Age and Sex in Rochester Community Unit School District 3A, Illinois (Unified School District)

Age Structure#1

Percentage in each age cohort per year of age.1 Gray areas represent percentile bands from the unified school districts in Illinois.
Scope: population of Illinois, Rochester Community Unit School District 3A, and other unified school districts in Illinois
Rochester 3A
Illinois
Percentile:
0th - 100th
10th - 90th
20th - 80th
30th - 70th
40th - 60th
0.0%0.5%1.0%1.5%2.0%Count%85+80-8475-7970-7467-6965-6662-6460-6155-5950-5445-4940-4435-3930-3425-2922-24212018-1915-1710-145-90-41331.264%1.26%1181.121%1.12%2132.024%2.02%1911.815%1.82%3743.554%3.55%3463.288%3.29%4214.001%4.00%3152.993%2.99%6506.177%6.18%9358.885%8.89%8758.315%8.32%7256.890%6.89%7056.700%6.70%5815.521%5.52%3213.050%3.05%1691.606%1.61%1121.064%1.06%980.931%0.93%1641.558%1.56%5455.179%5.18%1,08910.349%10.3%9338.866%8.87%5104.847%4.85%
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 Illinois and Rochester Community Unit School District 3A
Female Male
Illinois
Rochester 3A
Shaded bar tips show excess over facing bar.
0.5%0.0%0.5%Count%Senior2Older Adult3Younger Adult4College5Children6-0.180029%-0.165938%-0.053741%-0.180029%0.18%0.180029%0.002904%0.165938%0.182933%0.18%1,37513.067%13.1%-0.709684%-0.071082%-0.644483%-0.024551%-0.780766%0.78%0.709684%0.644483%0.709684%0.71%3,92137.261%37.3%-0.436082%-0.065465%-0.675790%-0.501547%0.50%0.436082%0.675790%0.008914%0.436082%0.44%1,77616.877%16.9%-0.308847%-0.674894%-0.308847%0.31%0.308847%0.270835%0.674894%0.030373%0.579683%0.58%3743.554%3.55%-0.777134%-0.633316%-0.777134%0.78%0.777134%0.070217%0.633316%0.026163%0.847350%0.85%3,07729.241%29.2%
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 Illinois and Rochester Community Unit School District 3A
Female Male
Illinois
Rochester 3A
Shaded bar tips show excess over facing bar.
1.0%0.5%0.0%0.5%1.0%Count%85+80-8475-7970-7467-6965-6662-6460-6155-5950-5445-4940-4435-3930-3425-2922-24212018-1915-1710-145-90-4-0.024351%-0.030291%-0.039174%-0.042517%-0.054642%0.05%0.024351%0.039174%0.024351%0.02%1331.264%1.26%-0.072223%-0.079825%-0.144845%-0.068886%-0.152048%0.15%0.072223%0.144845%0.072223%0.07%1181.121%1.12%-0.193861%-0.203849%-0.066811%-0.193861%0.19%0.193861%0.017105%0.203849%0.210966%0.21%2132.024%2.02%-0.155849%-0.051316%-0.300244%-0.059206%-0.207165%0.21%0.155849%0.300244%0.155849%0.16%1911.815%1.82%-0.535335%-0.387742%-0.055373%-0.535335%0.54%0.535335%0.114036%0.387742%0.649371%0.65%3743.554%3.55%-0.617695%-0.469530%-0.056884%-0.617695%0.62%0.617695%0.408629%0.469530%1.026323%1.03%3463.288%3.29%-0.646204%-0.534885%-0.040654%-0.646204%0.65%0.646204%0.041180%0.534885%0.687383%0.69%4214.001%4.00%-0.688967%-0.118787%-0.604325%-0.042815%-0.807754%0.81%0.688967%0.604325%0.688967%0.69%3152.993%2.99%-0.617695%-0.651709%-0.040054%-0.617695%0.62%0.617695%0.000000%0.651709%0.617695%0.62%6506.177%6.18%-0.847667%-0.081726%-0.695837%-0.024594%-0.929393%0.93%0.847667%0.695837%0.847667%0.85%9358.885%8.89%-0.714625%-0.661607%-0.012616%-0.714625%0.71%0.714625%0.233774%0.661607%0.948399%0.95%8758.315%8.32%-0.446641%-0.484653%-0.650601%-0.003975%-0.931293%0.93%0.446641%0.650601%0.446641%0.45%7256.890%6.89%-0.594887%-0.647538%-0.002309%-0.594887%0.59%0.594887%0.150147%0.647538%0.745035%0.75%7056.700%6.70%-0.534068%-0.036111%-0.690067%-0.570180%0.57%0.534068%0.690067%0.002213%0.534068%0.53%5815.521%5.52%-0.224271%-0.161551%-0.685705%-0.385822%0.39%0.224271%0.685705%0.016743%0.224271%0.22%3213.050%3.05%-0.110868%-0.313599%-0.678707%-0.424467%0.42%0.110868%0.678707%0.025737%0.110868%0.11%1691.606%1.61%-0.275587%-0.706227%-0.275587%0.28%0.275587%0.513162%0.706227%0.013204%0.788748%0.79%1121.064%1.06%-0.228072%-0.686439%-0.228072%0.23%0.228072%0.475150%0.686439%0.037349%0.703222%0.70%980.931%0.93%-0.365865%-0.653455%-0.365865%0.37%0.365865%0.047515%0.653455%0.035470%0.413380%0.41%1641.558%1.56%-0.715892%-0.661483%-0.715892%0.72%0.715892%0.294593%0.661483%0.027369%1.010485%1.01%5455.179%5.18%-0.936995%-0.195762%-0.649229%-1.132757%1.13%0.936995%0.649229%0.024833%0.936995%0.94%1,08910.349%10.3%-0.771643%-0.631827%-0.771643%0.77%0.771643%0.229972%0.631827%0.027192%1.001616%1.00%9338.866%8.87%-0.463746%-0.601994%-0.463746%0.46%0.463746%0.041813%0.601994%0.025741%0.505559%0.51%5104.847%4.85%
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 Illinois and Rochester Community Unit School District 3A
More Females More Males
Illinois
Rochester 3A
200%100%0%100%200%M:FFM85+80-8475-7970-7467-6965-6662-6460-6155-5950-5445-4940-4435-3930-3425-2922-24212018-1915-1710-145-90-4-124.390244%-108.533512%-124.390244%124.4%0.4460.4569.173%69.2%30.827%30.8%-110.526316%-47.558421%-110.526316%110.5%0.4750.4867.797%67.8%32.203%32.2%-32.775021%8.823529%8.823529%8.8%1.0881.0947.887%47.9%52.113%52.1%-32.926829%-19.719383%-32.926829%32.9%0.7520.7557.068%57.1%42.932%42.9%-14.280841%21.301775%21.301775%21.3%1.2131.2145.187%45.2%54.813%54.8%-12.115010%66.153846%66.153846%66.2%1.6621.6637.572%37.6%62.428%62.4%-7.600436%6.372549%6.372549%6.4%1.0641.0648.456%48.5%51.544%51.5%-17.241379%-7.084825%-17.241379%17.2%0.8530.8553.968%54.0%46.032%46.0%0.000000%-6.145977%0.000000%0.0%1.0001.0050.000%50.0%50.000%50.0%-9.641256%-3.534511%-9.641256%9.6%0.9120.9152.299%52.3%47.701%47.7%-1.906910%32.712766%32.712766%32.7%1.3271.3342.971%43.0%57.029%57.0%-108.510638%-0.610908%-108.510638%108.5%0.4800.4867.586%67.6%32.414%32.4%-0.356647%25.239617%25.239617%25.2%1.2521.2544.397%44.4%55.603%55.6%-6.761566%-6.761566%6.8%0.320685%0.9370.9451.635%51.6%48.365%48.4%-72.033898%-72.033898%72.0%2.441770%0.5810.5863.240%63.2%36.760%36.8%-282.857143%-282.857143%282.9%3.792094%0.2610.2679.290%79.3%20.710%20.7%186.206897%1.869725%186.206897%186.2%2.8622.8625.893%25.9%74.107%74.1%208.333333%5.441005%208.333333%208.3%3.0833.0824.490%24.5%75.510%75.5%12.987013%5.428078%12.987013%13.0%1.1301.1346.951%47.0%53.049%53.0%41.150442%4.137471%41.150442%41.2%1.4121.4141.468%41.5%58.532%58.5%-20.892495%-20.892495%20.9%3.824931%0.8270.8354.729%54.7%45.271%45.3%29.802956%4.303673%29.802956%29.8%1.2981.3043.516%43.5%56.484%56.5%9.016393%4.276016%9.016393%9.0%1.0901.0947.843%47.8%52.157%52.2%
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 Rochester Community Unit School District 3A

Children Age Cohorts by County Subdivision#5

Percentage of population aged 0 to 17 (%):
14.5%17.2%19.8%22.4%25.0%27.7%

College Age Cohorts by County Subdivision#6

Percentage of population aged 18 to 21 (%):
1.7%2.7%3.7%4.7%5.7%6.7%

20s Age Cohorts by County Subdivision#7

Percentage of population aged 22 to 29 (%):
3.4%5.0%6.6%8.2%9.7%11.4%

30s Age Cohorts by County Subdivision#8

Percentage of population aged 30 to 39 (%):
4.2%6.6%8.9%11.2%13.5%15.9%

40s Age Cohorts by County Subdivision#9

Percentage of population aged 40 to 49 (%):
7.9%10.2%12.4%14.6%16.7%19.0%

50s Age Cohorts by County Subdivision#10

Percentage of population aged 50 to 59 (%):
14.5%15.4%16.3%17.2%18.1%19.1%

60s Age Cohorts by County Subdivision#11

Percentage of population aged 60 to 69 (%):
11.1%13.2%15.2%17.3%19.3%21.4%

70s Age Cohorts by County Subdivision#12

Percentage of population aged 70 to 79 (%):
4.5%6.5%8.4%10.4%12.3%14.3%

80+ Age Cohorts by County Subdivision#13

Percentage of population aged 80 and older (%):
1.1%1.8%2.5%3.2%3.9%4.7%
Road Data ©OpenStreetMap

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Map of Age Cohorts by Tract in Rochester Community Unit School District 3A

Children Age Cohorts by Tract#14

Percentage of population aged 0 to 17 (%):
20.7%22.4%24.0%25.6%27.3%28.9%

College Age Cohorts by Tract#15

Percentage of population aged 18 to 21 (%):
2.7%3.9%5.0%6.1%7.1%8.3%

20s Age Cohorts by Tract#16

Percentage of population aged 22 to 29 (%):
3.3%4.8%6.2%7.7%9.1%10.6%

30s Age Cohorts by Tract#17

Percentage of population aged 30 to 39 (%):
8.0%9.1%10.2%11.2%12.3%13.4%

40s Age Cohorts by Tract#18

Percentage of population aged 40 to 49 (%):
11.1%12.4%13.6%14.8%16.0%17.2%

50s Age Cohorts by Tract#19

Percentage of population aged 50 to 59 (%):
15.2%16.0%16.8%17.6%18.3%19.2%

60s Age Cohorts by Tract#20

Percentage of population aged 60 to 69 (%):
9.9%11.0%12.1%13.1%14.1%15.2%

70s Age Cohorts by Tract#21

Percentage of population aged 70 to 79 (%):
3.4%4.4%5.4%6.3%7.3%8.3%

80+ Age Cohorts by Tract#22

Percentage of population aged 80 and older (%):
1.65%2.10%2.55%3.00%3.45%3.90%
Road Data ©OpenStreetMap

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Map of Age Cohorts by Block Group in Rochester Community Unit School District 3A

Children Age Cohorts by Block Group#23

Percentage of population aged 0 to 17 (%):
9.7%14.5%19.2%23.9%28.5%33.3%

College Age Cohorts by Block Group#24

Percentage of population aged 18 to 21 (%):
1.0%2.1%3.2%4.3%5.4%6.6%

20s Age Cohorts by Block Group#25

Percentage of population aged 22 to 29 (%):
0.0%2.8%5.6%8.4%11.3%14.1%

30s Age Cohorts by Block Group#26

Percentage of population aged 30 to 39 (%):
3.2%7.4%11.5%15.6%19.7%23.9%

40s Age Cohorts by Block Group#27

Percentage of population aged 40 to 49 (%):
3.5%7.7%11.8%16.0%20.1%24.3%

50s Age Cohorts by Block Group#28

Percentage of population aged 50 to 59 (%):
13.7%16.4%19.0%21.7%24.3%27.0%

60s Age Cohorts by Block Group#29

Percentage of population aged 60 to 69 (%):
8.9%12.1%15.2%18.4%21.5%24.7%

70s Age Cohorts by Block Group#30

Percentage of population aged 70 to 79 (%):
1.5%4.2%6.8%9.5%12.2%14.9%

80+ Age Cohorts by Block Group#31

Percentage of population aged 80 and older (%):
0.0%1.0%2.0%3.1%4.1%5.1%
Road Data ©OpenStreetMap

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Age Cohorts by Place in Rochester Community Unit School District 3A

There are 2 places that are fully or partially contained within Rochester Community Unit School District 3A (1 fully and 1 partially). This section compares all 2 of those to each other, Rochester Community Unit School District 3A, and other entities that contain or substantially overlap with Rochester Community Unit School District 3A.

Children by Place#32

Percentage of population aged 0 to 17 (%):
Scope: population of Rochester Community Unit School District 3A, selected places in Rochester Community Unit School District 3A, and entities that contain Rochester Community Unit School District 3A
0%10%20%30%Count#RochesterRochester Community Unit School District 3ARochester 3AIllinoisMidwestUnited States of AmericaUnited StatesEast North CentralSpringfield30.377000%30.377000%30.4%1,120129.240711%29.240711%29.2%3,07723.270328%23.270328%23.3%2,990,6292.99M23.217458%23.217458%23.2%15,712,75815.7M23.108006%23.108006%23.1%73,612,43873.6M23.005234%23.005234%23.0%10,741,74210.7M22.468628%22.468628%22.5%26,23126.2k2
Count number of children
# rank of place out of 2 by %

Age Cohorts by County Subdivision in Rochester Community Unit School District 3A

There are 6 county subdivisions that are fully or partially contained within Rochester Community Unit School District 3A (0 fully and 6 partially). This section compares all 6 of those to each other, Rochester Community Unit School District 3A, and other entities that contain or substantially overlap with Rochester Community Unit School District 3A.

Children by County Subdivision#41

Percentage of population aged 0 to 17 (%):
Scope: population of Rochester Community Unit School District 3A, selected county subdivisions in Rochester Community Unit School District 3A, and entities that contain Rochester Community Unit School District 3A
0%10%20%Count#Rochester Community Unit School District 3ARochester 3ARochester TownshipRochesterClear Lake TownshipClear LkIllinoisMidwestUnited States of AmericaUnited StatesEast North CentralCapital TownshipCapitalMount Auburn TownshipMt AuburnCotton Hill TownshipCotton HlCooper TownshipCooper29.240711%29.240711%29.2%3,07727.610294%27.610294%27.6%1,502124.326867%24.326867%24.3%2,069223.270328%23.270328%23.3%2,990,6292.99M23.217458%23.217458%23.2%15,712,75815.7M23.108006%23.108006%23.1%73,612,43873.6M23.005234%23.005234%23.0%10,741,74210.7M22.459425%22.459425%22.5%26,15426.2k321.785335%21.785335%21.8%205418.714122%18.714122%18.7%163514.542936%14.542936%14.5%1056
Count number of children
# rank of county subdivision out of 6 by %

Age Cohorts by Unified School District in Illinois

There are 853 unified school districts in Illinois. This section compares Rochester Community Unit School District 3A to the 50 most populous unified school districts in Illinois and to those entities that contain or substantially overlap with Rochester Community Unit School District 3A. The least populous of the compared unified school districts has a population of 66,026.

Children by Unified School District#50

Percentage of population aged 0 to 17 (%):
Scope: population of Rochester Community Unit School District 3A, selected other unified school districts in Illinois, and entities that contain Rochester Community Unit School District 3A
0%10%20%30%Count#Cicero School District 99Cicero 99Plainfield School District 202Plainfield 202Oswego Community Unit School District 308Oswego 308Aurora East Unit School District 131Aurora E 131Rochester Community Unit School District 3ARochester 3AJ. Sterling Morton High School District 201J. Sterling Morton …Indian Prairie Community Unit School District 204Indian Prairie 204Waukegan Community Unit School District 60Waukegan 60Joliet Public School District 86Joliet 86Community Unit School District 300300Warren Township High School District 121Warren Twp 121Valley View Community Unit School District 365UVly Vw 365UJoliet Township High School District 204Joliet Twp 204St. Charles Community Unit School District 303St. Charles 303Aurora West Unit School District 129Aurora W 129Lincoln Way Community High School District 210Lincoln Wy 210School District U-46U-46Lyons Township High School District 204Lyons Twp 204Bremen Community High School District 228Bremen 228Hinsdale Township High School District 86Hinsdale Twp 86Community High School District 155155Thornton Township High School District 205Thornton Twp 205Northfield Township High School District 225Northfield Twp 225Naperville Community Unit District 203Naperville 203Rockford School District 205Rockford 205Community Unit School District 200200Peoria School District 150Peoria 150Palatine Community Consolidated School District 15Palatine 15IllinoisProviso Township High School District 209Proviso Twp 209MidwestUnited States of AmericaUnited StatesTownship High School District 211Township 211East North CentralGlenbard Township High School District 87Glenbard Twp 87Community Consolidated School District 5959Wheeling Community Consolidated School District 21Wheeling 21DuPage High School District 88DuPage 88Schaumburg Community Consolidated School District 54Schaumburg 54Township High School District 214Township 214Decatur School District 61Decatur 61Springfield School District 186Springfield 186Rich Township High School District 227Rich Twp 227Lockport Township High School District 205Lockport Twp 205Community High School District 218218McLean County Unit School District 5McLean Co 5Chicago Public School District 299Chicago 299Community High School District 9999Belleville Township High School District 201Belleville Twp 201Consolidated High School District 230230Maine Township High School District 207Maine Twp 207Evanston Community Consolidated School District 65Evanston 65Evanston Township High School District 202Evanston Twp 202Niles Township Community High School District 219Niles Twp 219Champaign Community Unit School District 4Champaign 431.658172%31.658172%31.7%26,58426.6k131.061699%31.061699%31.1%37,89937.9k230.790386%30.790386%30.8%24,51924.5k330.762261%30.762261%30.8%26,82126.8k429.240711%29.240711%29.2%3,07728.654259%28.654259%28.7%45,46645.5k528.230737%28.230737%28.2%36,29436.3k627.892458%27.892458%27.9%23,18723.2k727.198854%27.198854%27.2%22,79422.8k826.966922%26.966922%27.0%30,77630.8k926.795132%26.795132%26.8%18,34118.3k1026.726733%26.726733%26.7%25,21425.2k1126.344368%26.344368%26.3%34,10734.1k1226.317696%26.317696%26.3%18,16018.2k1326.062270%26.062270%26.1%19,46219.5k1425.997072%25.997072%26.0%27,70327.7k1525.825034%25.825034%25.8%60,52260.5k1625.810159%25.810159%25.8%17,96818.0k1724.778986%24.778986%24.8%23,40423.4k1824.601499%24.601499%24.6%18,64418.6k1924.579865%24.579865%24.6%23,59223.6k2024.537853%24.537853%24.5%28,11428.1k2124.325402%24.325402%24.3%21,34721.3k2224.133104%24.133104%24.1%23,62123.6k2324.080280%24.080280%24.1%45,62945.6k2423.818258%23.818258%23.8%18,83018.8k2523.760261%23.760261%23.8%23,90923.9k2623.647057%23.647057%23.6%28,30628.3k2723.270328%23.270328%23.3%2,990,6292.99M23.238908%23.238908%23.2%29,41029.4k2823.217458%23.217458%23.2%15,712,75815.7M23.108006%23.108006%23.1%73,612,43873.6M23.035295%23.035295%23.0%54,69854.7k2923.005234%23.005234%23.0%10,741,74210.7M22.861840%22.861840%22.9%37,82437.8k3022.860691%22.860691%22.9%15,09415.1k3122.660697%22.660697%22.7%15,28615.3k3222.501745%22.501745%22.5%18,70318.7k3322.353134%22.353134%22.4%30,01430.0k3422.270597%22.270597%22.3%56,31956.3k3522.247069%22.247069%22.2%15,52015.5k3622.244835%22.244835%22.2%25,14025.1k3722.222222%22.222222%22.2%15,44215.4k3822.201031%22.201031%22.2%16,87916.9k3922.142286%22.142286%22.1%26,86926.9k4021.931758%21.931758%21.9%21,49421.5k4121.913773%21.913773%21.9%594,733595k4221.270159%21.270159%21.3%23,34423.3k4321.103504%21.103504%21.1%22,53222.5k4420.812407%20.812407%20.8%32,90432.9k4520.779958%20.779958%20.8%30,38330.4k4620.534870%20.534870%20.5%16,93116.9k4720.534870%20.534870%20.5%16,93116.9k4820.186771%20.186771%20.2%19,56319.6k4917.287672%17.287672%17.3%16,92116.9k50
Count number of children
# rank of unified school district 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:
Illinois
Counties:
Christian, Sangamon
Metro Areas:
Springfield Area, Taylorville Area
Cities:
Springfield
Townships:
Capital, Clear Lake, Cooper, Cotton Hill, Mount Auburn, Rochester
Villages:
Rochester
ZIP Codes:
62545, 62563, 62707, 62712
Congressional Districts:
IL-13, IL-18
State Senate Districts:
IL-44, IL-48
State House Districts:
IL-87, IL-96
Neighboring Unified School Districts:
Ball-Chatham 5, Edinburg 4, Riverton 14, Springfield 186, Taylorville 3, Tri-City 1
Nearby Unified School Districts:
Athens 213, Auburn 10, 16, Morrisonville 1, Mount Pulaski 23, Pawnee 11, Pleasant Plains 8, Sangamon Valley 9, South Fork 14, Williamsville 15