Age and Sex in Middlesex County, Connecticut (County)

Age Structure#1

Percentage in each age cohort per year of age.1 Gray areas represent percentile bands from the counties in Connecticut.
Scope: population of Connecticut, Middlesex County, and other counties in Connecticut
Middlesex County
Connecticut
Percentile:
0th - 100th
10th - 90th
20th - 80th
30th - 70th
40th - 60th
0.0%0.5%1.0%1.5%Count%85+80-8475-7970-7467-6965-6662-6460-6155-5950-5445-4940-4435-3930-3425-2922-24212018-1915-1710-145-90-44,9242.994%2.99%3,4612.105%2.10%4,3122.622%2.62%6,9014.197%4.20%5,5373.367%3.37%3,9772.419%2.42%6,3173.842%3.84%5,0163.050%3.05%14,01514.0k8.523%8.52%14,16314.2k8.613%8.61%12,78312.8k7.774%7.77%11,18211.2k6.800%6.80%8,2525.018%5.02%8,9365.434%5.43%8,7435.317%5.32%5,4773.331%3.33%2,1721.321%1.32%2,2501.368%1.37%4,3812.664%2.66%6,3293.849%3.85%9,9886.074%6.07%8,1064.930%4.93%7,2164.388%4.39%

Age and Sex#2

Percentage in each age cohort per year of age.1
Scope: population of Connecticut and Middlesex County
Female Male
Connecticut
Middlesex County
Shaded bar tips show excess over facing bar.
0.5%0.0%0.5%Count%Senior2Older Adult3Younger Adult4College5Children6-0.216596%-0.058583%-0.184428%-0.060766%-0.275180%0.28%0.216596%0.184428%0.216596%0.22%29,11229.1k17.704%17.7%-0.752940%-0.038191%-0.683656%-0.043723%-0.791131%0.79%0.752940%0.683656%0.752940%0.75%63,47663.5k38.602%38.6%-0.518128%-0.601648%-0.518128%0.52%0.518128%0.024866%0.601648%0.012671%0.542994%0.54%31,40831.4k19.100%19.1%-0.660431%-0.017484%-0.712073%-0.677915%0.68%0.660431%0.712073%0.028730%0.660431%0.66%8,8035.353%5.35%-0.520899%-0.585394%-0.520899%0.52%0.520899%0.027129%0.585394%0.026922%0.548028%0.55%31,63931.6k19.241%19.2%

Detailed Age and Sex#3

Percentage in each age cohort per year of age.1
Scope: population of Connecticut and Middlesex County
Female Male
Connecticut
Middlesex County
Shaded bar tips show excess over facing bar.
0.5%0.0%0.5%Count%85+80-8475-7970-7467-6965-6662-6460-6155-5950-5445-4940-4435-3930-3425-2922-24212018-1915-1710-145-90-4-0.052565%-0.082022%-0.049811%-0.053515%-0.134587%0.13%0.052565%0.049811%0.052565%0.05%4,9242.994%2.99%-0.185359%-0.050232%-0.160599%-0.077557%-0.235590%0.24%0.185359%0.160599%0.185359%0.19%3,4612.105%2.10%-0.255415%-0.013622%-0.221436%-0.067576%-0.269038%0.27%0.255415%0.221436%0.255415%0.26%4,3122.622%2.62%-0.370109%-0.099126%-0.321850%-0.059857%-0.469235%0.47%0.370109%0.321850%0.370109%0.37%6,9014.197%4.20%-0.544684%-0.430664%-0.060238%-0.544684%0.54%0.544684%0.033042%0.430664%0.577725%0.58%5,5373.367%3.37%-0.584415%-0.040441%-0.515512%-0.062838%-0.624856%0.62%0.584415%0.515512%0.584415%0.58%3,9772.419%2.42%-0.630836%-0.018852%-0.564793%-0.050949%-0.649688%0.65%0.630836%0.564793%0.630836%0.63%6,3173.842%3.84%-0.704521%-0.116153%-0.636632%-0.066837%-0.820674%0.82%0.704521%0.636632%0.704521%0.70%5,0163.050%3.05%-0.847858%-0.008879%-0.719133%-0.031834%-0.856736%0.86%0.847858%0.719133%0.847858%0.85%14,01514.0k8.523%8.52%-0.839587%-0.043421%-0.764661%-0.045584%-0.883008%0.88%0.839587%0.764661%0.839587%0.84%14,16314.2k8.613%8.61%-0.757854%-0.039042%-0.712540%-0.042881%-0.796896%0.80%0.757854%0.712540%0.757854%0.76%12,78312.8k7.774%7.77%-0.659093%-0.041839%-0.628417%-0.041014%-0.700933%0.70%0.659093%0.628417%0.659093%0.66%11,18211.2k6.800%6.80%-0.495019%-0.569291%-0.013604%-0.495019%0.50%0.495019%0.013622%0.569291%0.508642%0.51%8,2525.018%5.02%-0.519466%-0.047921%-0.603884%-0.008064%-0.567387%0.57%0.519466%0.603884%0.519466%0.52%8,9365.434%5.43%-0.509493%-0.601242%-0.509493%0.51%0.509493%0.044394%0.601242%0.025392%0.553887%0.55%8,7435.317%5.32%-0.488938%-0.616411%-0.488938%0.49%0.488938%0.132370%0.616411%0.069824%0.621308%0.62%5,4773.331%3.33%-0.588064%-0.144735%-0.673137%-0.732799%0.73%0.588064%0.673137%0.052556%0.588064%0.59%2,1721.321%1.32%-0.676243%-0.015811%-0.712930%-0.692054%0.69%0.676243%0.712930%0.011202%0.676243%0.68%2,2501.368%1.37%-0.643404%-0.731113%-0.643404%0.64%0.643404%0.045306%0.731113%0.025581%0.688709%0.69%4,3812.664%2.66%-0.619889%-0.659186%-0.619889%0.62%0.619889%0.043177%0.659186%0.035372%0.663067%0.66%6,3293.849%3.85%-0.579915%-0.054975%-0.623413%-0.634890%0.63%0.579915%0.623413%0.026902%0.579915%0.58%9,9886.074%6.07%-0.439436%-0.572975%-0.439436%0.44%0.439436%0.107031%0.572975%0.027537%0.546467%0.55%8,1064.930%4.93%-0.428976%-0.515520%-0.428976%0.43%0.428976%0.019703%0.515520%0.021256%0.448680%0.45%7,2164.388%4.39%

Detailed Sex Ratio#4

Percentage more males or females in selected age cohorts.
Scope: population of Connecticut and Middlesex County
More Females More Males
Connecticut
Middlesex County
150%100%50%0%M:FFM85+80-8475-7970-7467-6965-6662-6460-6155-5950-5445-4940-4435-3930-3425-2922-24212018-1915-1710-145-90-4-156.037599%-107.437063%-156.037599%156.0%0.3910.3971.913%71.9%28.087%28.1%-27.099738%-48.292615%-27.099738%27.1%0.7870.7955.966%56.0%44.034%44.0%-5.333333%-30.516964%-5.333333%5.3%0.9490.9551.299%51.3%48.701%48.7%-26.782780%-18.597725%-26.782780%26.8%0.7890.7955.905%55.9%44.095%44.1%-13.987145%6.066245%6.066245%6.1%1.0611.0648.528%48.5%51.472%51.5%-6.919875%-12.189519%-6.919875%6.9%0.9350.9451.672%51.7%48.328%48.3%-2.988432%-9.020788%-2.988432%3.0%0.9710.9750.736%50.7%49.264%49.3%-16.486836%-10.498556%-16.486836%16.5%0.8580.8653.808%53.8%46.192%46.2%-1.047196%-4.426775%-1.047196%1.0%0.9900.9950.260%50.3%49.740%49.7%-5.171664%-5.961283%-5.171664%5.2%0.9510.9551.260%51.3%48.740%48.7%-5.151661%-6.017990%-5.151661%5.2%0.9510.9551.256%51.3%48.744%48.7%-6.348035%-6.526482%-6.348035%6.3%0.9400.9451.538%51.5%48.462%48.5%-2.389693%2.751843%2.751843%2.8%1.0281.0349.321%49.3%50.679%50.7%-9.225006%-1.335438%-9.225006%9.2%0.9160.9252.205%52.2%47.795%47.8%8.713297%4.223211%8.713297%8.7%1.0871.0947.913%47.9%52.087%52.1%27.072968%11.327436%27.072968%27.1%1.2711.2744.039%44.0%55.961%56.0%-24.612203%-24.612203%24.6%7.807584%0.8020.8055.479%55.5%44.521%44.5%-2.338129%-2.338129%2.3%1.571295%0.9770.9850.578%50.6%49.422%49.4%7.041588%3.498942%7.041588%7.0%1.0701.0748.299%48.3%51.701%51.7%6.965337%5.365950%6.965337%7.0%1.0701.0748.317%48.3%51.683%51.7%-9.479866%-9.479866%9.5%4.315293%0.9130.9152.263%52.3%47.737%47.7%24.356490%4.806046%24.356490%24.4%1.2441.2444.572%44.6%55.428%55.4%4.593139%4.123288%4.593139%4.6%1.0461.0548.877%48.9%51.123%51.1%

Map of Age Cohorts by County Subdivision in Middlesex County

Children Age Cohorts by County Subdivision#5

Percentage of population aged 0 to 17 (%):
13.3%15.0%16.7%18.3%20.0%21.7%

College Age Cohorts by County Subdivision#6

Percentage of population aged 18 to 21 (%):
1.9%3.6%5.2%6.9%8.5%10.2%

20s Age Cohorts by County Subdivision#7

Percentage of population aged 22 to 29 (%):
3.1%5.0%6.9%8.9%10.8%12.7%

30s Age Cohorts by County Subdivision#8

Percentage of population aged 30 to 39 (%):
4.1%5.9%7.7%9.5%11.3%13.1%

40s Age Cohorts by County Subdivision#9

Percentage of population aged 40 to 49 (%):
12.0%13.7%15.3%16.9%18.5%20.1%

50s Age Cohorts by County Subdivision#10

Percentage of population aged 50 to 59 (%):
15.5%16.9%18.1%19.4%20.7%22.0%

60s Age Cohorts by County Subdivision#11

Percentage of population aged 60 to 69 (%):
8.9%11.5%14.1%16.6%19.2%21.9%

70s Age Cohorts by County Subdivision#12

Percentage of population aged 70 to 79 (%):
4.1%5.7%7.2%8.7%10.3%11.8%

80+ Age Cohorts by County Subdivision#13

Percentage of population aged 80 and older (%):
3.3%4.6%5.8%7.0%8.2%9.5%
Road Data ©OpenStreetMap

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Map of Age Cohorts by Tract in Middlesex County

Children Age Cohorts by Tract#14

Percentage of population aged 0 to 17 (%):
4.4%8.7%13.0%17.2%21.4%25.7%

College Age Cohorts by Tract#15

Percentage of population aged 18 to 21 (%):
1%13%24%35%46%58%

20s Age Cohorts by Tract#16

Percentage of population aged 22 to 29 (%):
3.1%7.8%12.5%17.2%21.9%26.6%

30s Age Cohorts by Tract#17

Percentage of population aged 30 to 39 (%):
4.1%7.6%11.0%14.4%17.8%21.3%

40s Age Cohorts by Tract#18

Percentage of population aged 40 to 49 (%):
5.7%8.6%11.5%14.4%17.2%20.1%

50s Age Cohorts by Tract#19

Percentage of population aged 50 to 59 (%):
3.8%7.6%11.2%14.9%18.6%22.4%

60s Age Cohorts by Tract#20

Percentage of population aged 60 to 69 (%):
4.2%7.7%11.2%14.8%18.3%21.9%

70s Age Cohorts by Tract#21

Percentage of population aged 70 to 79 (%):
2.1%4.2%6.3%8.4%10.5%12.6%

80+ Age Cohorts by Tract#22

Percentage of population aged 80 and older (%):
0.0%2.5%5.0%7.5%10.0%12.5%
Road Data ©OpenStreetMap

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Map of Age Cohorts by Block Group in Middlesex County

Children Age Cohorts by Block Group#23

Percentage of population aged 0 to 17 (%):
0%7%14%21%29%36%

College Age Cohorts by Block Group#24

Percentage of population aged 18 to 21 (%):
0%12%23%35%47%59%

20s Age Cohorts by Block Group#25

Percentage of population aged 22 to 29 (%):
0%7%15%22%30%37%

30s Age Cohorts by Block Group#26

Percentage of population aged 30 to 39 (%):
0%6%11%17%22%28%

40s Age Cohorts by Block Group#27

Percentage of population aged 40 to 49 (%):
0%6%11%17%23%29%

50s Age Cohorts by Block Group#28

Percentage of population aged 50 to 59 (%):
3%11%19%27%35%43%

60s Age Cohorts by Block Group#29

Percentage of population aged 60 to 69 (%):
0%6%13%19%25%32%

70s Age Cohorts by Block Group#30

Percentage of population aged 70 to 79 (%):
0%7%13%20%26%33%

80+ Age Cohorts by Block Group#31

Percentage of population aged 80 and older (%):
0%6%11%17%23%29%
Road Data ©OpenStreetMap

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Age Cohorts by Place in Middlesex County

There are 15 places in Middlesex County. This section compares all 15 of those to each other, Middlesex County, and other entities that contain or substantially overlap with Middlesex County.

Children by Place#32

Percentage of population aged 0 to 17 (%):
Scope: population of Middlesex County, selected places in Middlesex County, and entities that contain Middlesex County
0%5%10%15%20%25%Count#Chester CenterChester CtrEast HamptonDeep River CenterDeep Riv CtrUnited States of AmericaUnited StatesDurhamConnecticutNortheastHartford, West Hartford, and East Hartford Metro AreaHartford AreaOld Saybrook CenterOld Saybrook CtrNew EnglandLake PocotopaugLk PocotopaugHigganumClintonMiddlesex CountyMiddlesexMiddletownPortlandMoodusSaybrook ManorSaybrook MnrEssex VillageWestbrook CenterWestbrook CtrFenwick26.435045%26.435045%26.4%525124.656517%24.656517%24.7%664224.084446%24.084446%24.1%559323.108006%23.108006%23.1%73,612,43873.6M21.994790%21.994790%22.0%591421.558782%21.558782%21.6%773,652774k21.341491%21.341491%21.3%11,965,27112.0M20.990885%20.990885%21.0%254,373254k20.874317%20.874317%20.9%382520.620396%20.620396%20.6%3,024,7813.02M20.204978%20.204978%20.2%690620.000000%20.000000%20.0%349719.667129%19.667129%19.7%709819.240686%19.240686%19.2%31,63931.6k17.774274%17.774274%17.8%8,342917.406813%17.406813%17.4%9761016.139767%16.139767%16.1%1941115.590947%15.590947%15.6%1861212.403803%12.403803%12.4%274138.840864%8.840864%8.8%180140.000000%0.000000%0.0%015

Age Cohorts by County Subdivision in Middlesex County

There are 16 county subdivisions in Middlesex County. This section compares all 16 of those to each other, Middlesex County, and other entities that contain or substantially overlap with Middlesex County.

Children by County Subdivision#41

Percentage of population aged 0 to 17 (%):
Scope: population of Middlesex County, selected county subdivisions in Middlesex County, and entities that contain Middlesex County
0%5%10%15%20%Count#United States of AmericaUnited StatesTown of East HamptonE HamptonConnecticutTown of Deep RiverDeep RivTown of East HaddamE HaddamNortheastTown of KillingworthKillingworthTown of DurhamDurhamHartford, West Hartford, and East Hartford Metro AreaHartford AreaNew EnglandTown of PortlandPortlandTown of Old SaybrookOld SaybrookTown of ClintonClintonTown of CromwellCromwellMiddlesex CountyMiddlesexTown of HaddamHaddamTown of MiddlefieldMiddlefieldTown of ChesterChesterTown of EssexTown of MiddletownMiddletownTown of WestbrookWestbrook23.108006%23.108006%23.1%73,612,43873.6M21.626029%21.626029%21.6%2,785121.558782%21.558782%21.6%773,652774k21.485062%21.485062%21.5%978221.444273%21.444273%21.4%1,951321.341491%21.341491%21.3%11,965,27112.0M21.055074%21.055074%21.1%1,361421.018847%21.018847%21.0%1,539520.990885%20.990885%21.0%254,373254k20.620396%20.620396%20.6%3,024,7813.02M20.544449%20.544449%20.5%1,932620.100256%20.100256%20.1%2,045719.981640%19.981640%20.0%2,612819.552993%19.552993%19.6%2,747919.240686%19.240686%19.2%31,63931.6k19.065398%19.065398%19.1%1,5831019.055190%19.055190%19.1%8391118.927739%18.927739%18.9%8121218.031544%18.031544%18.0%1,1891317.774274%17.774274%17.8%8,3421413.387424%13.387424%13.4%92415

Age Cohorts by County in the Hartford Area

There are 3 counties in the Hartford Area. This section compares Middlesex County to all of the counties in the Hartford Area and to those entities that contain or substantially overlap with Middlesex County.

Children by County#50

Percentage of population aged 0 to 17 (%):
Scope: population of Middlesex County, selected other counties in the Hartford Area, and entities that contain Middlesex County
0%5%10%15%20%Count#United States of AmericaUnited StatesHartford CountyHartfordConnecticutNortheastHartford, West Hartford, and East Hartford Metro AreaHartford AreaNew EnglandMiddlesex CountyMiddlesexTolland CountyTolland23.108006%23.108006%23.1%73,612,43873.6M21.724374%21.724374%21.7%194,585195k121.558782%21.558782%21.6%773,652774k21.341491%21.341491%21.3%11,965,27112.0M20.990885%20.990885%21.0%254,373254k20.620396%20.620396%20.6%3,024,7813.02M19.240686%19.240686%19.2%31,63931.6k218.557048%18.557048%18.6%28,14928.1k3

Age Cohorts by County in Connecticut

There are 8 counties in Connecticut. This section compares Middlesex County to all of the counties in Connecticut and to those entities that contain or substantially overlap with Middlesex County.

Children by County#59

Percentage of population aged 0 to 17 (%):
Scope: population of Middlesex County, selected other counties in Connecticut, and entities that contain Middlesex County
0%5%10%15%20%Count#Fairfield CountyFairfieldUnited States of AmericaUnited StatesHartford CountyHartfordConnecticutNortheastNew Haven CountyNew HavenHartford, West Hartford, and East Hartford Metro AreaHartford AreaWindham CountyWindhamNew EnglandNew London CountyNew LondonLitchfield CountyLitchfieldMiddlesex CountyMiddlesexTolland CountyTolland23.577077%23.577077%23.6%222,006222k123.108006%23.108006%23.1%73,612,43873.6M21.724374%21.724374%21.7%194,585195k221.558782%21.558782%21.6%773,652774k21.341491%21.341491%21.3%11,965,27112.0M21.104715%21.104715%21.1%181,685182k320.990885%20.990885%21.0%254,373254k20.727208%20.727208%20.7%24,26724.3k420.620396%20.620396%20.6%3,024,7813.02M20.307463%20.307463%20.3%55,24355.2k519.486770%19.486770%19.5%36,07836.1k619.240686%19.240686%19.2%31,63931.6k718.557048%18.557048%18.6%28,14928.1k8

Age Cohorts by County in the United States

There are 3,142 counties in the United States. This section compares Middlesex County to the 50 most populous counties in the United States and to those entities that contain or substantially overlap with Middlesex 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 Middlesex County, selected other counties in the United States, and entities that contain Middlesex County
0%5%10%15%20%25%Count#Fresno CountyFresnoSalt Lake CountySalt LakeSan Bernardino CountySan BernardinoHarris CountyHarrisTarrant CountyTarrantDallas CountyDallasRiverside CountyRiversideBexar CountyBexarBronx CountyBronxMaricopa CountyMaricopaWake CountyWakeMecklenburg CountyMecklenburgMilwaukee CountyMilwaukeeSacramento CountySacramentoWayne CountyWayneFairfax CountyFairfaxClark CountyClarkFranklin 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 CountyOaklandPima CountyPimaHonolulu CountyHonoluluBroward CountyBrowardCuyahoga CountyCuyahogaConnecticutAlameda CountyAlamedaNortheastHartford, West Hartford, and East Hartford Metro AreaHartford AreaKing CountyKingNew EnglandMiami-Dade CountyMiami-DadeMiddlesex CountyMiddlesexQueens CountyQueensPalm Beach CountyPalm BeachMiddlesex CountyMiddlesexAllegheny 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%493,981494k1723.668593%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%273,247273k3821.856045%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%271,499271k4221.558782%21.558782%21.6%773,652774k21.443331%21.443331%21.4%344,212344k4321.341491%21.341491%21.3%11,965,27112.0M20.990885%20.990885%21.0%254,373254k20.896492%20.896492%20.9%434,553435k4420.620396%20.620396%20.6%3,024,7813.02M20.604500%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%274,730275k4819.240686%19.240686%19.2%31,63931.6k19.092867%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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