Age and Sex in Block Group 348000-2, Contra Costa County, California (Block Group)

Age Structure#1

Percentage in each age cohort per year of age.1 Gray areas represent percentile bands from the block groups in Contra Costa County.
Scope: population of Contra Costa County, Block Group 348000-2, and other block groups in Contra Costa County
Block Group 348000-2
Contra Costa County
Percentile:
0th - 100th
10th - 90th
20th - 80th
30th - 70th
40th - 60th
0.0%0.5%1.0%1.5%2.0%Count%85+80-8475-7970-7467-6965-6662-6460-6155-5950-5445-4940-4435-3930-3425-2922-24212018-1915-1710-145-90-41004.815%4.81%502.407%2.41%673.226%3.23%783.755%3.76%1376.596%6.60%442.118%2.12%552.648%2.65%321.541%1.54%1316.307%6.31%1848.859%8.86%22310.737%10.7%1045.007%5.01%502.407%2.41%653.130%3.13%502.407%2.41%763.659%3.66%120.578%0.58%150.722%0.72%432.070%2.07%1336.403%6.40%1667.992%7.99%2009.629%9.63%622.985%2.99%
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 Block Group 348000-2
Female Male
Contra Costa County
Block Group 348000-2
Shaded bar tips show excess over facing bar.
0.5%0.0%0.5%Count%Senior2Older Adult3Younger Adult4College5Children6-0.300915%-0.172277%-0.049986%-0.300915%0.30%0.300915%0.034772%0.172277%0.335687%0.34%47622.918%22.9%-0.683678%-0.036591%-0.670276%-0.045566%-0.720270%0.72%0.683678%0.670276%0.683678%0.68%72935.099%35.1%-0.299577%-0.628773%-0.009768%-0.299577%0.30%0.299577%0.045472%0.628773%0.345049%0.35%24111.603%11.6%-0.324988%-0.192585%-0.570030%-0.517573%0.52%0.324988%0.570030%0.061105%0.324988%0.32%703.370%3.37%-0.676724%-0.147114%-0.640462%-0.823838%0.82%0.676724%0.640462%0.026150%0.676724%0.68%56127.010%27.0%
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 Block Group 348000-2
Female Male
Contra Costa County
Block Group 348000-2
Shaded bar tips show excess over facing bar.
1.0%0.5%0.0%0.5%1.0%Count%85+80-8475-7970-7467-6965-6662-6460-6155-5950-5445-4940-4435-3930-3425-2922-24212018-1915-1710-145-90-4-0.129393%-0.042128%-0.039838%-0.041812%-0.171521%0.17%0.129393%0.039838%0.129393%0.13%1004.815%4.81%-0.231103%-0.019259%-0.145912%-0.050852%-0.250361%0.25%0.231103%0.145912%0.231103%0.23%502.407%2.41%-0.317766%-0.009629%-0.212343%-0.042205%-0.327395%0.33%0.317766%0.212343%0.317766%0.32%673.226%3.23%-0.327395%-0.306627%-0.062567%-0.327395%0.33%0.327395%0.096293%0.306627%0.423688%0.42%783.755%3.76%-0.754293%-0.423434%-0.054907%-0.754293%0.75%0.754293%0.690098%0.423434%1.444391%1.44%1376.596%6.60%-0.409244%-0.240732%-0.484915%-0.093824%-0.649976%0.65%0.409244%0.484915%0.409244%0.41%442.118%2.12%-0.433317%-0.016049%-0.535626%-0.099886%-0.449366%0.45%0.433317%0.535626%0.433317%0.43%552.648%2.65%-0.216659%-0.589390%-0.042963%-0.216659%0.22%0.216659%0.337025%0.589390%0.553683%0.55%321.541%1.54%-0.481464%-0.298507%-0.674865%-0.032981%-0.779971%0.78%0.481464%0.674865%0.481464%0.48%1316.307%6.31%-0.818488%-0.134810%-0.736133%-0.038631%-0.953298%0.95%0.818488%0.736133%0.818488%0.82%1848.859%8.86%-1.011074%-0.716601%-0.033829%-1.011074%1.01%1.011074%0.125181%0.716601%1.136254%1.14%22310.737%10.7%-0.500722%-0.666652%-0.045274%-0.500722%0.50%0.500722%0.000000%0.666652%0.500722%0.50%1045.007%5.01%-0.221473%-0.645946%-0.024045%-0.221473%0.22%0.221473%0.038517%0.645946%0.259990%0.26%502.407%2.41%-0.269620%-0.086663%-0.634411%-0.017564%-0.356283%0.36%0.269620%0.634411%0.269620%0.27%653.130%3.13%-0.096293%-0.288878%-0.603326%-0.385171%0.39%0.096293%0.603326%0.010560%0.096293%0.10%502.407%2.41%-0.192585%-0.615565%-0.006860%-0.192585%0.19%0.192585%0.834537%0.615565%1.027122%1.03%763.659%3.66%-0.000000%-0.578920%0.000000%0.00%0.000000%0.577756%0.578920%0.061827%0.577756%0.58%120.578%0.58%-0.000000%-0.550579%0.000000%0.00%0.000000%0.722195%0.550579%0.094140%0.722195%0.72%150.722%0.72%-0.000000%-1.035147%-0.575310%-1.035147%1.04%0.000000%0.575310%0.044227%0.000000%0.00%432.070%2.07%-0.834537%-0.465415%-0.674053%-1.299952%1.30%0.834537%0.674053%0.037969%0.834537%0.83%1336.403%6.40%-0.731825%-0.647553%-0.731825%0.73%0.731825%0.134810%0.647553%0.053451%0.866635%0.87%1667.992%7.99%-0.635532%-0.654791%-0.672103%-0.002365%-1.290323%1.29%0.635532%0.672103%0.635532%0.64%2009.629%9.63%-0.163698%-0.579209%-0.163698%0.16%0.163698%0.269620%0.579209%0.020272%0.433317%0.43%622.985%2.99%
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 Block Group 348000-2
More Females More Males
Contra Costa County
Block Group 348000-2
1,000%500%0%M:FFM85+80-8475-7970-7467-6965-6662-6460-6155-5950-5445-4940-4435-3930-3425-2922-2418-1915-1710-145-90-4-32.558140%-104.956103%-32.558140%32.6%0.7540.7557.000%57.0%43.000%43.0%-8.333333%-34.850922%-8.333333%8.3%0.9230.9252.000%52.0%48.000%48.0%-3.030303%-19.875882%-3.030303%3.0%0.9710.9750.746%50.7%49.254%49.3%-20.405039%29.411765%29.411765%29.4%1.2941.2943.590%43.6%56.410%56.4%-12.967174%91.489362%91.489362%91.5%1.9151.9134.307%34.3%65.693%65.7%-58.823529%-19.348534%-58.823529%58.8%0.6300.6361.364%61.4%38.636%38.6%-3.703704%-18.648542%-3.703704%3.7%0.9640.9650.909%50.9%49.091%49.1%-7.289433%155.555556%155.555556%155.6%2.5562.5628.125%28.1%71.875%71.9%-62.000000%-4.886987%-62.000000%62.0%0.6170.6261.832%61.8%38.168%38.2%-16.470588%-5.247799%-16.470588%16.5%0.8590.8653.804%53.8%46.196%46.2%-4.720760%12.380952%12.380952%12.4%1.1241.1247.085%47.1%52.915%52.9%0.000000%-6.791227%0.000000%0.0%1.0001.0050.000%50.0%50.000%50.0%-3.722438%17.391304%17.391304%17.4%1.1741.1746.000%46.0%54.000%54.0%-32.142857%-2.768609%-32.142857%32.1%0.7570.7656.923%56.9%43.077%43.1%-300.000000%-300.000000%300.0%1.750344%0.2500.2580.000%80.0%20.000%20.0%-1.114370%433.333333%433.333333%433.3%5.3335.3315.789%15.8%84.211%84.2%-1,000.000000%-1,000.000000%> 1000%7.687480%0.0000100.000%100%0.000%0%-55.769231%-55.769231%55.8%5.632923%0.6420.6460.902%60.9%39.098%39.1%18.421053%8.254349%18.421053%18.4%1.1841.1845.783%45.8%54.217%54.2%-103.030303%-0.351848%-103.030303%103.0%0.4930.4967.000%67.0%33.000%33.0%164.705882%3.499969%164.705882%164.7%2.6472.6527.419%27.4%72.581%72.6%
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 in Block Group 348000-2

Children Age Cohorts by Block#5

Percentage of population aged 0 to 17 (%):
0%12%24%36%48%61%

College Age Cohorts by Block#6

Percentage of population aged 18 to 21 (%):
0.0%1.8%3.6%5.4%7.1%9.0%

20s Age Cohorts by Block#7

Percentage of population aged 22 to 29 (%):
0.0%4.0%8.0%12.0%16.0%20.0%

30s Age Cohorts by Block#8

Percentage of population aged 30 to 39 (%):
0.0%4.0%8.0%12.0%16.0%20.0%

40s Age Cohorts by Block#9

Percentage of population aged 40 to 49 (%):
0%8%16%24%32%40%

50s Age Cohorts by Block#10

Percentage of population aged 50 to 59 (%):
12%18%24%29%35%40%

60s Age Cohorts by Block#11

Percentage of population aged 60 to 69 (%):
0.0%3.6%7.1%10.7%14.3%17.9%

70s Age Cohorts by Block#12

Percentage of population aged 70 to 79 (%):
0.0%3.2%6.4%9.6%12.9%16.1%

80+ Age Cohorts by Block#13

Percentage of population aged 80 and older (%):
0.0%3.6%7.2%10.8%14.4%18.0%
Road Data ©OpenStreetMap

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Age Cohorts by Block Group in Contra Costa County

There are 637 block groups in Contra Costa County. This section compares Block Group 348000-2 to the 50 most populous block groups in Contra Costa County and to those entities that contain or substantially overlap with Block Group 348000-2. The least populous of the compared block groups has a population of 2,991.

Children by Block Group#14

Percentage of population aged 0 to 17 (%):
Scope: population of Block Group 348000-2, selected other block groups in Contra Costa County, and entities that contain Block Group 348000-2
0%10%20%30%40%Count#355117-1B.G. 355117-1355116-1B.G. 355116-1314104-2B.G. 314104-2303201-1B.G. 303201-1303102-2B.G. 303102-2310000-3B.G. 310000-3303103-4B.G. 303103-4355114-3B.G. 355114-3355115-1B.G. 355115-1336202-1B.G. 336202-1304005-1B.G. 304005-1302009-2B.G. 302009-2302008-2B.G. 302008-2345202-1B.G. 345202-1345105-1B.G. 345105-1302010-4B.G. 302010-4304001-1B.G. 304001-1345112-2B.G. 345112-2346204-1B.G. 346204-1345114-3B.G. 345114-3355108-3B.G. 355108-3303203-1B.G. 303203-1302010-1B.G. 302010-1355108-2B.G. 355108-2303201-3B.G. 303201-3382000-2B.G. 382000-2302007-1B.G. 302007-1346201-3B.G. 346201-3348000-2B.G. 348000-2348000Tract 348000303201-2B.G. 303201-2Lafayette303102-1B.G. 303102-1345115-1B.G. 345115-1355200-2B.G. 355200-2392300-1B.G. 392300-1Lafayette Elementary School DistrictLafayette355109-3B.G. 355109-3355301-1B.G. 355301-1302009-1B.G. 302009-1ZIP Code 94549ZIP 94549352201-1B.G. 352201-1355111-1B.G. 355111-1303205-2B.G. 303205-2West308002-1B.G. 308002-1CaliforniaContra Costa CountyContra Costa359105-1B.G. 359105-1Pacific355108-1B.G. 355108-1392200-2B.G. 392200-2United States of AmericaUnited States355107-1B.G. 355107-1338101-3B.G. 338101-3320004-1B.G. 320004-1San Francisco, Oakland, and Hayward Metro AreaSan FranciscoAcalanes Union High School DistrictAcalanes313103-1B.G. 313103-1355109-1B.G. 355109-1303205-1B.G. 303205-1380000-1B.G. 380000-140.725474%40.725474%40.7%2,964139.860140%39.860140%39.9%3,135238.767209%38.767209%38.8%1,239336.385038%36.385038%36.4%1,391436.334197%36.334197%36.3%1,122536.039206%36.039206%36.0%1,434635.333175%35.333175%35.3%1,490733.931286%33.931286%33.9%2,232833.642565%33.642565%33.6%2,466933.398247%33.398247%33.4%1,0291032.955924%32.955924%33.0%1,6301132.380254%32.380254%32.4%1,3251231.576116%31.576116%31.6%1,7611331.138190%31.138190%31.1%1,2011430.667402%30.667402%30.7%1,1121530.615851%30.615851%30.6%1,2131630.308571%30.308571%30.3%1,3261729.728959%29.728959%29.7%1,0421829.561805%29.561805%29.6%9041929.285015%29.285015%29.3%8972028.937644%28.937644%28.9%1,2532128.861832%28.861832%28.9%2,7262228.753994%28.753994%28.8%1,0802328.097660%28.097660%28.1%1,3812428.007304%28.007304%28.0%1,2272527.656345%27.656345%27.7%9112627.485527%27.485527%27.5%1,0922727.131527%27.131527%27.1%8212827.010111%27.010111%27.0%56126.367750%26.367750%26.4%1,28225.930483%25.930483%25.9%8432925.700327%25.700327%25.7%6,52325.597798%25.597798%25.6%1,4883025.559339%25.559339%25.6%1,0513125.509550%25.509550%25.5%1,9903225.419591%25.419591%25.4%8333325.294016%25.294016%25.3%7,29125.138753%25.138753%25.1%7703425.120482%25.120482%25.1%8343524.663383%24.663383%24.7%7513624.650922%24.650922%24.7%7,15024.539683%24.539683%24.5%7733724.226534%24.226534%24.2%9243824.132597%24.132597%24.1%1,0923923.760486%23.760486%23.8%17,834,66617.8M23.740053%23.740053%23.7%7164023.646283%23.646283%23.6%9,140,2839.14M23.527315%23.527315%23.5%260,665261k23.346715%23.346715%23.3%1,1054123.336041%23.336041%23.3%12,102,10512.1M23.245427%23.245427%23.2%1,0934223.149582%23.149582%23.1%1,4954323.108006%23.108006%23.1%73,612,43873.6M21.903732%21.903732%21.9%8104421.297225%21.297225%21.3%6374520.989305%20.989305%21.0%6284620.429183%20.429183%20.4%935,152935k20.139820%20.139820%20.1%23,27723.3k20.092825%20.092825%20.1%1,0394719.469526%19.469526%19.5%6904810.906298%10.906298%10.9%426498.657394%8.657394%8.7%30550
Count number of children
# rank of block group 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
City:
Lafayette
ZIP Code:
94549
Elementary School District:
Lafayette
Secondary School District:
Acalanes
Congressional District:
CA-11
State Senate District:
CA-7
Assembly District:
CA-16
Neighboring Block Groups:
Block Group 354002-1, Block Group 350000-1, Block Group 353002-1, Block Group 350000-2, Block Group 348000-3, Block Group 350000-4