Age and Sex in Alameda County, California (County)

Age Structure#1

Percentage in each age cohort per year of age.1 Gray areas represent percentile bands from the counties in California.
Scope: population of California, Alameda County, and other counties in California
Alameda County
California
Percentile:
0th - 100th
10th - 90th
20th - 80th
30th - 70th
40th - 60th
0.0%0.5%1.0%1.5%Count%85+80-8475-7970-7467-6965-6662-6460-6155-5950-5445-4940-4435-3930-3425-2922-24212018-1915-1710-145-90-427,51327.5k1.714%1.71%24,86124.9k1.549%1.55%31,96432.0k1.991%1.99%46,27046.3k2.882%2.88%38,05238.1k2.371%2.37%31,03931.0k1.934%1.93%51,60351.6k3.215%3.21%37,35837.4k2.327%2.33%104,823105k6.530%6.53%112,863113k7.031%7.03%112,263112k6.994%6.99%120,054120k7.479%7.48%117,793118k7.338%7.34%129,267129k8.053%8.05%127,556128k7.946%7.95%66,90666.9k4.168%4.17%21,24121.2k1.323%1.32%19,72819.7k1.229%1.23%39,85139.9k2.483%2.48%55,19655.2k3.439%3.44%94,14994.1k5.865%5.87%97,29597.3k6.061%6.06%97,57297.6k6.078%6.08%
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 California and Alameda County
Female Male
California
Alameda County
Shaded bar tips show excess over facing bar.
0.5%0.0%0.5%Count%Senior2Older Adult3Younger Adult4College5Children6-0.150239%-0.045094%-0.157885%-0.041886%-0.195334%0.20%0.150239%0.157885%0.150239%0.15%199,699200k12.441%12.4%-0.661306%-0.020418%-0.628107%-0.017115%-0.681725%0.68%0.661306%0.628107%0.661306%0.66%538,964539k33.576%33.6%-0.756454%-0.015173%-0.701647%-0.771626%0.77%0.756454%0.701647%0.031578%0.756454%0.76%441,522442k27.505%27.5%-0.625647%-0.007413%-0.701652%-0.633061%0.63%0.625647%0.701652%0.050982%0.625647%0.63%80,82080.8k5.035%5.03%-0.582919%-0.642652%-0.582919%0.58%0.582919%0.025459%0.642652%0.028379%0.608377%0.61%344,212344k21.443%21.4%
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 California and Alameda County
Female Male
California
Alameda County
Shaded bar tips show excess over facing bar.
0.5%0.0%0.5%Count%85+80-8475-7970-7467-6965-6662-6460-6155-5950-5445-4940-4435-3930-3425-2922-24212018-1915-1710-145-90-4-0.037183%-0.032756%-0.039047%-0.031647%-0.069940%0.07%0.037183%0.039047%0.037183%0.04%27,51327.5k1.714%1.71%-0.127796%-0.054161%-0.138544%-0.050257%-0.181957%0.18%0.127796%0.138544%0.127796%0.13%24,86124.9k1.549%1.55%-0.171603%-0.055046%-0.194002%-0.048276%-0.226648%0.23%0.171603%0.194002%0.171603%0.17%31,96432.0k1.991%1.99%-0.257548%-0.061400%-0.278404%-0.047771%-0.318948%0.32%0.257548%0.278404%0.257548%0.26%46,27046.3k2.882%2.88%-0.373304%-0.043566%-0.369729%-0.052880%-0.416870%0.42%0.373304%0.369729%0.373304%0.37%38,05238.1k2.371%2.37%-0.454518%-0.057780%-0.447596%-0.055693%-0.512298%0.51%0.454518%0.447596%0.454518%0.45%31,03931.0k1.934%1.93%-0.498167%-0.075234%-0.489719%-0.047683%-0.573401%0.57%0.498167%0.489719%0.498167%0.50%51,60351.6k3.215%3.21%-0.564441%-0.034762%-0.556695%-0.041019%-0.599202%0.60%0.564441%0.556695%0.564441%0.56%37,35837.4k2.327%2.33%-0.637359%-0.031310%-0.610297%-0.030760%-0.668670%0.67%0.637359%0.610297%0.637359%0.64%104,823105k6.530%6.53%-0.689988%-0.026227%-0.672672%-0.012121%-0.716215%0.72%0.689988%0.672672%0.689988%0.69%112,863113k7.031%7.03%-0.696454%-0.005819%-0.669774%-0.702273%0.70%0.696454%0.669774%0.001370%0.696454%0.70%112,263112k6.994%6.99%-0.737744%-0.668957%-0.737744%0.74%0.737744%0.020309%0.668957%0.000957%0.758053%0.76%120,054120k7.479%7.48%-0.710770%-0.046087%-0.661266%-0.756857%0.76%0.710770%0.661266%0.007922%0.710770%0.71%117,793118k7.338%7.34%-0.794522%-0.021542%-0.705425%-0.816064%0.82%0.794522%0.705425%0.028957%0.794522%0.79%129,267129k8.053%8.05%-0.792042%-0.005183%-0.730940%-0.797226%0.80%0.792042%0.730940%0.048142%0.792042%0.79%127,556128k7.946%7.95%-0.679514%-0.713830%-0.679514%0.68%0.679514%0.030318%0.713830%0.047764%0.709831%0.71%66,90666.9k4.168%4.17%-0.636176%-0.050897%-0.720108%-0.687072%0.69%0.636176%0.720108%0.071664%0.636176%0.64%21,24121.2k1.323%1.32%-0.610945%-0.741386%-0.610945%0.61%0.610945%0.007102%0.741386%0.058263%0.618047%0.62%19,72819.7k1.229%1.23%-0.617113%-0.672557%-0.617113%0.62%0.617113%0.007071%0.672557%0.037001%0.624184%0.62%39,85139.9k2.483%2.48%-0.561544%-0.659372%-0.561544%0.56%0.561544%0.023091%0.659372%0.030790%0.584635%0.58%55,19655.2k3.439%3.44%-0.584556%-0.642360%-0.584556%0.58%0.584556%0.003925%0.642360%0.027891%0.588481%0.59%94,14994.1k5.865%5.87%-0.582625%-0.643238%-0.582625%0.58%0.582625%0.046984%0.643238%0.027157%0.629610%0.63%97,29597.3k6.061%6.06%-0.594399%-0.632325%-0.594399%0.59%0.594399%0.026887%0.632325%0.028642%0.621287%0.62%97,57297.6k6.078%6.08%
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 California and Alameda County
More Females More Males
California
Alameda County
80%60%40%20%0%20%M:FFM85+80-8475-7970-7467-6965-6662-6460-6155-5950-5445-4940-4435-3930-3425-2922-24212018-1915-1710-145-90-4-88.094241%-81.049811%-88.094241%88.1%0.5320.5365.289%65.3%34.711%34.7%-42.380813%-36.274956%-42.380813%42.4%0.7020.7058.743%58.7%41.257%41.3%-32.077253%-24.884451%-32.077253%32.1%0.7570.7656.911%56.9%43.089%43.1%-23.840163%-17.158978%-23.840163%23.8%0.8070.8155.325%55.3%44.675%44.7%-11.670468%-14.302341%-11.670468%11.7%0.8950.9052.757%52.8%47.243%47.2%-12.712445%-12.442599%-12.712445%12.7%0.8870.8952.988%53.0%47.012%47.0%-15.102126%-9.736728%-15.102126%15.1%0.8690.8753.510%53.5%46.490%46.5%-6.158601%-7.368277%-6.158601%6.2%0.9420.9451.494%51.5%48.506%48.5%-4.912521%-5.040236%-4.912521%4.9%0.9530.9551.199%51.2%48.801%48.8%-3.801080%-1.801966%-3.801080%3.8%0.9630.9650.933%50.9%49.067%49.1%-0.835450%-0.835450%0.8%0.204484%0.9920.9950.208%50.2%49.792%49.8%2.752820%0.143012%2.752820%2.8%1.0281.0349.321%49.3%50.679%50.7%-6.484127%-6.484127%6.5%1.197933%0.9390.9451.570%51.6%48.430%48.4%-2.711349%-2.711349%2.7%4.104936%0.9740.9750.669%50.7%49.331%49.3%-0.654397%-0.654397%0.7%6.586347%0.9930.9950.163%50.2%49.837%49.8%4.461694%6.691182%4.461694%4.5%1.0451.0448.909%48.9%51.091%51.1%-8.000392%-8.000392%8.0%9.951788%0.9260.9351.923%51.9%48.077%48.1%1.162435%7.858621%1.162435%1.2%1.0121.0149.711%49.7%50.289%50.3%1.145770%5.501565%1.145770%1.1%1.0111.0149.715%49.7%50.285%50.3%4.112122%4.669609%4.112122%4.1%1.0411.0448.993%49.0%51.007%51.0%0.671398%4.341943%0.671398%0.7%1.0071.0149.833%49.8%50.167%50.2%8.064240%4.221871%8.064240%8.1%1.0811.0848.062%48.1%51.938%51.9%4.523445%4.529655%4.523445%4.5%1.0451.0548.894%48.9%51.106%51.1%
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 Alameda County

Children Age Cohorts by County Subdivision#5

Percentage of population aged 0 to 17 (%):
14.5%16.6%18.6%20.6%22.6%24.7%

College Age Cohorts by County Subdivision#6

Percentage of population aged 18 to 21 (%):
3.0%5.3%7.7%10.0%12.3%14.7%

20s Age Cohorts by County Subdivision#7

Percentage of population aged 22 to 29 (%):
8.5%10.3%12.1%13.9%15.6%17.5%

30s Age Cohorts by County Subdivision#8

Percentage of population aged 30 to 39 (%):
13.1%14.0%14.8%15.6%16.4%17.3%

40s Age Cohorts by County Subdivision#9

Percentage of population aged 40 to 49 (%):
11.4%12.4%13.4%14.4%15.4%16.4%

50s Age Cohorts by County Subdivision#10

Percentage of population aged 50 to 59 (%):
10.4%11.6%12.7%13.8%14.9%16.0%

60s Age Cohorts by County Subdivision#11

Percentage of population aged 60 to 69 (%):
9.30%9.71%10.12%10.53%10.95%11.36%

70s Age Cohorts by County Subdivision#12

Percentage of population aged 70 to 79 (%):
4.67%4.92%5.18%5.43%5.68%5.94%

80+ Age Cohorts by County Subdivision#13

Percentage of population aged 80 and older (%):
2.56%2.79%3.02%3.25%3.48%3.71%
Road Data ©OpenStreetMap

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Map of Age Cohorts by Tract in Alameda County

Children Age Cohorts by Tract#14

Percentage of population aged 0 to 17 (%):
0%7%15%22%29%37%

College Age Cohorts by Tract#15

Percentage of population aged 18 to 21 (%):
0%14%28%41%55%69%

20s Age Cohorts by Tract#16

Percentage of population aged 22 to 29 (%):
0%9%17%26%35%44%

30s Age Cohorts by Tract#17

Percentage of population aged 30 to 39 (%):
3%11%18%25%32%40%

40s Age Cohorts by Tract#18

Percentage of population aged 40 to 49 (%):
0%8%17%25%33%42%

50s Age Cohorts by Tract#19

Percentage of population aged 50 to 59 (%):
1.4%6.0%10.5%15.0%19.5%24.0%

60s Age Cohorts by Tract#20

Percentage of population aged 60 to 69 (%):
0.0%4.3%8.6%13.0%17.3%21.7%

70s Age Cohorts by Tract#21

Percentage of population aged 70 to 79 (%):
0.0%3.2%6.4%9.6%12.8%16.0%

80+ Age Cohorts by Tract#22

Percentage of population aged 80 and older (%):
0.0%3.4%6.8%10.2%13.6%17.1%
Road Data ©OpenStreetMap

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Map of Age Cohorts by Block Group in Alameda County

Children Age Cohorts by Block Group#23

Percentage of population aged 0 to 17 (%):
0%11%22%33%44%55%

College Age Cohorts by Block Group#24

Percentage of population aged 18 to 21 (%):
0%16%32%48%64%81%

20s Age Cohorts by Block Group#25

Percentage of population aged 22 to 29 (%):
0%11%21%32%43%54%

30s Age Cohorts by Block Group#26

Percentage of population aged 30 to 39 (%):
0%20%40%60%80%100%

40s Age Cohorts by Block Group#27

Percentage of population aged 40 to 49 (%):
0%8%17%25%33%42%

50s Age Cohorts by Block Group#28

Percentage of population aged 50 to 59 (%):
0%8%16%23%31%40%

60s Age Cohorts by Block Group#29

Percentage of population aged 60 to 69 (%):
0%11%22%33%44%56%

70s Age Cohorts by Block Group#30

Percentage of population aged 70 to 79 (%):
0.0%4.3%8.6%12.9%17.2%21.6%

80+ Age Cohorts by Block Group#31

Percentage of population aged 80 and older (%):
0%6%11%17%22%28%
Road Data ©OpenStreetMap

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Age Cohorts by Place in Alameda County

There are 20 places in Alameda County. This section compares all 20 of those to each other, Alameda County, and other entities that contain or substantially overlap with Alameda County.

Children by Place#32

Percentage of population aged 0 to 17 (%):
Scope: population of Alameda County, selected places in Alameda County, and entities that contain Alameda County
0%5%10%15%20%25%Count#AshlandAlbanyPiedmontPleasantonCherrylandDublinLivermoreWestFremontCaliforniaPacificUnited States of AmericaUnited StatesCastro ValleyHaywardSan LorenzoAlameda CountyAlamedaNewarkUnion CitySan LeandroSan Francisco, Oakland, and Hayward Metro AreaSan FranciscoOaklandAlamedaFairviewSunolBerkeleyEmeryville28.442029%28.442029%28.4%6,908126.694130%26.694130%26.7%5,184226.470851%26.470851%26.5%2,965326.067544%26.067544%26.1%20,08420.1k425.361742%25.361742%25.4%3,821524.475909%24.475909%24.5%13,34513.3k623.829674%23.829674%23.8%20,61120.6k723.760486%23.760486%23.8%17,834,66617.8M23.696772%23.696772%23.7%54,01354.0k823.646283%23.646283%23.6%9,140,2839.14M23.336041%23.336041%23.3%12,102,10512.1M23.108006%23.108006%23.1%73,612,43873.6M22.546757%22.546757%22.5%14,16514.2k922.403516%22.403516%22.4%34,61534.6k1021.787011%21.787011%21.8%5,4011121.443331%21.443331%21.4%344,212344k21.415941%21.415941%21.4%9,5681220.609524%20.609524%20.6%15,14815.1k1320.462943%20.462943%20.5%18,22018.2k1420.429183%20.429183%20.4%935,152935k20.390011%20.390011%20.4%84,01584.0k1520.267669%20.267669%20.3%15,68915.7k1619.640374%19.640374%19.6%2,1191714.541833%14.541833%14.5%1461812.590969%12.590969%12.6%14,93114.9k199.909099%9.909099%9.9%1,10120
Count number of children
# rank of place out of 20 by %

Age Cohorts by County Subdivision in Alameda County

There are 6 county subdivisions in Alameda County. This section compares all 6 of those to each other, Alameda County, and other entities that contain or substantially overlap with Alameda County.

Children by County Subdivision#41

Percentage of population aged 0 to 17 (%):
Scope: population of Alameda County, selected county subdivisions in Alameda County, and entities that contain Alameda County
0%5%10%15%20%Count#Livermore-PleasantonLivermore-Pleasant…WestCaliforniaPacificUnited States of AmericaUnited StatesFremontHaywardAlameda CountyAlamedaSan Francisco, Oakland, and Hayward Metro AreaSan FranciscoOaklandAlamedaBerkeley24.636401%24.636401%24.6%54,95155.0k123.760486%23.760486%23.8%17,834,66617.8M23.646283%23.646283%23.6%9,140,2839.14M23.336041%23.336041%23.3%12,102,10512.1M23.108006%23.108006%23.1%73,612,43873.6M22.761568%22.761568%22.8%78,49678.5k222.418273%22.418273%22.4%86,88086.9k321.443331%21.443331%21.4%344,212344k20.429183%20.429183%20.4%935,152935k20.278714%20.278714%20.3%88,08188.1k420.267669%20.267669%20.3%15,68915.7k514.575559%14.575559%14.6%20,11520.1k6
Count number of children
# rank of county subdivision out of 6 by %

Age Cohorts by County in the San Francisco Area

There are 5 counties in the San Francisco Area. This section compares Alameda County to all of the counties in the San Francisco Area and to those entities that contain or substantially overlap with Alameda County.

Children by County#50

Percentage of population aged 0 to 17 (%):
Scope: population of Alameda County, selected other counties in the San Francisco Area, and entities that contain Alameda County
0%5%10%15%20%Count#WestCaliforniaContra Costa CountyContra CostaPacificUnited States of AmericaUnited StatesSan Mateo CountySan MateoAlameda CountyAlamedaMarin CountyMarinSan Francisco, Oakland, and Hayward Metro AreaSan FranciscoSan Francisco CountySan Francisco23.760486%23.760486%23.8%17,834,66617.8M23.646283%23.646283%23.6%9,140,2839.14M23.527315%23.527315%23.5%260,665261k123.336041%23.336041%23.3%12,102,10512.1M23.108006%23.108006%23.1%73,612,43873.6M21.522415%21.522415%21.5%162,440162k221.443331%21.443331%21.4%344,212344k320.514887%20.514887%20.5%53,20753.2k420.429183%20.429183%20.4%935,152935k13.481174%13.481174%13.5%114,628115k5
Count number of children
# rank of county out of 5 by %

Age Cohorts by County in California

There are 58 counties in California. This section compares Alameda County to the 50 most populous counties in California and to those entities that contain or substantially overlap with Alameda County. The least populous of the compared counties has a population of 21,361.

Children by County#59

Percentage of population aged 0 to 17 (%):
Scope: population of Alameda County, selected other counties in California, and entities that contain Alameda County
0%10%20%30%Count#Tulare CountyTulareMerced CountyMercedKern CountyKernFresno CountyFresnoImperial CountyImperialSan Joaquin CountySan JoaquinYuba CountyYubaMadera CountyMaderaColusa CountyColusaKings CountyKingsStanislaus CountyStanislausSan Bernardino CountySan BernardinoGlenn CountyGlennSan Benito CountySan BenitoMonterey CountyMontereyRiverside CountyRiversideSutter CountySutterSacramento CountySacramentoVentura CountyVenturaTehama CountyTehamaWestCaliforniaContra Costa CountyContra CostaPacificUnited States of AmericaUnited StatesSanta Clara CountySanta ClaraOrange CountyOrangeSolano CountySolanoPlacer CountyPlacerLos Angeles CountyLos AngelesSanta Barbara CountySanta BarbaraSan Diego CountySan DiegoNapa CountyNapaMendocino CountyMendocinoYolo CountyYoloShasta CountyShastaSan Mateo CountySan MateoAlameda CountyAlamedaDel Norte CountyDel NorteEl Dorado CountyEl DoradoSonoma CountySonomaMarin CountyMarinSan Francisco, Oakland, and Hayward Metro AreaSan FranciscoLake CountyLakeButte CountyButteSiskiyou CountySiskiyouSanta Cruz CountySanta CruzHumboldt CountyHumboldtSan Luis Obispo CountySan Luis ObispoCalaveras CountyCalaverasNevada CountyNevadaTuolumne CountyTuolumneLassen CountyLassenAmador CountyAmadorSan Francisco CountySan Francisco31.582885%31.582885%31.6%143,945144k130.114981%30.114981%30.1%79,80579.8k229.467014%29.467014%29.5%256,757257k328.888866%28.888866%28.9%278,246278k428.713082%28.713082%28.7%51,34151.3k527.910500%27.910500%27.9%199,521200k627.884759%27.884759%27.9%20,60620.6k727.817117%27.817117%27.8%42,66242.7k827.788961%27.788961%27.8%5,936927.506139%27.506139%27.5%41,33141.3k1027.435111%27.435111%27.4%145,560146k1127.363518%27.363518%27.4%576,482576k1227.066057%27.066057%27.1%7,5721327.058965%27.058965%27.1%15,70815.7k1426.473439%26.473439%26.5%113,889114k1526.401700%26.401700%26.4%613,547614k1626.392470%26.392470%26.4%25,18025.2k1724.396471%24.396471%24.4%360,897361k1824.216057%24.216057%24.2%204,168204k1924.056177%24.056177%24.1%15,15915.2k2023.760486%23.760486%23.8%17,834,66617.8M23.646283%23.646283%23.6%9,140,2839.14M23.527315%23.527315%23.5%260,665261k2123.336041%23.336041%23.3%12,102,10512.1M23.108006%23.108006%23.1%73,612,43873.6M23.087802%23.087802%23.1%435,218435k2223.024375%23.024375%23.0%721,172721k2323.007663%23.007663%23.0%98,84098.8k2422.975624%22.975624%23.0%85,14185.1k2522.837323%22.837323%22.8%2,296,7852.30M2622.501394%22.501394%22.5%98,87098.9k2722.366565%22.366565%22.4%727,664728k2821.908353%21.908353%21.9%30,85230.9k2921.786086%21.786086%21.8%19,04319.0k3021.678248%21.678248%21.7%45,45345.5k3121.660678%21.660678%21.7%38,82238.8k3221.522415%21.522415%21.5%162,440162k3321.443331%21.443331%21.4%344,212344k3421.192269%21.192269%21.2%5,8553520.986885%20.986885%21.0%38,40638.4k3620.626748%20.626748%20.6%102,675103k3720.514887%20.514887%20.5%53,20753.2k3820.429183%20.429183%20.4%935,152935k20.332106%20.332106%20.3%13,02813.0k3920.311153%20.311153%20.3%45,47245.5k4020.245947%20.245947%20.2%8,8414120.123943%20.123943%20.1%54,52254.5k4219.528488%19.528488%19.5%26,39926.4k4318.233099%18.233099%18.2%50,81250.8k4417.956103%17.956103%18.0%8,0424517.790124%17.790124%17.8%17,54817.5k4616.677187%16.677187%16.7%8,9834716.472061%16.472061%16.5%5,2624815.542570%15.542570%15.5%5,7454913.481174%13.481174%13.5%114,628115k50
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 Alameda County to the 50 most populous counties in the United States and to those entities that contain or substantially overlap with Alameda 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 Alameda County, selected other counties in the United States, and entities that contain Alameda 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 CountyClarkWestFranklin CountyFranklinCaliforniaFairfield CountyFairfieldMontgomery CountyMontgomeryContra Costa CountyContra CostaKings CountyKingsPacificHillsborough 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 CountyCuyahogaAlameda CountyAlamedaKing CountyKingMiami-Dade CountyMiami-DadeMiddlesex CountyMiddlesexQueens CountyQueensSan Francisco, Oakland, and Hayward Metro AreaSan FranciscoPalm 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%493,981494k1723.760486%23.760486%23.8%17,834,66617.8M23.668593%23.668593%23.7%291,625292k1823.646283%23.646283%23.6%9,140,2839.14M23.577077%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%608,369608k2223.336041%23.336041%23.3%12,102,10512.1M23.197227%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%271,499271k4221.443331%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%472,878473k4720.429183%20.429183%20.4%935,152935k19.641010%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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Principal Cities:
Oakland, Hayward, Berkeley, San Leandro, Pleasanton
Cities:
Alameda, Albany, Berkeley, Dublin, Emeryville, Fremont, Hayward, Livermore, Newark, Oakland, Piedmont, Pleasanton, San Leandro, Union City
Unincorporated Places:
Ashland, Castro Valley, Cherryland, Fairview, San Lorenzo, Sunol
ZIP Codes:
94501, 94502, 94505, 94514, 94536, 94538, 94539, 94541, 94542, 94544, 94545, 94546, 94550, 94551, 94552, 94555, 94560, 94566, 94568, 94577, 94578, 94579, 94580, 94586, 94587, 94588, 94601, 94602, 94603, 94605, 94606, 94607, 94608, 94609, 94610, 94611, 94612, 94613, 94618, 94619, 94621, 94702, 94703, 94704, 94705, 94706, 94707, 94708, 94709, 94710, 94720, 95035, 95377, 95391
Unified School Districts:
Alameda, Albany, Berkeley, Castro Valley, Dublin, Emery, Fremont, Hayward, Livermore Valley, New Haven, Newark, Oakland, Piedmont, Pleasanton, San Leandro, San Lorenzo, Sunol Glen
Elementary School District:
Mountain House
Congressional Districts:
CA-13, CA-15, CA-17
State Senate Districts:
CA-7, CA-9, CA-10
Assembly Districts:
CA-15, CA-16, CA-18, CA-20, CA-25
Neighboring Counties:
Contra Costa, San Francisco, San Joaquin, San Mateo, Santa Clara, Stanislaus
Nearby Counties:
Marin, Santa Cruz, Solano