Age and Sex in Mercer County, New Jersey (County)

Age Structure#1

Percentage in each age cohort per year of age.1 Gray areas represent percentile bands from the counties in New Jersey.
Scope: population of New Jersey, Mercer County, and other counties in New Jersey
Mercer County
New Jersey
Percentile:
0th - 100th
10th - 90th
20th - 80th
30th - 70th
40th - 60th
0.0%0.5%1.0%1.5%Count%85+80-8475-7970-7467-6965-6662-6460-6155-5950-5445-4940-4435-3930-3425-2922-24212018-1915-1710-145-90-47,7212.081%2.08%6,7831.828%1.83%8,5172.295%2.30%10,91510.9k2.941%2.94%9,3252.513%2.51%7,6802.070%2.07%13,07613.1k3.524%3.52%9,2702.498%2.50%24,49624.5k6.601%6.60%27,54727.5k7.423%7.42%26,72926.7k7.203%7.20%26,53326.5k7.150%7.15%22,38022.4k6.031%6.03%23,41123.4k6.309%6.31%23,49623.5k6.331%6.33%16,14416.1k4.350%4.35%6,3271.705%1.70%6,7341.815%1.81%13,33513.3k3.593%3.59%14,40014.4k3.880%3.88%23,48923.5k6.330%6.33%21,56121.6k5.810%5.81%21,23221.2k5.721%5.72%

Age and Sex#2

Percentage in each age cohort per year of age.1
Scope: population of New Jersey and Mercer County
Female Male
New Jersey
Mercer County
Shaded bar tips show excess over facing bar.
0.5%0.0%0.5%Count%Senior2Older Adult3Younger Adult4College5Children6-0.160476%-0.060353%-0.173758%-0.061354%-0.220829%0.22%0.160476%0.173758%0.160476%0.16%50,94150.9k13.727%13.7%-0.674339%-0.027238%-0.672745%-0.039533%-0.701577%0.70%0.674339%0.672745%0.674339%0.67%127,651128k34.398%34.4%-0.630406%-0.636534%-0.630406%0.63%0.630406%0.018129%0.636534%0.007161%0.648536%0.65%85,43185.4k23.021%23.0%-0.887427%-0.609167%-0.887427%0.89%0.887427%0.003368%0.609167%0.048677%0.890795%0.89%26,39626.4k7.113%7.11%-0.592606%-0.613175%-0.592606%0.59%0.592606%0.022635%0.613175%0.026039%0.615241%0.62%80,68280.7k21.741%21.7%

Detailed Age and Sex#3

Percentage in each age cohort per year of age.1
Scope: population of New Jersey and Mercer County
Female Male
New Jersey
Mercer County
Shaded bar tips show excess over facing bar.
0.5%0.0%0.5%Count%85+80-8475-7970-7467-6965-6662-6460-6155-5950-5445-4940-4435-3930-3425-2922-24212018-1915-1710-145-90-4-0.036244%-0.057548%-0.044621%-0.047599%-0.093792%0.09%0.036244%0.044621%0.036244%0.04%7,7212.081%2.08%-0.146753%-0.072056%-0.153432%-0.079505%-0.218808%0.22%0.146753%0.153432%0.146753%0.15%6,7831.828%1.83%-0.206521%-0.045971%-0.210634%-0.069221%-0.252492%0.25%0.206521%0.210634%0.206521%0.21%8,5172.295%2.30%-0.261384%-0.065481%-0.305317%-0.073511%-0.326865%0.33%0.261384%0.305317%0.261384%0.26%10,91510.9k2.941%2.94%-0.370699%-0.096200%-0.408452%-0.062121%-0.466899%0.47%0.370699%0.408452%0.370699%0.37%9,3252.513%2.51%-0.505927%-0.022905%-0.484535%-0.074803%-0.528832%0.53%0.505927%0.484535%0.505927%0.51%7,6802.070%2.07%-0.556991%-0.060541%-0.528472%-0.065340%-0.617532%0.62%0.556991%0.528472%0.556991%0.56%13,07613.1k3.524%3.52%-0.542575%-0.163837%-0.601713%-0.058371%-0.706411%0.71%0.542575%0.601713%0.542575%0.54%9,2702.498%2.50%-0.658742%-0.002695%-0.680461%-0.041934%-0.661437%0.66%0.658742%0.680461%0.658742%0.66%24,49624.5k6.601%6.60%-0.726702%-0.031204%-0.745954%-0.037813%-0.757907%0.76%0.726702%0.745954%0.726702%0.73%27,54727.5k7.423%7.42%-0.709564%-0.021396%-0.711454%-0.036698%-0.730960%0.73%0.709564%0.711454%0.709564%0.71%26,72926.7k7.203%7.20%-0.704498%-0.668085%-0.018666%-0.704498%0.70%0.704498%0.020965%0.668085%0.725463%0.73%26,53326.5k7.150%7.15%-0.590028%-0.026085%-0.626377%-0.017089%-0.616113%0.62%0.590028%0.626377%0.590028%0.59%22,38022.4k6.031%6.03%-0.619346%-0.646558%-0.002140%-0.619346%0.62%0.619346%0.023013%0.646558%0.642359%0.64%23,41123.4k6.309%6.31%-0.601292%-0.626537%-0.601292%0.60%0.601292%0.063702%0.626537%0.025109%0.664994%0.66%23,49623.5k6.331%6.33%-0.721187%-0.621367%-0.721187%0.72%0.721187%0.007725%0.621367%0.033167%0.728912%0.73%16,14416.1k4.350%4.35%-0.795471%-0.604804%-0.795471%0.80%0.795471%0.113985%0.604804%0.070933%0.909456%0.91%6,3271.705%1.70%-0.905683%-0.003234%-0.627573%-0.908917%0.91%0.905683%0.627573%0.031664%0.905683%0.91%6,7341.815%1.81%-0.874021%-0.048639%-0.602145%-0.922660%0.92%0.874021%0.602145%0.046055%0.874021%0.87%13,33513.3k3.593%3.59%-0.641514%-0.649924%-0.641514%0.64%0.641514%0.010419%0.649924%0.032345%0.651934%0.65%14,40014.4k3.880%3.88%-0.602909%-0.629146%-0.602909%0.60%0.602909%0.060091%0.629146%0.030177%0.663000%0.66%23,48923.5k6.330%6.33%-0.579034%-0.003934%-0.607365%-0.582968%0.58%0.579034%0.607365%0.020488%0.579034%0.58%21,56121.6k5.810%5.81%-0.562596%-0.580966%-0.562596%0.56%0.562596%0.019078%0.580966%0.023669%0.581675%0.58%21,23221.2k5.721%5.72%

Detailed Sex Ratio#4

Percentage more males or females in selected age cohorts.
Scope: population of New Jersey and Mercer County
More Females More Males
New Jersey
Mercer County
150%100%50%0%M:FFM85+80-8475-7970-7467-6965-6662-6460-6155-5950-5445-4940-4435-3930-3425-2922-24212018-1915-1710-145-90-4-158.782528%-106.675570%-158.782528%158.8%0.3860.3972.128%72.1%27.872%27.9%-49.100257%-51.817358%-49.100257%49.1%0.6710.6759.856%59.9%40.144%40.1%-22.259916%-32.863305%-22.259916%22.3%0.8180.8255.008%55.0%44.992%45.0%-25.051546%-24.076795%-25.051546%25.1%0.8000.8055.566%55.6%44.434%44.4%-25.951054%-15.208795%-25.951054%26.0%0.7940.7955.743%55.7%44.257%44.3%-4.527297%-15.438036%-4.527297%4.5%0.9570.9651.107%51.1%48.893%48.9%-10.869215%-12.363899%-10.869215%10.9%0.9020.9052.577%52.6%47.423%47.4%-30.196176%-9.700720%-30.196176%30.2%0.7680.7756.559%56.6%43.441%43.4%-0.409065%-6.162575%-0.409065%0.4%0.9961.0050.102%50.1%49.898%49.9%-4.293978%-5.069077%-4.293978%4.3%0.9590.9651.051%51.1%48.949%48.9%-3.015343%-5.158176%-3.015343%3.0%0.9710.9750.743%50.7%49.257%49.3%-2.794026%2.975826%2.975826%3.0%1.0301.0349.267%49.3%50.733%50.7%-4.420899%-2.728295%-4.420899%4.4%0.9580.9651.081%51.1%48.919%48.9%-0.330999%3.715628%3.715628%3.7%1.0371.0449.088%49.1%50.912%50.9%10.594246%4.007619%10.594246%10.6%1.1061.1147.485%47.5%52.515%52.5%1.071117%5.337770%1.071117%1.1%1.0111.0149.734%49.7%50.266%50.3%14.329268%11.728269%14.329268%14.3%1.1431.1446.657%46.7%53.343%53.3%-0.357037%-0.357037%0.4%5.045486%0.9961.0050.089%50.1%49.911%49.9%-5.564976%-5.564976%5.6%7.648461%0.9470.9551.354%51.4%48.646%48.6%1.624195%4.976673%1.624195%1.6%1.0161.0249.597%49.6%50.403%50.4%9.966926%4.796474%9.966926%10.0%1.1001.1047.627%47.6%52.373%52.4%-0.679449%-0.679449%0.7%3.373260%0.9930.9950.169%50.2%49.831%49.8%3.391129%4.074076%3.391129%3.4%1.0341.0349.166%49.2%50.834%50.8%

Map of Age Cohorts by County Subdivision in Mercer County

Children Age Cohorts by County Subdivision#5

Percentage of population aged 0 to 17 (%):
15.9%18.2%20.4%22.6%24.8%27.1%

College Age Cohorts by County Subdivision#6

Percentage of population aged 18 to 21 (%):
2.9%5.7%8.4%11.1%13.8%16.6%

20s Age Cohorts by County Subdivision#7

Percentage of population aged 22 to 29 (%):
6.4%8.4%10.3%12.2%14.1%16.1%

30s Age Cohorts by County Subdivision#8

Percentage of population aged 30 to 39 (%):
6.9%9.1%11.2%13.3%15.4%17.6%

40s Age Cohorts by County Subdivision#9

Percentage of population aged 40 to 49 (%):
10.2%12.6%15.1%17.5%19.9%22.4%

50s Age Cohorts by County Subdivision#10

Percentage of population aged 50 to 59 (%):
9.6%11.2%12.7%14.2%15.7%17.3%

60s Age Cohorts by County Subdivision#11

Percentage of population aged 60 to 69 (%):
6.8%8.6%10.3%12.0%13.6%15.4%

70s Age Cohorts by County Subdivision#12

Percentage of population aged 70 to 79 (%):
3.2%4.0%4.7%5.5%6.2%6.9%

80+ Age Cohorts by County Subdivision#13

Percentage of population aged 80 and older (%):
2.2%3.3%4.3%5.3%6.4%7.5%
Road Data ©OpenStreetMap

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Map of Age Cohorts by Tract in Mercer County

Children Age Cohorts by Tract#14

Percentage of population aged 0 to 17 (%):
0%7%14%22%29%36%

College Age Cohorts by Tract#15

Percentage of population aged 18 to 21 (%):
2%14%27%39%51%64%

20s Age Cohorts by Tract#16

Percentage of population aged 22 to 29 (%):
4.1%8.6%13.0%17.5%21.9%26.4%

30s Age Cohorts by Tract#17

Percentage of population aged 30 to 39 (%):
3.1%7.6%12.2%16.7%21.2%25.8%

40s Age Cohorts by Tract#18

Percentage of population aged 40 to 49 (%):
3.8%8.6%13.3%18.0%22.7%27.4%

50s Age Cohorts by Tract#19

Percentage of population aged 50 to 59 (%):
3.9%7.8%11.7%15.6%19.4%23.4%

60s Age Cohorts by Tract#20

Percentage of population aged 60 to 69 (%):
2.6%5.9%9.2%12.4%15.7%19.0%

70s Age Cohorts by Tract#21

Percentage of population aged 70 to 79 (%):
1.1%3.6%5.9%8.3%10.7%13.2%

80+ Age Cohorts by Tract#22

Percentage of population aged 80 and older (%):
0.0%2.4%4.9%7.3%9.8%12.3%
Road Data ©OpenStreetMap

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Map of Age Cohorts by Block Group in Mercer County

Children Age Cohorts by Block Group#23

Percentage of population aged 0 to 17 (%):
0%9%19%28%38%48%

College Age Cohorts by Block Group#24

Percentage of population aged 18 to 21 (%):
0%17%34%51%68%86%

20s Age Cohorts by Block Group#25

Percentage of population aged 22 to 29 (%):
0%10%20%30%40%51%

30s Age Cohorts by Block Group#26

Percentage of population aged 30 to 39 (%):
0%6%12%18%25%31%

40s Age Cohorts by Block Group#27

Percentage of population aged 40 to 49 (%):
0%7%14%21%27%35%

50s Age Cohorts by Block Group#28

Percentage of population aged 50 to 59 (%):
0%7%15%22%30%38%

60s Age Cohorts by Block Group#29

Percentage of population aged 60 to 69 (%):
0%8%17%25%33%42%

70s Age Cohorts by Block Group#30

Percentage of population aged 70 to 79 (%):
0%8%15%22%30%38%

80+ Age Cohorts by Block Group#31

Percentage of population aged 80 and older (%):
0.0%4.9%9.9%14.8%19.8%24.8%
Road Data ©OpenStreetMap

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Age Cohorts by Place in Mercer County

There are 14 places in Mercer County. This section compares all 14 of those to each other, Mercer County, and other entities that contain or substantially overlap with Mercer County.

Children by Place#32

Percentage of population aged 0 to 17 (%):
Scope: population of Mercer County, selected places in Mercer County, and entities that contain Mercer County
0%5%10%15%20%25%Count#TrentonTwin RiversHightstownRobbinsvilleHopewellPrinceton JunctionPrinceton JctUnited States of AmericaUnited StatesNew JerseyPenningtonTrenton Metro AreaTrenton AreaMercer CountyMercerMiddle AtlanticNortheastHamilton SquareHamilton SqMercervilleGrovevillePrincetonYardvilleLawrencevilleWhite Horse25.102000%25.102000%25.1%21,22621.2k124.296275%24.296275%24.3%1,709224.240781%24.240781%24.2%1,341324.149353%24.149353%24.1%802423.739496%23.739496%23.7%452523.491810%23.491810%23.5%588623.108006%23.108006%23.1%73,612,43873.6M22.543020%22.543020%22.5%2,009,8132.01M22.165952%22.165952%22.2%569721.741251%21.741251%21.7%80,68280.7k21.741251%21.741251%21.7%80,68280.7k21.597009%21.597009%21.6%8,940,4908.94M21.341491%21.341491%21.3%11,965,27112.0M20.075386%20.075386%20.1%2,663819.942977%19.942977%19.9%2,658918.619247%18.619247%18.6%4451017.916335%17.916335%17.9%5,4051115.908773%15.908773%15.9%1,1371215.840622%15.840622%15.8%6521315.622809%15.622809%15.6%1,33714

Age Cohorts by County Subdivision in Mercer County

There are 12 county subdivisions in Mercer County. This section compares all 12 of those to each other, Mercer County, and other entities that contain or substantially overlap with Mercer County.

Children by County Subdivision#41

Percentage of population aged 0 to 17 (%):
Scope: population of Mercer County, selected county subdivisions in Mercer County, and entities that contain Mercer County
0%5%10%15%20%25%Count#West Windsor TownshipW WindsorRobbinsville TownshipRobbinsvilleTrentonEast Windsor TownshipE WindsorHightstownHopewellUnited States of AmericaUnited StatesHopewell TownshipHopewellNew JerseyPenningtonTrenton Metro AreaTrenton AreaMercer CountyMercerMiddle AtlanticNortheastHamilton TownshipHamiltonLawrence TownshipLawrencePrincetonEwing TownshipEwing27.033014%27.033014%27.0%7,566125.724407%25.724407%25.7%3,631225.102000%25.102000%25.1%21,22621.2k324.602626%24.602626%24.6%6,764424.240781%24.240781%24.2%1,341523.739496%23.739496%23.7%452623.108006%23.108006%23.1%73,612,43873.6M22.798265%22.798265%22.8%4,204722.543020%22.543020%22.5%2,009,8132.01M22.165952%22.165952%22.2%569821.741251%21.741251%21.7%80,68280.7k21.741251%21.741251%21.7%80,68280.7k21.597009%21.597009%21.6%8,940,4908.94M21.341491%21.341491%21.3%11,965,27112.0M19.462113%19.462113%19.5%17,28817.3k919.384162%19.384162%19.4%6,4401017.916335%17.916335%17.9%5,4051115.974423%15.974423%16.0%5,79612

Age Cohorts by County in New Jersey

There are 21 counties in New Jersey. This section compares Mercer County to all of the counties in New Jersey and to those entities that contain or substantially overlap with Mercer County.

Children by County#50

Percentage of population aged 0 to 17 (%):
Scope: population of Mercer County, selected other counties in New Jersey, and entities that contain Mercer County
0%5%10%15%20%Count#Passaic CountyPassaicEssex CountyEssexUnion CountyUnionCumberland CountyCumberlandOcean CountyOceanCamden CountyCamdenSomerset CountySomersetUnited States of AmericaUnited StatesGloucester CountyGloucesterNew JerseyMorris CountyMorrisMonmouth CountyMonmouthSalem CountySalemAtlantic CountyAtlanticMiddlesex CountyMiddlesexBergen CountyBergenTrenton Metro AreaTrenton AreaMercer CountyMercerBurlington CountyBurlingtonMiddle AtlanticSussex CountySussexWarren CountyWarrenNortheastHunterdon CountyHunterdonHudson CountyHudsonCape May CountyCape May24.331236%24.331236%24.3%123,409123k124.091140%24.091140%24.1%190,943191k223.832380%23.832380%23.8%131,182131k323.773629%23.773629%23.8%37,02637.0k423.530195%23.530195%23.5%137,926138k523.296325%23.296325%23.3%119,078119k623.242163%23.242163%23.2%77,09177.1k723.108006%23.108006%23.1%73,612,43873.6M23.000419%23.000419%23.0%66,99767.0k822.543020%22.543020%22.5%2,009,8132.01M22.301416%22.301416%22.3%111,109111k922.286513%22.286513%22.3%139,855140k1022.280789%22.280789%22.3%14,37214.4k1122.134761%22.134761%22.1%60,65560.7k1222.127854%22.127854%22.1%184,071184k1321.766185%21.766185%21.8%202,493202k1421.741251%21.741251%21.7%80,68280.7k21.741251%21.741251%21.7%80,68280.7k1521.709281%21.709281%21.7%97,74397.7k1621.597009%21.597009%21.6%8,940,4908.94M21.478430%21.478430%21.5%31,07831.1k1721.379149%21.379149%21.4%22,89622.9k1821.341491%21.341491%21.3%11,965,27112.0M21.032074%21.032074%21.0%26,43926.4k1920.589626%20.589626%20.6%137,647138k2017.945788%17.945788%17.9%17,12117.1k21

Age Cohorts by County in the United States

There are 3,142 counties in the United States. This section compares Mercer County to the 50 most populous counties in the United States and to those entities that contain or substantially overlap with Mercer County. The least populous of the compared counties has a population of 941,618.

Children by County#59

Percentage of population aged 0 to 17 (%):
Scope: population of Mercer County, selected other counties in the United States, and entities that contain Mercer 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 CountyCookNew JerseySt. Louis CountySt. LouisSan Diego CountySan DiegoSuffolk CountySuffolkHennepin CountyHennepinPhiladelphia CountyPhiladelphiaNassau CountyNassauOakland CountyOaklandPima CountyPimaTrenton Metro AreaTrenton AreaMercer CountyMercerHonolulu CountyHonoluluBroward CountyBrowardMiddle AtlanticCuyahoga CountyCuyahogaAlameda CountyAlamedaNortheastKing 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%493,981494k1723.668593%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%1,186,3981.19M3122.543020%22.543020%22.5%2,009,8132.01M22.432138%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%219,290219k3921.741251%21.741251%21.7%80,68280.7k21.741251%21.741251%21.7%80,68280.7k21.601744%21.601744%21.6%213,209213k4021.598472%21.598472%21.6%402,548403k4121.597009%21.597009%21.6%8,940,4908.94M21.569623%21.569623%21.6%271,499271k4221.443331%21.443331%21.4%344,212344k4321.341491%21.341491%21.3%11,965,27112.0M20.896492%20.896492%20.9%434,553435k4420.604500%20.604500%20.6%548,990549k4520.568254%20.568254%20.6%322,430322k4620.470812%20.470812%20.5%472,878473k4719.641010%19.641010%19.6%274,730275k4819.092867%19.092867%19.1%234,911235k4914.639548%14.639548%14.6%239,355239k50

Definitions

The US Census reports extensively on the topics of age and sex, often reporting other topics broken down by age and sex cohorts. This page reports on age and sex alone; charts presenting other topics by age and sex can be found on their topic-specific pages.

  • Children: less than 18 years old
  • College: from 18 to 21 years old
  • 20s: from 22 to 29 years old, to not overlap the college category
  • Younger Adult: from 22 to 39 years old
  • Older Adult: from 40 to 64 years old
  • Senior: more than 64 years old

For additional information about the data presented on this site, including our sources, please see the About Page.

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