Age and Sex in Ross Valley, Marin County, California (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 Marin County.
Scope: population of Marin County, Ross Valley, and other county subdivisions in Marin County
Ross Valley
Marin County
Percentile:
0th - 100th
10th - 90th
20th - 80th
30th - 70th
40th - 60th
0.0%0.5%1.0%1.5%Count%85+80-8475-7970-7467-6965-6662-6460-6155-5950-5445-4940-4435-3930-3425-2922-24212018-1915-1710-145-90-41,1591.985%1.99%1,3502.312%2.31%1,8053.092%3.09%2,7164.652%4.65%2,1753.726%3.73%1,8903.237%3.24%2,4944.272%4.27%1,8593.184%3.18%4,6437.953%7.95%5,2278.953%8.95%4,8648.332%8.33%4,4507.622%7.62%3,4545.916%5.92%2,3083.953%3.95%2,1053.606%3.61%1,8563.179%3.18%4550.779%0.78%2840.486%0.49%1,0611.817%1.82%2,3424.012%4.01%4,6137.902%7.90%3,1495.394%5.39%2,1213.633%3.63%
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 Marin County and Ross Valley
Female Male
Marin County
Ross Valley
Shaded bar tips show excess over facing bar.
0.5%0.0%0.5%Count%Senior2Older Adult3Younger Adult4College5Children6-0.232290%-0.063330%-0.239223%-0.062162%-0.295621%0.30%0.232290%0.239223%0.232290%0.23%11,09511.1k19.005%19.0%-0.782871%-0.046934%-0.752088%-0.050648%-0.829805%0.83%0.782871%0.752088%0.782871%0.78%23,53723.5k40.317%40.3%-0.389879%-0.465166%-0.389879%0.39%0.389879%0.145503%0.465166%0.035472%0.535381%0.54%9,72316.655%16.7%-0.371703%-0.433089%-0.371703%0.37%0.371703%0.027407%0.433089%0.075860%0.399109%0.40%1,8003.083%3.08%-0.548894%-0.065567%-0.561536%-0.614461%0.61%0.548894%0.561536%0.016644%0.548894%0.55%12,22512.2k20.940%20.9%
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 Marin County and Ross Valley
Female Male
Marin County
Ross Valley
Shaded bar tips show excess over facing bar.
0.5%0.0%0.5%Count%85+80-8475-7970-7467-6965-6662-6460-6155-5950-5445-4940-4435-3930-3425-2922-24212018-1915-1710-145-90-4-0.037791%-0.048497%-0.057377%-0.046774%-0.086288%0.09%0.037791%0.057377%0.037791%0.04%1,1591.985%1.99%-0.216513%-0.029462%-0.200264%-0.057218%-0.245975%0.25%0.216513%0.200264%0.216513%0.22%1,3502.312%2.31%-0.256937%-0.104488%-0.283392%-0.085056%-0.361425%0.36%0.256937%0.283392%0.256937%0.26%1,8053.092%3.09%-0.445015%-0.480648%-0.006169%-0.445015%0.45%0.445015%0.040425%0.480648%0.485440%0.49%2,7164.652%4.65%-0.495604%-0.250657%-0.550590%-0.187386%-0.746260%0.75%0.495604%0.550590%0.495604%0.50%2,1753.726%3.73%-0.738267%-0.142172%-0.610353%-0.092536%-0.880439%0.88%0.738267%0.610353%0.738267%0.74%1,8903.237%3.24%-0.589243%-0.245518%-0.679241%-0.107188%-0.834761%0.83%0.589243%0.679241%0.589243%0.59%2,4944.272%4.27%-0.774238%-0.795618%-0.095814%-0.774238%0.77%0.774238%0.043679%0.795618%0.817917%0.82%1,8593.184%3.18%-0.750942%-0.740598%-0.077422%-0.750942%0.75%0.750942%0.088729%0.740598%0.839671%0.84%4,6437.953%7.95%-0.894484%-0.001713%-0.786172%-0.042258%-0.896197%0.90%0.894484%0.786172%0.894484%0.89%5,2278.953%8.95%-0.804385%-0.057554%-0.786018%-0.028840%-0.861939%0.86%0.804385%0.786018%0.804385%0.80%4,8648.332%8.33%-0.695101%-0.134293%-0.721859%-0.002082%-0.829394%0.83%0.695101%0.721859%0.695101%0.70%4,4507.622%7.62%-0.511134%-0.573416%-0.511134%0.51%0.511134%0.161014%0.573416%0.001619%0.672148%0.67%3,4545.916%5.92%-0.314149%-0.472012%-0.314149%0.31%0.314149%0.162384%0.472012%0.030537%0.476533%0.48%2,3083.953%3.95%-0.293594%-0.380941%-0.293594%0.29%0.293594%0.133950%0.380941%0.078347%0.427544%0.43%2,1053.606%3.61%-0.474478%-0.413714%-0.474478%0.47%0.474478%0.110769%0.413714%0.028661%0.585246%0.59%1,8563.179%3.18%-0.337444%-0.337372%-0.337444%0.34%0.337444%0.104488%0.337372%0.161167%0.441932%0.44%4550.779%0.78%-0.195272%-0.095923%-0.426438%-0.291196%0.29%0.195272%0.426438%0.107188%0.195272%0.20%2840.486%0.49%-0.429085%-0.484273%-0.429085%0.43%0.429085%0.050531%0.484273%0.017543%0.479616%0.48%1,0611.817%1.82%-0.635492%-0.066233%-0.569355%-0.701724%0.70%0.635492%0.569355%0.010667%0.635492%0.64%2,3424.012%4.01%-0.697499%-0.185337%-0.625468%-0.008791%-0.882837%0.88%0.697499%0.625468%0.697499%0.70%4,6137.902%7.90%-0.530661%-0.017472%-0.568095%-0.548133%0.55%0.530661%0.568095%0.039251%0.530661%0.53%3,1495.394%5.39%-0.360055%-0.477564%-0.360055%0.36%0.360055%0.006509%0.477564%0.023057%0.366564%0.37%2,1213.633%3.63%
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 Marin County and Ross Valley
More Females More Males
Marin County
Ross Valley
100%50%0%50%M:FFM85+80-8475-7970-7467-6965-6662-6460-6155-5950-5445-4940-4435-3930-3425-2922-24212018-1915-1710-145-90-4-128.328612%-81.520370%-128.328612%128.3%0.4380.4469.543%69.5%30.457%30.5%-13.607595%-28.571429%-13.607595%13.6%0.8800.8853.185%53.2%46.815%46.8%-40.666667%-30.013605%-40.666667%40.7%0.7110.7158.449%58.4%41.551%41.6%-1.283491%9.083911%9.083911%9.1%1.0911.0947.828%47.8%52.172%52.2%-50.576037%-34.033613%-50.576037%50.6%0.6640.6660.092%60.1%39.908%39.9%-19.257541%-15.161087%-19.257541%19.3%0.8390.8454.392%54.4%45.608%45.6%-41.666667%-15.780511%-41.666667%41.7%0.7060.7158.621%58.6%41.379%41.4%-12.042646%5.641593%5.641593%5.6%1.0561.0648.628%48.6%51.372%51.4%-10.453978%11.815693%11.815693%11.8%1.1181.1247.211%47.2%52.789%52.8%-0.191498%-5.375184%-0.191498%0.2%0.9981.0050.048%50.0%49.952%50.0%-7.155026%-3.669185%-7.155026%7.2%0.9330.9351.727%51.7%48.273%48.3%-19.319862%-0.288431%-19.319862%19.3%0.8380.8454.404%54.4%45.596%45.6%31.501340%0.282410%31.501340%31.5%1.3151.3243.196%43.2%56.804%56.8%51.690294%6.469531%51.690294%51.7%1.5171.5239.731%39.7%60.269%60.3%45.624271%20.566802%45.624271%45.6%1.4561.4640.713%40.7%59.287%59.3%23.345367%6.927617%23.345367%23.3%1.2331.2344.774%44.8%55.226%55.2%30.964467%47.771429%30.964467%31.0%1.3101.3143.297%43.3%56.703%56.7%-49.122807%-49.122807%49.1%25.135624%0.6710.6759.859%59.9%40.141%40.1%11.776447%3.622611%11.776447%11.8%1.1181.1247.220%47.2%52.780%52.8%-10.422282%-10.422282%10.4%1.873589%0.9060.9152.477%52.5%47.523%47.5%-26.571709%-1.405499%-26.571709%26.6%0.7900.7955.864%55.9%44.136%44.1%-3.292447%-3.292447%3.3%6.909190%0.9680.9750.810%50.8%49.190%49.2%1.807802%4.828032%1.807802%1.8%1.0181.0249.552%49.6%50.448%50.4%
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 Ross Valley

Children Age Cohorts by Neighborhood#5

Percentage of population aged 0 to 17 (%):
17.8%20.4%22.9%25.4%27.9%30.5%

College Age Cohorts by Neighborhood#6

Percentage of population aged 18 to 21 (%):
0.9%1.9%3.0%4.0%5.0%6.1%

20s Age Cohorts by Neighborhood#7

Percentage of population aged 22 to 29 (%):
1.1%2.0%2.8%3.6%4.4%5.3%

30s Age Cohorts by Neighborhood#8

Percentage of population aged 30 to 39 (%):
3.6%5.9%8.1%10.3%12.5%14.7%

40s Age Cohorts by Neighborhood#9

Percentage of population aged 40 to 49 (%):
14.7%15.2%15.8%16.3%16.8%17.3%

50s Age Cohorts by Neighborhood#10

Percentage of population aged 50 to 59 (%):
13.9%15.5%17.2%18.8%20.4%22.1%

60s Age Cohorts by Neighborhood#11

Percentage of population aged 60 to 69 (%):
11.0%12.3%13.6%14.9%16.2%17.5%

70s Age Cohorts by Neighborhood#12

Percentage of population aged 70 to 79 (%):
5.9%6.8%7.6%8.4%9.2%10.1%

80+ Age Cohorts by Neighborhood#13

Percentage of population aged 80 and older (%):
1.5%3.5%5.5%7.5%9.5%11.5%
Road Data ©OpenStreetMap

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Map of Age Cohorts by Tract in Ross Valley

Children Age Cohorts by Tract#14

Percentage of population aged 0 to 17 (%):
0%6%12%17%23%30%

College Age Cohorts by Tract#15

Percentage of population aged 18 to 21 (%):
0.7%2.9%5.1%7.2%9.4%11.7%

20s Age Cohorts by Tract#16

Percentage of population aged 22 to 29 (%):
3.6%8.2%12.9%17.5%22.1%26.7%

30s Age Cohorts by Tract#17

Percentage of population aged 30 to 39 (%):
5.3%9.2%13.1%17.0%21.0%24.9%

40s Age Cohorts by Tract#18

Percentage of population aged 40 to 49 (%):
12.2%13.9%15.6%17.3%19.1%20.8%

50s Age Cohorts by Tract#19

Percentage of population aged 50 to 59 (%):
12.2%14.0%15.6%17.3%19.0%20.8%

60s Age Cohorts by Tract#20

Percentage of population aged 60 to 69 (%):
5.3%8.0%10.7%13.3%16.0%18.7%

70s Age Cohorts by Tract#21

Percentage of population aged 70 to 79 (%):
0.7%3.1%5.4%7.8%10.1%12.5%

80+ Age Cohorts by Tract#22

Percentage of population aged 80 and older (%):
0.0%3.2%6.4%9.6%12.8%16.1%
Road Data ©OpenStreetMap

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Map of Age Cohorts by Block Group in Ross Valley

Children Age Cohorts by Block Group#23

Percentage of population aged 0 to 17 (%):
0%7%14%21%28%36%

College Age Cohorts by Block Group#24

Percentage of population aged 18 to 21 (%):
0.0%2.3%4.6%7.0%9.3%11.7%

20s Age Cohorts by Block Group#25

Percentage of population aged 22 to 29 (%):
0%5%11%16%21%27%

30s Age Cohorts by Block Group#26

Percentage of population aged 30 to 39 (%):
0.0%5.0%9.9%14.9%19.9%24.9%

40s Age Cohorts by Block Group#27

Percentage of population aged 40 to 49 (%):
6%12%17%23%28%34%

50s Age Cohorts by Block Group#28

Percentage of population aged 50 to 59 (%):
7.1%11.4%15.6%19.9%24.2%28.5%

60s Age Cohorts by Block Group#29

Percentage of population aged 60 to 69 (%):
4.5%8.5%12.5%16.6%20.6%24.6%

70s Age Cohorts by Block Group#30

Percentage of population aged 70 to 79 (%):
0.7%5.2%9.6%14.0%18.5%23.0%

80+ Age Cohorts by Block Group#31

Percentage of population aged 80 and older (%):
0%6%12%18%24%31%
Road Data ©OpenStreetMap

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Age Cohorts by Neighborhood in Ross Valley

There are 5 neighborhoods that are fully or partially contained within Ross Valley (0 fully and 5 partially). This section compares all 5 of those to each other, Ross Valley, and other entities that contain or substantially overlap with Ross Valley.

Children by Neighborhood#32

Percentage of population aged 0 to 17 (%):
Scope: population of Ross Valley, selected neighborhoods in Ross Valley, and entities that contain Ross Valley
0%10%20%30%Count#Blithedale Canyon NeighborhoodBlithedale CanyonWestCaliforniaPacificUnited States of AmericaUnited StatesScott Valley NeighborhoodScott ValleyLucas Valley NeighborhoodLucas ValleyRoss ValleyMarin CountyMarinSan Francisco, Oakland, and Hayward Metro AreaSan FranciscoWest End NeighborhoodWest EndTerra Linda NeighborhoodTerra Linda30.460672%30.460672%30.5%420421123.760486%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%73,612,43873.6M23.106424%23.106424%23.1%195222.746275%22.746275%22.7%515516320.940391%20.940391%20.9%12,22512.2k20.514887%20.514887%20.5%53,20753.2k20.429183%20.429183%20.4%935,152935k19.765133%19.765133%19.8%378379417.854049%17.854049%17.9%1,6045
Count number of children
# rank of neighborhood out of 5 by %

Age Cohorts by County Subdivision in the San Francisco Area

There are 22 county subdivisions in the San Francisco Area. This section compares Ross Valley to all of the county subdivisions in the San Francisco Area and to those entities that contain or substantially overlap with Ross Valley.

Children by County Subdivision#41

Percentage of population aged 0 to 17 (%):
Scope: population of Ross Valley, selected other county subdivisions in the San Francisco Area, and entities that contain Ross Valley
0%10%20%30%Count#TassajaraEast Contra CostaE Contra CostaAntioch-PittsburgLivermore-PleasantonLivermore-Pleasant…WestCaliforniaPacificSan MateoUnited States of AmericaUnited StatesFremontHaywardCentral Contra CostaCntrl Contra CostaWest Contra CostaW Contra CostaNovatoRoss ValleySoutheast MarinSE MarinMarin CountyMarinSan Francisco, Oakland, and Hayward Metro AreaSan FranciscoSan RafaelOaklandAlamedaHalf Moon BaySouth San FranciscoS San FranciscoNorthwest MarinNW MarinBerkeleyBrionesSan FranciscoBolinas30.556964%30.556964%30.6%19,27919.3k127.224874%27.224874%27.2%35,99736.0k226.182218%26.182218%26.2%40,68940.7k324.636401%24.636401%24.6%54,95155.0k423.760486%23.760486%23.8%17,834,66617.8M23.646283%23.646283%23.6%9,140,2839.14M23.336041%23.336041%23.3%12,102,10512.1M23.297112%23.297112%23.3%94,14294.1k523.108006%23.108006%23.1%73,612,43873.6M22.761568%22.761568%22.8%78,49678.5k622.418273%22.418273%22.4%86,88086.9k721.890089%21.890089%21.9%108,396108k821.643526%21.643526%21.6%55,57355.6k921.225232%21.225232%21.2%13,19713.2k1020.940391%20.940391%20.9%12,22512.2k1120.654810%20.654810%20.7%11,24211.2k1220.514887%20.514887%20.5%53,20753.2k20.429183%20.429183%20.4%935,152935k20.331329%20.331329%20.3%14,94814.9k1320.278714%20.278714%20.3%88,08188.1k1420.267669%20.267669%20.3%15,68915.7k1520.247583%20.247583%20.2%6,1991619.403573%19.403573%19.4%62,09962.1k1715.928450%15.928450%15.9%1,3091814.575559%14.575559%14.6%20,11520.1k1913.905269%13.905269%13.9%7312013.481174%13.481174%13.5%114,628115k2110.858011%10.858011%10.9%28622
Count number of children
# rank of county subdivision out of 22 by %

Age Cohorts by County Subdivision in California

There are 397 county subdivisions in California. This section compares Ross Valley to the 50 most populous county subdivisions in California and to those entities that contain or substantially overlap with Ross Valley. The least populous of the compared county subdivisions has a population of 168,048.

Children by County Subdivision#50

Percentage of population aged 0 to 17 (%):
Scope: population of Ross Valley, selected other county subdivisions in California, and entities that contain Ross Valley
0%10%20%30%Count#BakersfieldSalinasVictorville-HesperiaSouth Antelope ValleyS Antelope VlySouth Gate-East Los AngelesS Gate-E Los Ang…San BernardinoPerris ValleyMurrietaFresnoStocktonCoachella ValleyCoachella VlyNorth Antelope ValleyN Antelope VlyOxnardModestoComptonNewhallCoronaRiversideMission ViejoInglewoodDowney-NorwalkIrvine-Lake ForestIrvine-Lk FrstOntarioLivermore-PleasantonLivermore-Pleasant…Anaheim-Santa Ana-Garden GroveAnaheim-Santa An…SacramentoLong Beach-LakewoodLong Bch-LakewoodWestCaliforniaOceanside-EscondidoOceanside-Escond…PacificSan MateoWhittierUnited States of AmericaUnited StatesSan JoseEast San Gabriel ValleyE San Gabriel VlyFremontUpper San Gabriel ValleyUpper San Gabriel …HaywardSanta RosaSan DiegoCentral Contra CostaCntrl Contra CostaWest Contra CostaW Contra CostaSan Fernando ValleySan Fernando VlyRoss ValleyLos AngelesMarin CountyMarinSan Francisco, Oakland, and Hayward Metro AreaSan FranciscoPasadenaOaklandSouth CoastNorth CoastSouth San FranciscoS San FranciscoSouthwest San Gabriel ValleySW San Gabriel VlyCentral CoastSanta BarbaraSan Francisco30.255492%30.255492%30.3%124,377124k130.103304%30.103304%30.1%50,58850.6k229.435174%29.435174%29.4%111,612112k329.365511%29.365511%29.4%62,62962.6k429.165936%29.165936%29.2%146,441146k528.994345%28.994345%29.0%243,195243k628.846536%28.846536%28.8%82,74682.7k728.640426%28.640426%28.6%87,94187.9k828.397448%28.397448%28.4%196,566197k928.302745%28.302745%28.3%99,59099.6k1028.227720%28.227720%28.2%53,66453.7k1127.930766%27.930766%27.9%53,54353.5k1227.601989%27.601989%27.6%66,82066.8k1327.298986%27.298986%27.3%88,17988.2k1427.269923%27.269923%27.3%95,47895.5k1526.282485%26.282485%26.3%69,57069.6k1626.216001%26.216001%26.2%48,61648.6k1725.927237%25.927237%25.9%123,053123k1825.710652%25.710652%25.7%59,63259.6k1925.154719%25.154719%25.2%94,09594.1k2025.088958%25.088958%25.1%105,268105k2124.862386%24.862386%24.9%61,96962.0k2224.651051%24.651051%24.7%158,701159k2324.636401%24.636401%24.6%54,95155.0k2424.485581%24.485581%24.5%415,583416k2524.105398%24.105398%24.1%270,060270k2624.003737%24.003737%24.0%138,756139k2723.760486%23.760486%23.8%17,834,66617.8M23.646283%23.646283%23.6%9,140,2839.14M23.555887%23.555887%23.6%155,230155k2823.336041%23.336041%23.3%12,102,10512.1M23.297112%23.297112%23.3%94,14294.1k2923.292335%23.292335%23.3%75,73275.7k3023.108006%23.108006%23.1%73,612,43873.6M22.866327%22.866327%22.9%401,701402k3122.814001%22.814001%22.8%218,249218k3222.761568%22.761568%22.8%78,49678.5k3322.722312%22.722312%22.7%75,16775.2k3422.418273%22.418273%22.4%86,88086.9k3522.319074%22.319074%22.3%48,24048.2k3621.982996%21.982996%22.0%523,203523k3721.890089%21.890089%21.9%108,396108k3821.643526%21.643526%21.6%55,57355.6k3921.633042%21.633042%21.6%398,263398k4020.940391%20.940391%20.9%12,22512.2k20.884750%20.884750%20.9%537,723538k4120.514887%20.514887%20.5%53,20753.2k20.429183%20.429183%20.4%935,152935k20.347629%20.347629%20.3%55,72355.7k4220.278714%20.278714%20.3%88,08188.1k4320.167625%20.167625%20.2%63,67063.7k4419.605378%19.605378%19.6%74,22474.2k4519.403573%19.403573%19.4%62,09962.1k4619.084224%19.084224%19.1%61,84361.8k4717.750779%17.750779%17.8%45,58445.6k4816.533978%16.533978%16.5%31,85831.9k4913.481174%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 West

There are 1,950 county subdivisions in the West. This section compares Ross Valley to the 50 most populous county subdivisions in the West and to those entities that contain or substantially overlap with Ross Valley. 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 Ross Valley, selected other county subdivisions in the West, and entities that contain Ross Valley
0%10%20%30%Count#BakersfieldVictorville-HesperiaSouth Gate-East Los AngelesS Gate-E Los Ang…San BernardinoChandlerFresnoStocktonSalt Lake CitySalt Lk CityModestoComptonRiversideSouth AuroraInglewoodDowney-NorwalkPhoenixOntarioBoise CityAnaheim-Santa Ana-Garden GroveAnaheim-Santa An…Beaverton-HillsboroSacramentoLong Beach-LakewoodLong Bch-LakewoodLas VegasEwaWestCaliforniaOceanside-EscondidoOceanside-Escond…PacificSan MateoWhittierColorado 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 JeffersonRoss ValleyLos AngelesDenverMarin CountyMarinSan Francisco, Oakland, and Hayward Metro AreaSan FranciscoOaklandNorth CoastPortland EastSouthwest San Gabriel ValleySW San Gabriel VlySeattleHonoluluSan 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%790,766791k1524.651051%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%17,834,66617.8M23.646283%23.646283%23.6%9,140,2839.14M23.555887%23.555887%23.6%155,230155k2423.336041%23.336041%23.3%12,102,10512.1M23.297112%23.297112%23.3%94,14294.1k2523.292335%23.292335%23.3%75,73275.7k2623.163415%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%98,64098.6k4120.940391%20.940391%20.9%12,22512.2k20.884750%20.884750%20.9%537,723538k4220.705017%20.705017%20.7%137,337137k4320.514887%20.514887%20.5%53,20753.2k20.429183%20.429183%20.4%935,152935k20.278714%20.278714%20.3%88,08188.1k4419.605378%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%71,80671.8k4913.481174%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 Ross Valley to the 50 most populous county subdivisions in the United States and to those entities that contain or substantially overlap with Ross Valley. 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 Ross Valley, selected other county subdivisions in the United States, and entities that contain Ross Valley
0%10%20%Count#San BernardinoSouthwest DallasSW DallasNorthwest HarrisNW HarrisFresnoFort WorthSalt Lake CitySalt Lk CityNortheast TarrantNE TarrantHoustonMilwaukeeSan Antonio CentralSan Antonio CntrlEl PasoNortheast DallasNE DallasBronxPlanoTulsaDetroitPhoenixOntarioTownship 1:Charlotte1, CharlotteAnaheim-Santa Ana-Garden GroveAnaheim-Santa An…SacramentoLong Beach-LakewoodLong Bch-LakewoodLas VegasWestCaliforniaOceanside-EscondidoOceanside-Escond…BrooklynPacificUnited States of AmericaUnited StatesAlbuquerqueSan JoseEast San Gabriel ValleyE San Gabriel VlySeattle EastColumbusTown of HempsteadHempsteadOrlandoPhiladelphiaSan DiegoChicagoTampaAustinSan Fernando ValleySan Fernando VlyTucsonBaltimoreRoss ValleyLos AngelesDenverMarin CountyMarinQueensSan Francisco, Oakland, and Hayward Metro AreaSan FranciscoAtlantaMiamiSeattleWashingtonBostonManhattanSan 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%790,766791k1724.651051%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%17,834,66617.8M23.646283%23.646283%23.6%9,140,2839.14M23.555887%23.555887%23.6%155,230155k2423.337305%23.337305%23.3%608,369608k2523.336041%23.336041%23.3%12,102,10512.1M23.108006%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%131,178131k4020.940391%20.940391%20.9%12,22512.2k20.884750%20.884750%20.9%537,723538k4120.705017%20.705017%20.7%137,337137k4220.514887%20.514887%20.5%53,20753.2k20.470812%20.470812%20.5%472,878473k4320.429183%20.429183%20.4%935,152935k19.876571%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%239,355239k4913.481174%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:
California
County:
Marin
Metro Area:
San Francisco Area
Cities:
Larkspur, Mill Valley
Towns:
Corte Madera, Fairfax, Ross, San Anselmo
Unincorporated Places:
Kentfield, Sleepy Hollow
ZIP Codes:
94901, 94903, 94904, 94925, 94930, 94939, 94957, 94960, 94964
Elementary School Districts:
Dixie, Kentfield, Lagunitas, Larkspur, Mill Valley, Reed, Ross, Ross Valley, San Rafael City
Secondary School Districts:
San Rafael City, Tamalpais
Neighborhoods:
Blithedale Canyon, Lucas Valley, Scott Valley, Terra Linda, West End
Congressional District:
CA-2
State Senate District:
CA-2
Assembly District:
CA-10