.6%0.583748%0.024533%0.631416%0.008600%0.608281%0.6%7,3375.960%5.96%-0.616892%-0.617656%-0.616892%0.6%0.616892%0.130787%0.617656%0.026054%0.747679%0.7%8,3996.823%6.82%-0.763113%-0.627594%-0.763113%0.8%0.763113%0.153045%0.627594%0.124283%0.916158%0.9%10,33610.3k8.396%8.40%-1.335489%-0.887902%-1.335489%1.3%1.335489%0.494445%0.887902%0.176667%1.829934%1.8%11,69011.7k9.496%9.50%-2.096652%-1.238052%-2.096652%2.1%2.096652%0.310314%1.238052%0.116256%2.406967%2.4%5,5444.504%4.50%-2.292427%-1.170846%-2.292427%2.3%2.292427%0.086108%1.170846%0.025162%2.378535%2.4%5,7504.671%4.67%-1.961804%-1.127688%-1.961804%2.0%1.961804%0.034118%1.127688%0.015129%1.995922%2.0%9,7447.915%7.92%-0.357159%-0.570665%-0.357159%0.4%0.357159%0.081505%0.570665%0.021128%0.438664%0.4%2,9392.387%2.39%-0.378064%-0.590838%-0.002421%-0.378064%0.4%0.378064%0.098618%0.590838%0.476682%0.5%5,2614.274%4.27%-0.370752%-0.547775%-0.370752%0.4%0.370752%0.027945%0.547775%0.061919%0.398697%0.4%4,7363.847%3.85%-0.321850%-0.478467%-0.321850%0.3%0.321850%0.025995%0.478467%0.037011%0.347844%0.3%4,1223.348%3.35%
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 Boulder County and Boulder
More Females More Males
Boulder County
Boulder
100%50%0%M:FFM85+80-8475-7970-7467-6965-6662-6460-6155-5950-5445-4940-4435-3930-3425-2922-24212018-1915-1710-145-90-4-144.014085%-82.825822%-144.014085%144.0%0.4100.4170.931%70.9%29.069%29.1%-18.083671%-68.503444%-18.083671%18.1%0.8470.8554.146%54.1%45.854%45.9%-12.192623%-17.271157%-12.192623%12.2%0.8910.8952.873%52.9%47.127%47.1%-19.776380%-7.575036%-19.776380%19.8%0.8350.8354.499%54.5%45.501%45.5%-14.420290%-3.252247%-14.420290%14.4%0.8740.8753.363%53.4%46.637%46.6%-16.079924%-16.208154%-16.079924%16.1%0.8610.8653.721%53.7%46.279%46.3%-9.697309%-0.870388%-9.697309%9.7%0.9120.9152.312%52.3%47.688%47.7%-6.162246%-11.857293%-6.162246%6.2%0.9420.9451.495%51.5%48.505%48.5%-1.891684%2.834891%2.834891%2.8%1.0281.0349.301%49.3%50.699%50.7%-1.604434%-3.629184%-1.604434%1.6%0.9840.9850.398%50.4%49.602%49.6%-1.049490%0.485143%0.485143%0.5%1.0051.0049.879%49.9%50.121%50.1%-2.107450%-0.632542%-2.107450%2.1%0.9790.9850.521%50.5%49.479%49.5%4.202616%1.361985%4.202616%4.2%1.0421.0448.971%49.0%51.029%51.0%21.200948%4.218234%21.200948%21.2%1.2121.2145.208%45.2%54.792%54.8%20.055354%19.803086%20.055354%20.1%1.2011.2045.443%45.4%54.557%54.6%37.023520%19.897166%37.023520%37.0%1.3701.3742.190%42.2%57.810%57.8%14.800465%9.390275%14.800465%14.8%1.1481.1546.555%46.6%53.445%53.4%3.756201%2.149075%3.756201%3.8%1.0381.0449.078%49.1%50.922%50.9%1.739130%1.341618%1.739130%1.7%1.0171.0249.569%49.6%50.431%50.4%22.820318%3.702326%22.820318%22.8%1.2281.2344.879%44.9%55.121%55.1%-0.409704%26.085088%26.085088%26.1%1.2611.2644.231%44.2%55.769%55.8%7.537248%11.303640%7.537248%7.5%1.0751.0848.184%48.2%51.816%51.8%8.076729%7.735322%8.076729%8.1%1.0811.0848.059%48.1%51.941%51.9%
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 Neighborhood in Boulder

Children Age Cohorts by Neighborhood#5

Percentage of population aged 0 to 17 (%):
0%7%13%20%26%33%

College Age Cohorts by Neighborhood#6

Percentage of population aged 18 to 21 (%):
0%18%36%53%71%90%

20s Age Cohorts by Neighborhood#7

Percentage of population aged 22 to 29 (%):
1%9%16%23%30%38%

30s Age Cohorts by Neighborhood#8

Percentage of population aged 30 to 39 (%):
0%6%12%18%24%30%

40s Age Cohorts by Neighborhood#9

Percentage of population aged 40 to 49 (%):
0.0%5.0%9.9%14.9%19.9%24.9%

50s Age Cohorts by Neighborhood#10

Percentage of population aged 50 to 59 (%):
0.0%4.1%8.3%12.4%16.5%20.7%

60s Age Cohorts by Neighborhood#11

Percentage of population aged 60 to 69 (%):
0%7%15%22%29%37%

70s Age Cohorts by Neighborhood#12

Percentage of population aged 70 to 79 (%):
0.0%4.6%9.3%13.9%18.6%23.3%

80+ Age Cohorts by Neighborhood#13

Percentage of population aged 80 and older (%):
0.0%3.4%6.9%10.3%13.8%17.3%
Road Data ©OpenStreetMap

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Map of Age Cohorts by Tract in Boulder

Children Age Cohorts by Tract#14

Percentage of population aged 0 to 17 (%):
1.9%6.4%10.8%15.3%19.7%24.2%

College Age Cohorts by Tract#15

Percentage of population aged 18 to 21 (%):
0%15%29%43%57%72%

20s Age Cohorts by Tract#16

Percentage of population aged 22 to 29 (%):
4%11%18%25%31%39%

30s Age Cohorts by Tract#17

Percentage of population aged 30 to 39 (%):
3.9%7.2%10.4%13.6%16.8%20.1%

40s Age Cohorts by Tract#18

Percentage of population aged 40 to 49 (%):
2.0%5.3%8.4%11.6%14.7%18.0%

50s Age Cohorts by Tract#19

Percentage of population aged 50 to 59 (%):
1.3%5.5%9.6%13.7%17.8%22.0%

60s Age Cohorts by Tract#20

Percentage of population aged 60 to 69 (%):
0.1%3.9%7.6%11.3%15.0%18.8%

70s Age Cohorts by Tract#21

Percentage of population aged 70 to 79 (%):
0.2%2.7%5.3%7.8%10.3%12.9%

80+ Age Cohorts by Tract#22

Percentage of population aged 80 and older (%):
0.0%1.9%3.8%5.7%7.7%9.6%
Road Data ©OpenStreetMap

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Map of Age Cohorts by Block Group in Boulder

Children Age Cohorts by Block Group#23

Percentage of population aged 0 to 17 (%):
0%7%13%20%27%34%

College Age Cohorts by Block Group#24

Percentage of population aged 18 to 21 (%):
0%19%39%58%77%97%

20s Age Cohorts by Block Group#25

Percentage of population aged 22 to 29 (%):
0%13%25%37%50%62%

30s Age Cohorts by Block Group#26

Percentage of population aged 30 to 39 (%):
0%6%12%18%23%30%

40s Age Cohorts by Block Group#27

Percentage of population aged 40 to 49 (%):
0%5%10%16%21%27%

50s Age Cohorts by Block Group#28

Percentage of population aged 50 to 59 (%):
0%6%13%19%26%33%

60s Age Cohorts by Block Group#29

Percentage of population aged 60 to 69 (%):
0%7%15%22%29%37%

70s Age Cohorts by Block Group#30

Percentage of population aged 70 to 79 (%):
0.0%4.6%9.3%13.9%18.6%23.3%

80+ Age Cohorts by Block Group#31

Percentage of population aged 80 and older (%):
0%5%11%16%21%27%
Road Data ©OpenStreetMap

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Age Cohorts by Neighborhood in Boulder

There are 66 neighborhoods that are fully or partially contained within Boulder (62 fully and 4 partially). This section compares the 50 most populous of those to each other, Boulder, and other entities that contain or substantially overlap with Boulder. The least populous of the compared neighborhoods has a population of 200.

Children by Neighborhood#32

Percentage of population aged 0 to 17 (%):
Scope: population of Boulder, selected neighborhoods in Boulder, and entities that contain Boulder
0%10%20%30%Count#Boulder Meadows NeighborhoodBoulder MdwsCrestview NeighborhoodCrestviewNorth Wonderland NeighborhoodN WonderlandCarolyn Heights NeighborhoodCarolyn HtsFour Mile Creek NeighborhoodFour Mile CrkMountainNorwood - Quince NeighborhoodNorwood - QuinceCentennial NeighborhoodCentennialOrchard Park NeighborhoodOrchard ParkMoores NeighborhoodMooresWestBuena Vista NeighborhoodBuena VistaSan Juan del Centro NeighborhoodSan Juan del CentroColoradoDevil's Thumb NeighborhoodDevil's ThumbUnited States of AmericaUnited StatesWonderland Hills NeighborhoodWonderland HlsJuniper - Kalmia NeighborhoodJuniper - KalmiaNewlands NeighborhoodNewlandsOld North Boulder NeighborhoodOld N BoulderCountry Meadows NeighborhoodCountry MdwsTable Mesa South NeighborhoodTable Mesa SEast Chautauqua NeighborhoodE ChautauquaBoulder Metro AreaBoulder AreaBoulder CountyBoulderShanahan Ridge NeighborhoodShanahan RdgEast Foothills NeighborhoodE FoothillsParkside NeighborhoodParksideHawthorn NeighborhoodHawthornHartford - Yale NeighborhoodHartford - YaleTable Mesa North NeighborhoodTable Mesa NMapleton Mobile Home Park NeighborhoodMapleton Mobile H…CU - East Campus NeighborhoodCU - E CampusKings Ridge NeighborhoodKings RidgeGunbarrel NeighborhoodGunbarrelMajestic Heights NeighborhoodMajestic HtsFrasier Meadows NeighborhoodFrasier MdwsKeewaydin East NeighborhoodKeewaydin EWinding Trail Village NeighborhoodWinding Trl VlgBoulderGrant NeighborhoodGrantPark East NeighborhoodPark EastHillcrest - Panorama Heights NeighborhoodHillcrest - Panora…Mapleton Hill NeighborhoodMapleton HillCatalpa Park NeighborhoodCatalpa ParkKeewaydin NeighborhoodKeewaydinTantra Park NeighborhoodTantra ParkMartin Acres NeighborhoodMartin AcresWhittier NeighborhoodWhittierFlatirons NeighborhoodFlatironsWest Pearl NeighborhoodWest PearlEast Aurora NeighborhoodEast AuroraColorado University NeighborhoodColorado UnivUniversity Hill NeighborhoodUniv HlUniversity Heights NeighborhoodUniv HtsGoss Grove NeighborhoodGoss GroveCU - Williams Village NeighborhoodCU - Williams Vlg32.821388%32.821388%32.8%502503126.706834%26.706834%26.7%184226.499552%26.499552%26.5%117118325.547445%25.547445%25.5%82425.069506%25.069506%25.1%230231524.709269%24.709269%24.7%5,732,5615.73M24.398915%24.398915%24.4%152624.293194%24.293194%24.3%4849723.901591%23.901591%23.9%143823.762883%23.762883%23.8%63923.760486%23.760486%23.8%17,834,66617.8M23.328380%23.328380%23.3%84851023.308958%23.308958%23.3%1401411123.252704%23.252704%23.3%1,246,1811.25M23.127406%23.127406%23.1%3341223.108006%23.108006%23.1%73,612,43873.6M22.661304%22.661304%22.7%2182191322.108844%22.108844%22.1%1181421.584530%21.584530%21.6%5371521.386433%21.386433%21.4%6826831621.349010%21.349010%21.3%1381391720.778285%20.778285%20.8%8438441820.346747%20.346747%20.3%2281920.164925%20.164925%20.2%63,31063.3k20.164925%20.164925%20.2%63,31063.3k19.303222%19.303222%19.3%2722018.899125%18.899125%18.9%6396402118.554630%18.554630%18.6%2852862218.064076%18.064076%18.1%40412317.492831%17.492831%17.5%42432517.492831%17.492831%17.5%3763772416.866667%16.866667%16.9%352616.822430%16.822430%16.8%83842716.683350%16.683350%16.7%2592816.395199%16.395199%16.4%1,5181,5192916.148195%16.148195%16.1%2582593015.783953%15.783953%15.8%5505513115.245099%15.245099%15.2%1641653213.880126%13.880126%13.9%843313.856914%13.856914%13.9%17,05817.1k13.808463%13.808463%13.8%1381393413.487099%13.487099%13.5%1913513.121387%13.121387%13.1%1033612.838014%12.838014%12.8%3623711.559633%11.559633%11.6%1403811.342828%11.342828%11.3%1451463910.473870%10.473870%10.5%115116409.294954%9.294954%9.3%390391418.844293%8.844293%8.8%411412428.636323%8.636323%8.6%140437.255549%7.255549%7.3%4647445.975116%5.975116%6.0%136137453.690083%3.690083%3.7%231232462.864120%2.864120%2.9%201202472.720000%2.720000%2.7%14481.683843%1.683843%1.7%31490.496689%0.496689%0.5%131450
Count number of children
# rank of neighborhood out of 50 by %

Age Cohorts by County Subdivision in the Boulder Area

There are 5 county subdivisions in the Boulder Area. This section compares Boulder to all of the county subdivisions in the Boulder Area and to those entities that contain or substantially overlap with Boulder.

Children by County Subdivision#41

Percentage of population aged 0 to 17 (%):
Scope: population of Boulder, selected other county subdivisions in the Boulder Area, and entities that contain Boulder
0%5%10%15%20%Count#Lafayette-LouisvilleLongmontMountainWestColoradoUnited States of AmericaUnited StatesBoulder Metro AreaBoulder AreaBoulder CountyBoulderBald MountainBoulderUpper St. Vrain24.863434%24.863434%24.9%17,84217.8k124.754275%24.754275%24.8%26,14226.1k224.709269%24.709269%24.7%5,732,5615.73M23.760486%23.760486%23.8%17,834,66617.8M23.252704%23.252704%23.3%1,246,1811.25M23.108006%23.108006%23.1%73,612,43873.6M20.164925%20.164925%20.2%63,31063.3k20.164925%20.164925%20.2%63,31063.3k17.429522%17.429522%17.4%2,201313.856914%13.856914%13.9%17,05817.1k47.736721%7.736721%7.7%675
Count number of children
# rank of county subdivision out of 5 by %

Age Cohorts by County Subdivision in Colorado

There are 209 county subdivisions in Colorado. This section compares Boulder to the 50 most populous county subdivisions in Colorado and to those entities that contain or substantially overlap with Boulder. The least populous of the compared county subdivisions has a population of 15,370.

Children by County Subdivision#50

Percentage of population aged 0 to 17 (%):
Scope: population of Boulder, selected other county subdivisions in Colorado, and entities that contain Boulder
0%10%20%30%Count#Commerce CityEast ArapahoeNorth AuroraBrightonFountainElsmereErie-FrederickWindsorSedaliaParkerTimnath-WellingtonBlack Forest-PeytonBlack Frst-PeytonCastle RockJohnstown-MillikenWest AdamsGreeleyPueblo WestFort MorganEagle-GypsumFruitaSouth AuroraLafayette-LouisvilleLongmontMountainAlamosaBroomfieldWestCliftonColoradoColorado SpringsColorado SpgsUnited States of AmericaUnited StatesGlenwood SpringsGlenwood SpgsPuebloElizabethLovelandMontroseSouth JeffersonS JeffersonCortezSouthwest ArapahoeSW ArapahoeGrand JunctionGrand JctMinturn-Red CliffCentral JeffersonCntrl JeffersonNortheast JeffersonNE JeffersonDenverBoulder Metro AreaBoulder AreaBoulder CountyBoulderSterlingDivideMonumentGoldenSteamboat SpringsSteamboat SpgsFort CollinsDurangoCañon CityBreckenridgeBoulder32.468104%32.468104%32.5%10,33210.3k131.298961%31.298961%31.3%9,549230.079897%30.079897%30.1%13,06413.1k329.937061%29.937061%29.9%27,01727.0k429.644546%29.644546%29.6%24,06924.1k529.564597%29.564597%29.6%19,90219.9k628.908388%28.908388%28.9%12,78312.8k728.846329%28.846329%28.8%6,341828.637179%28.637179%28.6%44,36344.4k928.595177%28.595177%28.6%32,68232.7k1028.490858%28.490858%28.5%6,2641128.188765%28.188765%28.2%20,80520.8k1226.572215%26.572215%26.6%11,96612.0k1326.544052%26.544052%26.5%7,9811426.345970%26.345970%26.3%80,44980.4k1526.160210%26.160210%26.2%34,65634.7k1625.995745%25.995745%26.0%7,9431725.741182%25.741182%25.7%4,2111825.572134%25.572134%25.6%4,8161925.537657%25.537657%25.5%6,0562025.535072%25.535072%25.5%98,09498.1k2124.863434%24.863434%24.9%17,84217.8k2224.754275%24.754275%24.8%26,14226.1k2324.709269%24.709269%24.7%5,732,5615.73M24.573845%24.573845%24.6%3,7772424.399110%24.399110%24.4%15,23715.2k2523.760486%23.760486%23.8%17,834,66617.8M23.441646%23.441646%23.4%6,8032623.252704%23.252704%23.3%1,246,1811.25M23.163415%23.163415%23.2%91,42691.4k2723.108006%23.108006%23.1%73,612,43873.6M23.002895%23.002895%23.0%5,8802822.938673%22.938673%22.9%26,19026.2k2922.871716%22.871716%22.9%5,0673022.470633%22.470633%22.5%23,72023.7k3122.166391%22.166391%22.2%6,9703222.145288%22.145288%22.1%5,6613321.987794%21.987794%22.0%3,7833421.575331%21.575331%21.6%43,79943.8k3521.399913%21.399913%21.4%18,66818.7k3621.289002%21.289002%21.3%5,5133721.217697%21.217697%21.2%5,3043820.944454%20.944454%20.9%98,64098.6k3920.705017%20.705017%20.7%137,337137k4020.164925%20.164925%20.2%63,31063.3k20.164925%20.164925%20.2%63,31063.3k20.064520%20.064520%20.1%3,4834119.371392%19.371392%19.4%3,9264219.349097%19.349097%19.3%3,8054319.000241%19.000241%19.0%7,0854418.968828%18.968828%19.0%3,3594518.783701%18.783701%18.8%31,90931.9k4618.037296%18.037296%18.0%5,9684716.756100%16.756100%16.8%4,9654815.285375%15.285375%15.3%2,5714913.856914%13.856914%13.9%17,05817.1k50
Count number of children
# rank of county subdivision out of 50 by %

Age Cohorts by County Subdivision in the West

There are 1,950 county subdivisions in the West. This section compares Boulder to the 50 most populous county subdivisions in the West and to those entities that contain or substantially overlap with Boulder. The least populous of the compared county subdivisions has a population of 323,012.

Children by County Subdivision#59

Percentage of population aged 0 to 17 (%):
Scope: population of Boulder, selected other county subdivisions in the West, and entities that contain Boulder
0%10%20%30%Count#BakersfieldVictorville-HesperiaSouth Gate-East Los AngelesS Gate-E Los Ang…San BernardinoChandlerFresnoStocktonSalt Lake CitySalt Lk CityModestoComptonRiversideSouth AuroraInglewoodDowney-NorwalkPhoenixMountainOntarioBoise CityAnaheim-Santa Ana-Garden GroveAnaheim-Santa An…Beaverton-HillsboroSacramentoLong Beach-LakewoodLong Bch-LakewoodLas VegasEwaWestOceanside-EscondidoOceanside-Escond…San MateoWhittierColoradoColorado SpringsColorado SpgsUnited States of AmericaUnited StatesAlbuquerqueSan JoseEast San Gabriel ValleyE San Gabriel VlyFremontUpper San Gabriel ValleyUpper San Gabriel …Seattle EastTacomaSpokaneHaywardSan DiegoCentral Contra CostaCntrl Contra CostaSan Fernando ValleySan Fernando VlyTucsonNortheast JeffersonNE JeffersonLos AngelesDenverOaklandBoulder Metro AreaBoulder AreaBoulder CountyBoulderNorth CoastPortland EastSouthwest San Gabriel ValleySW San Gabriel VlySeattleHonoluluBoulderSan Francisco30.255492%30.255492%30.3%124,377124k129.435174%29.435174%29.4%111,612112k229.165936%29.165936%29.2%146,441146k328.994345%28.994345%29.0%243,195243k428.984100%28.984100%29.0%121,788122k528.397448%28.397448%28.4%196,566197k628.302745%28.302745%28.3%99,59099.6k727.496527%27.496527%27.5%270,755271k827.298986%27.298986%27.3%88,17988.2k927.269923%27.269923%27.3%95,47895.5k1025.927237%25.927237%25.9%123,053123k1125.535072%25.535072%25.5%98,09498.1k1225.154719%25.154719%25.2%94,09594.1k1325.088958%25.088958%25.1%105,268105k1424.820142%24.820142%24.8%790,766791k1524.709269%24.709269%24.7%5,732,5615.73M24.651051%24.651051%24.7%158,701159k1624.573713%24.573713%24.6%83,11183.1k1724.485581%24.485581%24.5%415,583416k1824.260613%24.260613%24.3%104,522105k1924.105398%24.105398%24.1%270,060270k2024.003737%24.003737%24.0%138,756139k2123.974603%23.974603%24.0%448,315448k2223.870694%23.870694%23.9%81,44881.4k2323.760486%23.760486%23.8%17,834,66617.8M23.555887%23.555887%23.6%155,230155k2423.297112%23.297112%23.3%94,14294.1k2523.292335%23.292335%23.3%75,73275.7k2623.252704%23.252704%23.3%1,246,1811.25M23.163415%23.163415%23.2%91,42691.4k2723.108006%23.108006%23.1%73,612,43873.6M23.033158%23.033158%23.0%147,927148k2822.866327%22.866327%22.9%401,701402k2922.814001%22.814001%22.8%218,249218k3022.761568%22.761568%22.8%78,49678.5k3122.722312%22.722312%22.7%75,16775.2k3222.721955%22.721955%22.7%133,247133k3322.639000%22.639000%22.6%100,255100k3422.471811%22.471811%22.5%81,45281.5k3522.418273%22.418273%22.4%86,88086.9k3621.982996%21.982996%22.0%523,203523k3721.890089%21.890089%21.9%108,396108k3821.633042%21.633042%21.6%398,263398k3921.517750%21.517750%21.5%188,032188k4020.944454%20.944454%20.9%98,64098.6k4120.884750%20.884750%20.9%537,723538k4220.705017%20.705017%20.7%137,337137k4320.278714%20.278714%20.3%88,08188.1k4420.164925%20.164925%20.2%63,31063.3k20.164925%20.164925%20.2%63,31063.3k19.605378%19.605378%19.6%74,22474.2k4519.507968%19.507968%19.5%96,00396.0k4619.084224%19.084224%19.1%61,84361.8k4717.999155%17.999155%18.0%187,875188k4817.885770%17.885770%17.9%71,80671.8k4913.856914%13.856914%13.9%17,05817.1k13.481174%13.481174%13.5%114,628115k50
Count number of children
# rank of county subdivision out of 50 by %

Age Cohorts by County Subdivision in the United States

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

Children by County Subdivision#68

Percentage of population aged 0 to 17 (%):
Scope: population of Boulder, selected other county subdivisions in the United States, and entities that contain Boulder
0%10%20%Count#San BernardinoSouthwest DallasSW DallasNorthwest HarrisNW HarrisFresnoFort WorthSalt Lake CitySalt Lk CityNortheast TarrantNE TarrantHoustonMilwaukeeSan Antonio CentralSan Antonio CntrlEl PasoNortheast DallasNE DallasBronxPlanoTulsaDetroitPhoenixMountainOntarioTownship 1:Charlotte1, CharlotteAnaheim-Santa Ana-Garden GroveAnaheim-Santa An…SacramentoLong Beach-LakewoodLong Bch-LakewoodLas VegasWestOceanside-EscondidoOceanside-Escond…BrooklynColoradoUnited States of AmericaUnited StatesAlbuquerqueSan JoseEast San Gabriel ValleyE San Gabriel VlySeattle EastColumbusTown of HempsteadHempsteadOrlandoPhiladelphiaSan DiegoChicagoTampaAustinSan Fernando ValleySan Fernando VlyTucsonBaltimoreLos AngelesDenverQueensBoulder Metro AreaBoulder AreaBoulder CountyBoulderAtlantaMiamiSeattleWashingtonBostonManhattanBoulderSan 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%790,766791k1724.709269%24.709269%24.7%5,732,5615.73M24.651051%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%448,315448k2323.760486%23.760486%23.8%17,834,66617.8M23.555887%23.555887%23.6%155,230155k2423.337305%23.337305%23.3%608,369608k2523.252704%23.252704%23.3%1,246,1811.25M23.108006%23.108006%23.1%73,612,43873.6M23.033158%23.033158%23.0%147,927148k2622.866327%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%472,878473k4320.164925%20.164925%20.2%63,31063.3k20.164925%20.164925%20.2%63,31063.3k19.876571%19.876571%19.9%115,302115k4419.544858%19.544858%19.5%188,182188k4517.999155%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%239,355239k4913.856914%13.856914%13.9%17,05817.1k13.481174%13.481174%13.5%114,628115k50
Count number of children
# rank of county subdivision 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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State:
Colorado
County:
Boulder
Metro Area:
Boulder Area
Cities:
Boulder, Lafayette, Louisville
Town:
Superior
Unincorporated Places:
Eldorado Springs, Gunbarrel, Paragon Estates, Valmont
ZIP Codes:
80025, 80026, 80027, 80301, 80302, 80303, 80304, 80305, 80310, 80503
Unified School Districts:
Boulder Valley RE-2, St. Vrain Valley RE 1J
Neighborhoods:
Boulder Meadows, Buena Vista, CU - East Campus, CU - Williams Village, Carolyn Heights, Catalpa Park, Centennial, Chautauqua, Colorado University, Country Meadows, Crestview, Devil's Thumb, East Aurora, East Central, East Chautauqua, East Foothills, Flatirons, Foothills Community, Forest Glen, Four Mile Creek, Frasier Meadows, Githens Acres, Goss Grove, Grandview, Grant, Gunbarrel, Hartford - Yale, Hawthorn, Hillcrest - Panorama Heights, Hillside, Iris Hollow, Juniper - Kalmia, Keewaydin, Keewaydin East, Kings Ridge, Majestic Heights, Mapleton Hill, Mapleton Mobile Home Park, Martin Acres, Moores, Newlands, Noble Park, North Wonderland, Northbriar, Norwood - Quince, Old North Boulder, Orchard Park, Park East, Parkside, Pinon, Poplar, Sale Lake, San Juan del Centro, Shanahan Ridge, Table Mesa North, Table Mesa South, Tantra Park, Telluride, University Heights, University Hill, Wellman Creek, West Hawthorn, West Pearl, Whittier, Winding Trail Village, Wonderland Hills
Congressional District:
CO-2
State Senate Districts:
CO-16, CO-17, CO-18
State House Districts:
CO-10, CO-11, CO-12, CO-13, CO-33