Age and Sex in Tract 321102, Contra Costa County, California (Tract)

Age Structure#1

Percentage in each age cohort per year of age.1 Gray areas represent percentile bands from the tracts in Contra Costa County.
Scope: population of Contra Costa County, Tract 321102, and other tracts in Contra Costa County
Tract 321102
Contra Costa County
Percentile:
0th - 100th
10th - 90th
20th - 80th
30th - 70th
40th - 60th
0.0%0.5%1.0%1.5%2.0%2.5%Count%85+80-8475-7970-7467-6965-6662-6460-6155-5950-5445-4940-4435-3930-3425-2922-24212018-1915-1710-145-90-4801.172%1.17%1221.787%1.79%2293.354%3.35%2733.999%4.00%3254.761%4.76%2163.164%3.16%3695.405%5.41%3465.068%5.07%6689.785%9.78%5207.617%7.62%4857.104%7.10%5858.569%8.57%3585.244%5.24%2343.428%3.43%3875.669%5.67%2413.530%3.53%520.762%0.76%350.513%0.51%1051.538%1.54%2924.277%4.28%3515.141%5.14%3605.273%5.27%1942.842%2.84%
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 Contra Costa County and Tract 321102
Female Male
Contra Costa County
Tract 321102
Shaded bar tips show excess over facing bar.
0.5%0.0%0.5%Count%Senior2Older Adult3Younger Adult4College5Children6-0.235991%-0.172277%-0.049986%-0.235991%0.24%0.235991%0.034585%0.172277%0.270576%0.27%1,24518.236%18.2%-0.838436%-0.065036%-0.670276%-0.045566%-0.903472%0.90%0.838436%0.670276%0.838436%0.84%2,97343.548%43.5%-0.486630%-0.019530%-0.628773%-0.009768%-0.506160%0.51%0.486630%0.628773%0.486630%0.49%1,22017.870%17.9%-0.318588%-0.570030%-0.318588%0.32%0.318588%0.065915%0.570030%0.061105%0.384503%0.38%1922.812%2.81%-0.475237%-0.640462%-0.475237%0.48%0.475237%0.023599%0.640462%0.026150%0.498836%0.50%1,19717.533%17.5%
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 Contra Costa County and Tract 321102
Female Male
Contra Costa County
Tract 321102
Shaded bar tips show excess over facing bar.
1.0%0.5%0.0%0.5%1.0%Count%85+80-8475-7970-7467-6965-6662-6460-6155-5950-5445-4940-4435-3930-3425-2922-24212018-1915-1710-145-90-4-0.034788%-0.039838%-0.041812%-0.034788%0.03%0.034788%0.003662%0.039838%0.038450%0.04%801.172%1.17%-0.146477%-0.145912%-0.050852%-0.146477%0.15%0.146477%0.064450%0.145912%0.210927%0.21%1221.787%1.79%-0.333968%-0.212343%-0.042205%-0.333968%0.33%0.333968%0.002930%0.212343%0.336898%0.34%2293.354%3.35%-0.348616%-0.306627%-0.062567%-0.348616%0.35%0.348616%0.102534%0.306627%0.451150%0.45%2733.999%4.00%-0.756799%-0.423434%-0.054907%-0.756799%0.76%0.756799%0.073239%0.423434%0.830038%0.83%3254.761%4.76%-0.761682%-0.484915%-0.093824%-0.761682%0.76%0.761682%0.058591%0.484915%0.820272%0.82%2163.164%3.16%-0.893511%-0.535626%-0.099886%-0.893511%0.89%0.893511%0.014648%0.535626%0.908159%0.91%3695.405%5.41%-1.047312%-0.589390%-0.042963%-1.047312%1.05%1.047312%0.439432%0.589390%1.486744%1.49%3465.068%5.07%-0.820272%-0.316391%-0.674865%-0.032981%-1.136663%1.14%0.820272%0.674865%0.820272%0.82%6689.785%9.78%-0.553684%-0.415995%-0.736133%-0.038631%-0.969679%0.97%0.553684%0.736133%0.553684%0.55%5207.617%7.62%-0.632782%-0.155266%-0.716601%-0.033829%-0.788047%0.79%0.632782%0.716601%0.632782%0.63%4857.104%7.10%-0.667936%-0.666652%-0.045274%-0.667936%0.67%0.667936%0.377911%0.666652%1.045847%1.05%5858.569%8.57%-0.448220%-0.152336%-0.645946%-0.024045%-0.600557%0.60%0.448220%0.645946%0.448220%0.45%3585.244%5.24%-0.319320%-0.046873%-0.634411%-0.017564%-0.366193%0.37%0.319320%0.634411%0.319320%0.32%2343.428%3.43%-0.509741%-0.603326%-0.509741%0.51%0.509741%0.114252%0.603326%0.010560%0.623993%0.62%3875.669%5.67%-0.576144%-0.615565%-0.006860%-0.576144%0.58%0.576144%0.024413%0.615565%0.600557%0.60%2413.530%3.53%-0.278307%-0.205068%-0.578920%-0.483375%0.48%0.278307%0.578920%0.061827%0.278307%0.28%520.762%0.76%-0.000000%-0.550579%0.000000%0.00%0.000000%0.512670%0.550579%0.094140%0.512670%0.51%350.513%0.51%-0.373517%-0.021972%-0.575310%-0.395489%0.40%0.373517%0.575310%0.044227%0.373517%0.37%1051.538%1.54%-0.498023%-0.674053%-0.498023%0.50%0.498023%0.429667%0.674053%0.037969%0.927689%0.93%2924.277%4.28%-0.339827%-0.348616%-0.647553%-0.688443%0.69%0.339827%0.647553%0.053451%0.339827%0.34%3515.141%5.14%-0.436502%-0.672103%-0.002365%-0.436502%0.44%0.436502%0.181632%0.672103%0.618134%0.62%3605.273%5.27%-0.281236%-0.005859%-0.579209%-0.287095%0.29%0.281236%0.579209%0.020272%0.281236%0.28%1942.842%2.84%
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 Contra Costa County and Tract 321102
More Females More Males
Contra Costa County
Tract 321102
100%50%0%50%M:FFM85+80-8475-7970-7467-6965-6662-6460-6155-5950-5445-4940-4435-3930-3425-2922-242118-1915-1710-145-90-4-104.956103%10.526316%10.526316%10.5%1.1051.1147.500%47.5%52.500%52.5%-34.850922%44.000000%44.000000%44.0%1.4401.4440.984%41.0%59.016%59.0%-19.875882%0.877193%0.877193%0.9%1.0091.0149.782%49.8%50.218%50.2%-20.405039%29.411765%29.411765%29.4%1.2941.2943.590%43.6%56.410%56.4%-12.967174%9.677419%9.677419%9.7%1.0971.1047.692%47.7%52.308%52.3%-19.348534%7.692308%7.692308%7.7%1.0771.0848.148%48.1%51.852%51.9%-18.648542%1.639344%1.639344%1.6%1.0161.0249.593%49.6%50.407%50.4%-7.289433%41.958042%41.958042%42.0%1.4201.4241.329%41.3%58.671%58.7%-38.571429%-4.886987%-38.571429%38.6%0.7220.7258.084%58.1%41.916%41.9%-75.132275%-5.247799%-75.132275%75.1%0.5710.5763.654%63.7%36.346%36.3%-24.537037%-4.720760%-24.537037%24.5%0.8030.8055.464%55.5%44.536%44.5%-6.791227%56.578947%56.578947%56.6%1.5661.5738.974%39.0%61.026%61.0%-33.986928%-3.722438%-33.986928%34.0%0.7460.7557.263%57.3%42.737%42.7%-14.678899%-2.768609%-14.678899%14.7%0.8720.8753.419%53.4%46.581%46.6%22.413793%1.750344%22.413793%22.4%1.2241.2244.961%45.0%55.039%55.0%-1.114370%4.237288%4.237288%4.2%1.0421.0448.963%49.0%51.037%51.0%-73.684211%-73.684211%73.7%10.679763%0.5760.5863.462%63.5%36.538%36.5%-5.882353%-5.882353%5.9%7.687480%0.9440.9451.429%51.4%48.571%48.6%86.274510%5.632923%86.274510%86.3%1.8631.8634.932%34.9%65.068%65.1%-102.586207%-102.586207%102.6%8.254349%0.4940.4966.952%67.0%33.048%33.0%-0.351848%41.610738%41.610738%41.6%1.4161.4241.389%41.4%58.611%58.6%-2.083333%-2.083333%2.1%3.499969%0.9800.9850.515%50.5%49.485%49.5%
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 Block Group in Tract 321102

Children Age Cohorts by Block Group#5

Percentage of population aged 0 to 17 (%):
15.3%16.4%17.3%18.3%19.3%20.4%

College Age Cohorts by Block Group#6

Percentage of population aged 18 to 21 (%):
1.0%1.9%2.9%3.8%4.8%5.7%

20s Age Cohorts by Block Group#7

Percentage of population aged 22 to 29 (%):
6.9%7.7%8.5%9.3%10.0%10.9%

30s Age Cohorts by Block Group#8

Percentage of population aged 30 to 39 (%):
3.1%5.7%8.3%10.8%13.4%16.0%

40s Age Cohorts by Block Group#9

Percentage of population aged 40 to 49 (%):
7.9%10.9%13.9%17.0%20.0%23.0%

50s Age Cohorts by Block Group#10

Percentage of population aged 50 to 59 (%):
15.9%16.7%17.3%18.0%18.6%19.4%

60s Age Cohorts by Block Group#11

Percentage of population aged 60 to 69 (%):
11.0%14.6%18.2%21.7%25.2%28.8%

70s Age Cohorts by Block Group#12

Percentage of population aged 70 to 79 (%):
4.2%5.7%7.3%8.8%10.3%11.9%

80+ Age Cohorts by Block Group#13

Percentage of population aged 80 and older (%):
0.8%1.6%2.4%3.1%3.9%4.7%
Road Data ©OpenStreetMap

Loading...

Failed to load :-(

Map of Age Cohorts by Block in Tract 321102

Children Age Cohorts by Block#14

Percentage of population aged 0 to 17 (%):
0%10%20%30%40%50%

College Age Cohorts by Block#15

Percentage of population aged 18 to 21 (%):
0%6%11%17%23%29%

20s Age Cohorts by Block#16

Percentage of population aged 22 to 29 (%):
0%7%13%20%27%34%

30s Age Cohorts by Block#17

Percentage of population aged 30 to 39 (%):
0%7%15%22%29%37%

40s Age Cohorts by Block#18

Percentage of population aged 40 to 49 (%):
0%10%20%30%40%50%

50s Age Cohorts by Block#19

Percentage of population aged 50 to 59 (%):
0%13%27%40%53%67%

60s Age Cohorts by Block#20

Percentage of population aged 60 to 69 (%):
0%20%40%60%80%100%

70s Age Cohorts by Block#21

Percentage of population aged 70 to 79 (%):
0%7%13%20%27%34%

80+ Age Cohorts by Block#22

Percentage of population aged 80 and older (%):
0%10%20%30%40%50%
Road Data ©OpenStreetMap

Loading...

Failed to load :-(

Age Cohorts by Tract in Contra Costa County

There are 208 tracts in Contra Costa County. This section compares Tract 321102 to the 50 most populous tracts in Contra Costa County and to those entities that contain or substantially overlap with Tract 321102. The least populous of the compared tracts has a population of 6,827.

Children by Tract#23

Percentage of population aged 0 to 17 (%):
Scope: population of Tract 321102, selected other tracts in Contra Costa County, and entities that contain Tract 321102
0%10%20%30%40%Count#355117Tract 355117355116Tract 355116355114Tract 355114355115Tract 355115314104Tract 314104304005Tract 304005303103Tract 303103346204Tract 346204303201Tract 303201302008Tract 302008336102Tract 336102303102Tract 303102302009Tract 302009377000Tract 377000303203Tract 303203303202Tract 303202302007Tract 302007314200Tract 314200302010Tract 302010381000Tract 381000355108Tract 355108355200Tract 355200355301Tract 355301345202Tract 345202313101Tract 313101382000Tract 382000334200Tract 334200307205Tract 307205WestCaliforniaContra Costa CountyContra Costa345108Tract 345108Pacific331000Tract 331000369001Tract 369001United States of AmericaUnited States327000Tract 327000392200Tract 392200313103Tract 313103346201Tract 346201355109Tract 355109355304Tract 355304340002Tract 340002319000Tract 319000372000Tract 372000San Francisco, Oakland, and Hayward Metro AreaSan Francisco359203Tract 359203332000Tract 332000334004Tract 334004303205Tract 303205321101Tract 321101321102Tract 321102308001Tract 308001337200Tract 337200363000Tract 363000339002Tract 33900240.725474%40.725474%40.7%2,964139.860140%39.860140%39.9%3,135234.160674%34.160674%34.2%3,895333.642565%33.642565%33.6%2,466433.427146%33.427146%33.4%2,613532.446599%32.446599%32.4%2,476631.189494%31.189494%31.2%3,705730.994468%30.994468%31.0%2,297830.213880%30.213880%30.2%3,461929.968870%29.968870%30.0%2,5031029.486342%29.486342%29.5%2,2561129.322548%29.322548%29.3%2,6101229.087852%29.087852%29.1%2,0761328.895391%28.895391%28.9%1,9751428.861832%28.861832%28.9%2,7261528.793611%28.793611%28.8%2,0551628.011696%28.011696%28.0%1,9161727.413571%27.413571%27.4%1,9111827.318341%27.318341%27.3%3,0491926.772441%26.772441%26.8%1,8732026.722593%26.722593%26.7%3,7272125.109917%25.109917%25.1%2,5702224.932482%24.932482%24.9%2,0312324.809645%24.809645%24.8%1,9552424.786325%24.786325%24.8%1,7692524.445632%24.445632%24.4%1,8302624.375936%24.375936%24.4%1,9532723.983799%23.983799%24.0%1,6582823.760486%23.760486%23.8%17,834,66617.8M23.646283%23.646283%23.6%9,140,2839.14M23.527315%23.527315%23.5%260,665261k23.435829%23.435829%23.4%1,7532923.336041%23.336041%23.3%12,102,10512.1M23.284055%23.284055%23.3%1,7643023.245791%23.245791%23.2%1,7263123.108006%23.108006%23.1%73,612,43873.6M22.796588%22.796588%22.8%1,7643222.503050%22.503050%22.5%2,5823322.192513%22.192513%22.2%1,8263422.063666%22.063666%22.1%1,6083521.975003%21.975003%22.0%1,6003621.178615%21.178615%21.2%1,7433721.035036%21.035036%21.0%1,5733821.004902%21.004902%21.0%1,7143920.695995%20.695995%20.7%1,5764020.429183%20.429183%20.4%935,152935k20.036869%20.036869%20.0%1,4134119.297615%19.297615%19.3%1,6104219.263607%19.263607%19.3%1,4444318.004982%18.004982%18.0%1,5184417.638225%17.638225%17.6%1,2924517.533324%17.533324%17.5%1,1974617.437464%17.437464%17.4%1,1994717.184801%17.184801%17.2%1,3934816.803167%16.803167%16.8%1,2314913.307494%13.307494%13.3%92750
Count number of children
# rank of tract 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.

More Topics to Explore

Demographics

Income

Education

More Maps to Explore

State:
California
County:
Contra Costa
Metro Area:
San Francisco Area
Cities:
Martinez, Pleasant Hill
Unincorporated Place:
Pacheco
ZIP Codes:
94523, 94553
Unified School Districts:
Martinez, Mount Diablo
Congressional District:
CA-11
State Senate Districts:
CA-3, CA-7
Assembly District:
CA-14
Block Groups:
Block Group 321102-1, Block Group 321102-2, Block Group 321102-3, Block Group 321102-4
Neighboring Tracts:
Tract 321101, Tract 321103, Tract 321200, Tract 322000