Age and Sex in 9th Middlesex District, Massachusetts (Lower State Legislative District)

Age Structure#1

Percentage in each age cohort per year of age.1 Gray areas represent percentile bands from the lower state legislative districts in Massachusetts.
Scope: population of Massachusetts, 9th Middlesex District, and other lower state legislative districts in Massachusetts
9th Middlesex District
Massachusetts
Percentile:
0th - 100th
10th - 90th
20th - 80th
30th - 70th
40th - 60th
0.0%0.5%1.0%1.5%Count%85+80-8475-7970-7467-6965-6662-6460-6155-5950-5445-4940-4435-3930-3425-2922-24212018-1915-1710-145-90-41,2272.962%2.96%1,0252.475%2.47%1,2983.134%3.13%1,3003.139%3.14%1,0812.610%2.61%9422.274%2.27%1,3203.187%3.19%1,2483.013%3.01%2,7906.736%6.74%2,9107.025%7.03%2,9087.021%7.02%2,5816.231%6.23%2,9637.153%7.15%3,5628.600%8.60%3,5688.614%8.61%1,8674.507%4.51%4901.183%1.18%2230.538%0.54%7901.907%1.91%1,0542.545%2.54%1,6714.034%4.03%2,1185.113%5.11%2,4855.999%6.00%

Age and Sex#2

Percentage in each age cohort per year of age.1
Scope: population of Massachusetts and 9th Middlesex District
Female Male
Massachusetts
9th Middlesex District
Shaded bar tips show excess over facing bar.
0.5%0.0%0.5%Count%Senior2Older Adult3Younger Adult4College5Children6-0.201656%-0.057606%-0.179173%-0.060528%-0.259262%0.26%0.201656%0.179173%0.201656%0.20%6,87316.593%16.6%-0.631467%-0.065571%-0.662237%-0.044052%-0.697038%0.70%0.631467%0.662237%0.631467%0.63%13,75713.8k33.213%33.2%-0.792271%-0.660381%-0.006144%-0.792271%0.79%0.792271%0.019582%0.660381%0.811853%0.81%11,96012.0k28.874%28.9%-0.432752%-0.766222%-0.017135%-0.432752%0.43%0.432752%0.041646%0.766222%0.474397%0.47%1,5033.629%3.63%-0.489955%-0.560616%-0.489955%0.49%0.489955%0.002951%0.560616%0.024588%0.492906%0.49%7,32817.692%17.7%

Detailed Age and Sex#3

Percentage in each age cohort per year of age.1
Scope: population of Massachusetts and 9th Middlesex District
Female Male
Massachusetts
9th Middlesex District
Shaded bar tips show excess over facing bar.
0.5%0.0%0.5%Count%85+80-8475-7970-7467-6965-6662-6460-6155-5950-5445-4940-4435-3930-3425-2922-24212018-1915-1710-145-90-4-0.057791%-0.069560%-0.046447%-0.050660%-0.127351%0.13%0.057791%0.046447%0.057791%0.06%1,2272.962%2.96%-0.208107%-0.078704%-0.156508%-0.083152%-0.286811%0.29%0.208107%0.156508%0.208107%0.21%1,0252.475%2.47%-0.297434%-0.031868%-0.213469%-0.064537%-0.329302%0.33%0.297434%0.213469%0.297434%0.30%1,2983.134%3.13%-0.300814%-0.316024%-0.068770%-0.300814%0.30%0.300814%0.026074%0.316024%0.326887%0.33%1,3003.139%3.14%-0.375816%-0.118297%-0.419753%-0.055660%-0.494113%0.49%0.375816%0.419753%0.375816%0.38%1,0812.610%2.61%-0.522682%-0.091741%-0.508903%-0.059595%-0.614423%0.61%0.522682%0.508903%0.522682%0.52%9422.274%2.27%-0.493309%-0.075646%-0.557414%-0.061316%-0.568955%0.57%0.493309%0.557414%0.493309%0.49%1,3203.187%3.19%-0.685643%-0.135197%-0.618023%-0.051178%-0.820840%0.82%0.685643%0.618023%0.685643%0.69%1,2483.013%3.01%-0.660535%-0.026074%-0.676577%-0.048367%-0.686608%0.69%0.660535%0.676577%0.660535%0.66%2,7906.736%6.74%-0.626735%-0.151614%-0.731910%-0.039160%-0.778349%0.78%0.626735%0.731910%0.626735%0.63%2,9107.025%7.03%-0.682263%-0.039593%-0.689914%-0.038463%-0.721856%0.72%0.682263%0.689914%0.682263%0.68%2,9087.021%7.02%-0.617561%-0.011105%-0.631126%-0.037009%-0.628667%0.63%0.617561%0.631126%0.617561%0.62%2,5816.231%6.23%-0.656672%-0.584959%-0.018190%-0.656672%0.66%0.656672%0.117332%0.584959%0.774004%0.77%2,9637.153%7.15%-0.782212%-0.656156%-0.013040%-0.782212%0.78%0.782212%0.155477%0.656156%0.937689%0.94%3,5628.600%8.60%-0.840636%-0.041525%-0.710160%-0.001522%-0.882161%0.88%0.840636%0.710160%0.840636%0.84%3,5688.614%8.61%-0.617239%-0.267980%-0.692436%-0.885219%0.89%0.617239%0.692436%0.017724%0.617239%0.62%1,8674.507%4.51%-0.395934%-0.391106%-0.752120%-0.019044%-0.787040%0.79%0.395934%0.752120%0.395934%0.40%4901.183%1.18%-0.125540%-0.776860%-0.012993%-0.125540%0.13%0.125540%0.287294%0.776860%0.412834%0.41%2230.538%0.54%-0.409213%-0.767953%-0.018251%-0.409213%0.41%0.409213%0.135197%0.767953%0.544410%0.54%7901.907%1.91%-0.389496%-0.606894%-0.389496%0.39%0.389496%0.069208%0.606894%0.030020%0.458705%0.46%1,0542.545%2.54%-0.337027%-0.579863%-0.337027%0.34%0.337027%0.132783%0.579863%0.030477%0.469810%0.47%1,6714.034%4.03%-0.498781%-0.546764%-0.498781%0.50%0.498781%0.025108%0.546764%0.016321%0.523889%0.52%2,1185.113%5.11%-0.505541%-0.188793%-0.527455%-0.694334%0.69%0.505541%0.527455%0.023708%0.505541%0.51%2,4855.999%6.00%

Detailed Sex Ratio#4

Percentage more males or females in selected age cohorts.
Scope: population of Massachusetts and 9th Middlesex District
More Females More Males
Massachusetts
9th Middlesex District
100%0%100%200%M:FFM85+80-8475-7970-7467-6965-6662-6460-6155-5950-5445-4940-4435-3930-3425-2922-24212018-1915-1710-145-90-4-120.365535%-109.071132%-120.365535%120.4%0.4540.4568.786%68.8%31.214%31.2%-37.819026%-53.129265%-37.819026%37.8%0.7260.7357.951%58.0%42.049%42.0%-10.714286%-30.232623%-10.714286%10.7%0.9030.9052.542%52.5%47.458%47.5%-21.761128%8.667737%8.667737%8.7%1.0871.0947.923%47.9%52.077%52.1%-31.477516%-13.260150%-31.477516%31.5%0.7610.7656.799%56.8%43.201%43.2%-17.551963%-11.710530%-17.551963%17.6%0.8510.8554.034%54.0%45.966%46.0%-15.334421%-11.000044%-15.334421%15.3%0.8670.8753.561%53.6%46.439%46.4%-19.718310%-8.280935%-19.718310%19.7%0.8350.8454.487%54.5%45.513%45.5%-3.947368%-7.148839%-3.947368%3.9%0.9620.9650.968%51.0%49.032%49.0%-24.191063%-5.350340%-24.191063%24.2%0.8050.8155.395%55.4%44.605%44.6%-5.803255%-5.574976%-5.803255%5.8%0.9450.9551.410%51.4%48.590%48.6%-1.798280%-5.863967%-1.798280%1.8%0.9820.9850.446%50.4%49.554%49.6%-3.109628%17.867647%17.867647%17.9%1.1791.1845.899%45.9%54.101%54.1%-1.987387%19.876543%19.876543%19.9%1.1991.2045.480%45.5%54.520%54.5%-4.939690%-0.214286%-4.939690%4.9%0.9530.9551.205%51.2%48.795%48.8%-43.415906%-43.415906%43.4%2.559709%0.6970.7058.918%58.9%41.082%41.1%-98.780488%-2.532095%-98.780488%98.8%0.5030.5066.531%66.5%33.469%33.5%-1.672490%228.846154%228.846154%228.8%3.2883.2923.318%23.3%76.682%76.7%-2.376561%33.038348%33.038348%33.0%1.3301.3342.911%42.9%57.089%57.1%17.768595%4.946519%17.768595%17.8%1.1781.1845.920%45.9%54.080%54.1%39.398281%5.255888%39.398281%39.4%1.3941.3941.771%41.8%58.229%58.2%5.033882%2.985058%5.033882%5.0%1.0501.0548.772%48.8%51.228%51.2%-37.344795%-37.344795%37.3%4.494711%0.7280.7357.867%57.9%42.133%42.1%

Map of Age Cohorts by County Subdivision in 9th Middlesex District

Children Age Cohorts by County Subdivision#5

Percentage of population aged 0 to 17 (%):
13.9%17.0%20.0%23.1%26.2%29.3%

College Age Cohorts by County Subdivision#6

Percentage of population aged 18 to 21 (%):
2.0%4.0%6.0%8.0%10.0%12.0%

20s Age Cohorts by County Subdivision#7

Percentage of population aged 22 to 29 (%):
6.5%8.5%10.5%12.4%14.3%16.3%

30s Age Cohorts by County Subdivision#8

Percentage of population aged 30 to 39 (%):
10.1%11.4%12.6%13.9%15.1%16.4%

40s Age Cohorts by County Subdivision#9

Percentage of population aged 40 to 49 (%):
11.99%12.05%12.11%12.17%12.23%12.29%

50s Age Cohorts by County Subdivision#10

Percentage of population aged 50 to 59 (%):
11.1%12.1%13.1%14.1%15.1%16.1%

60s Age Cohorts by County Subdivision#11

Percentage of population aged 60 to 69 (%):
9.21%9.68%10.14%10.61%11.07%11.54%

70s Age Cohorts by County Subdivision#12

Percentage of population aged 70 to 79 (%):
5.03%5.15%5.27%5.40%5.52%5.64%

80+ Age Cohorts by County Subdivision#13

Percentage of population aged 80 and older (%):
4.04%4.54%5.04%5.54%6.03%6.53%
Road Data ©OpenStreetMap

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Map of Age Cohorts by Tract in 9th Middlesex District

Children Age Cohorts by Tract#14

Percentage of population aged 0 to 17 (%):
6%14%23%31%39%48%

College Age Cohorts by Tract#15

Percentage of population aged 18 to 21 (%):
1%8%14%21%27%34%

20s Age Cohorts by Tract#16

Percentage of population aged 22 to 29 (%):
4.3%8.3%12.3%16.2%20.1%24.1%

30s Age Cohorts by Tract#17

Percentage of population aged 30 to 39 (%):
5.1%8.7%12.3%15.8%19.4%23.0%

40s Age Cohorts by Tract#18

Percentage of population aged 40 to 49 (%):
8.0%9.8%11.6%13.4%15.2%17.0%

50s Age Cohorts by Tract#19

Percentage of population aged 50 to 59 (%):
1.4%5.5%9.6%13.6%17.7%21.8%

60s Age Cohorts by Tract#20

Percentage of population aged 60 to 69 (%):
0.9%3.9%6.8%9.8%12.7%15.7%

70s Age Cohorts by Tract#21

Percentage of population aged 70 to 79 (%):
0.0%1.6%3.1%4.7%6.3%7.9%

80+ Age Cohorts by Tract#22

Percentage of population aged 80 and older (%):
0.0%2.8%5.6%8.5%11.3%14.2%
Road Data ©OpenStreetMap

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Map of Age Cohorts by Block Group in 9th Middlesex District

Children Age Cohorts by Block Group#23

Percentage of population aged 0 to 17 (%):
3%12%21%30%39%48%

College Age Cohorts by Block Group#24

Percentage of population aged 18 to 21 (%):
0%15%30%45%60%75%

20s Age Cohorts by Block Group#25

Percentage of population aged 22 to 29 (%):
0%9%19%28%37%47%

30s Age Cohorts by Block Group#26

Percentage of population aged 30 to 39 (%):
0%8%16%24%32%41%

40s Age Cohorts by Block Group#27

Percentage of population aged 40 to 49 (%):
1.6%5.7%9.7%13.8%17.8%21.9%

50s Age Cohorts by Block Group#28

Percentage of population aged 50 to 59 (%):
1%7%13%18%24%30%

60s Age Cohorts by Block Group#29

Percentage of population aged 60 to 69 (%):
0%9%16%24%32%40%

70s Age Cohorts by Block Group#30

Percentage of population aged 70 to 79 (%):
0.0%3.1%6.1%9.2%12.2%15.3%

80+ Age Cohorts by Block Group#31

Percentage of population aged 80 and older (%):
0.0%3.2%6.3%9.5%12.7%15.9%
Road Data ©OpenStreetMap

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Age Cohorts by Place in 9th Middlesex District

There are 2 places that are fully or partially contained within 9th Middlesex District (0 fully and 2 partially). This section compares all 2 of those to each other, 9th Middlesex District, and other entities that contain or substantially overlap with 9th Middlesex District.

Children by Place#32

Percentage of population aged 0 to 17 (%):
Scope: population of 9th Middlesex District, selected places in 9th Middlesex District, and entities that contain 9th Middlesex District
0%10%20%30%40%Count#Hanscom AFBUnited States of AmericaUnited StatesNortheastMassachusettsNew EnglandBoston, Cambridge, and Newton Metro AreaBoston AreaMiddlesex CountyMiddlesex9th Middlesex DistrictMA-9th MiddlesexWaltham45.805455%45.805455%45.8%890123.108006%23.108006%23.1%73,612,43873.6M21.341491%21.341491%21.3%11,965,27112.0M20.624778%20.624778%20.6%1,390,5521.39M20.620396%20.620396%20.6%3,024,7813.02M20.611211%20.611211%20.6%974,672975k20.568254%20.568254%20.6%322,430322k17.691509%17.691509%17.7%7,32813.933237%13.933237%13.9%8,7362

Age Cohorts by Metro Area in 9th Middlesex District

There is 1 metro area that are fully or partially contained within 9th Middlesex District (0 fully and 1 partially). This section compares all 1 of those to each other, 9th Middlesex District, and other entities that contain or substantially overlap with 9th Middlesex District.

Children by Metro Area#41

Percentage of population aged 0 to 17 (%):
Scope: population of 9th Middlesex District, selected metro areas in 9th Middlesex District, and entities that contain 9th Middlesex District
0%5%10%15%20%Count#United States of AmericaUnited StatesNortheastMassachusettsNew EnglandBoston, Cambridge, and Newton Metro AreaBoston AreaMiddlesex CountyMiddlesex9th Middlesex DistrictMA-9th Middlesex23.108006%23.108006%23.1%73,612,43873.6M21.341491%21.341491%21.3%11,965,27112.0M20.624778%20.624778%20.6%1,390,5521.39M20.620396%20.620396%20.6%3,024,7813.02M20.611211%20.611211%20.6%974,672975k20.568254%20.568254%20.6%322,430322k17.691509%17.691509%17.7%7,328

Age Cohorts by County in 9th Middlesex District

There is 1 county that are fully or partially contained within 9th Middlesex District (0 fully and 1 partially). This section compares all 1 of those to each other, 9th Middlesex District, and other entities that contain or substantially overlap with 9th Middlesex District.

Children by County#50

Percentage of population aged 0 to 17 (%):
Scope: population of 9th Middlesex District, selected counties in 9th Middlesex District, and entities that contain 9th Middlesex District
0%5%10%15%20%Count#United States of AmericaUnited StatesNortheastMassachusettsNew EnglandBoston, Cambridge, and Newton Metro AreaBoston AreaMiddlesex CountyMiddlesex9th Middlesex DistrictMA-9th Middlesex23.108006%23.108006%23.1%73,612,43873.6M21.341491%21.341491%21.3%11,965,27112.0M20.624778%20.624778%20.6%1,390,5521.39M20.620396%20.620396%20.6%3,024,7813.02M20.611211%20.611211%20.6%974,672975k20.568254%20.568254%20.6%322,430322k17.691509%17.691509%17.7%7,328

Age Cohorts by County Subdivision in 9th Middlesex District

There are 2 county subdivisions that are fully or partially contained within 9th Middlesex District (1 fully and 1 partially). This section compares all 2 of those to each other, 9th Middlesex District, and other entities that contain or substantially overlap with 9th Middlesex District.

Children by County Subdivision#59

Percentage of population aged 0 to 17 (%):
Scope: population of 9th Middlesex District, selected county subdivisions in 9th Middlesex District, and entities that contain 9th Middlesex District
0%10%20%Count#Town of LincolnLincolnUnited States of AmericaUnited StatesNortheastMassachusettsNew EnglandBoston, Cambridge, and Newton Metro AreaBoston AreaMiddlesex CountyMiddlesex9th Middlesex DistrictMA-9th MiddlesexWaltham29.213652%29.213652%29.2%1,943123.108006%23.108006%23.1%73,612,43873.6M21.341491%21.341491%21.3%11,965,27112.0M20.624778%20.624778%20.6%1,390,5521.39M20.620396%20.620396%20.6%3,024,7813.02M20.611211%20.611211%20.6%974,672975k20.568254%20.568254%20.6%322,430322k17.691509%17.691509%17.7%7,32813.933237%13.933237%13.9%8,7362

Age Cohorts by Lower State Legislative District in Massachusetts

There are 160 lower state legislative districts in Massachusetts. This section compares 9th Middlesex District to all of the lower state legislative districts in Massachusetts and to those entities that contain or substantially overlap with 9th Middlesex District.

Children by Lower State Legislative District#68

Percentage of population aged 0 to 17 (%):
Scope: population of 9th Middlesex District, selected other lower state legislative districts in Massachusetts, and entities that contain 9th Middlesex District
0%10%20%Count#10th Hampden DistrictMA-10th Hampden9th Plymouth DistrictMA-9th Plymouth13th Norfolk DistrictMA-13th Norfolk8th Middlesex DistrictMA-8th Middlesex16th Essex DistrictMA-16th Essex10th Essex DistrictMA-10th Essex14th Norfolk DistrictMA-14th Norfolk17th Essex DistrictMA-17th Essex11th Hampden DistrictMA-11th Hampden5th Suffolk DistrictMA-5th Suffolk18th Essex DistrictMA-18th Essex6th Suffolk DistrictMA-6th Suffolk8th Norfolk DistrictMA-8th Norfolk10th Norfolk DistrictMA-10th Norfolk11th Worcester DistrictMA-11th Worcester13th Middlesex DistrictMA-13th Middlesex14th Bristol DistrictMA-14th Bristol11th Essex DistrictMA-11th Essex9th Hampden DistrictMA-9th Hampden2nd Middlesex DistrictMA-2nd Middlesex5th Plymouth DistrictMA-5th Plymouth9th Norfolk DistrictMA-9th Norfolk9th Worcester DistrictMA-9th Worcester5th Middlesex DistrictMA-5th Middlesex10th Worcester DistrictMA-10th Worcester5th Hampden DistrictMA-5th Hampden6th Plymouth DistrictMA-6th Plymouth11th Middlesex DistrictMA-11th Middlesex15th Middlesex DistrictMA-15th Middlesex14th Suffolk DistrictMA-14th Suffolk18th Worcester DistrictMA-18th WorcesterUnited States of AmericaUnited States2nd Suffolk DistrictMA-2nd Suffolk21st Middlesex DistrictMA-21st Middlesex36th Middlesex DistrictMA-36th Middlesex4th Middlesex DistrictMA-4th MiddlesexNortheast12th Worcester DistrictMA-12th Worcester1st Suffolk DistrictMA-1st SuffolkMassachusettsNew EnglandBoston, Cambridge, and Newton Metro AreaBoston Area2nd Hampden DistrictMA-2nd HampdenMiddlesex CountyMiddlesex8th Plymouth DistrictMA-8th Plymouth16th Suffolk DistrictMA-16th Suffolk4th Hampden DistrictMA-4th Hampden3rd Norfolk DistrictMA-3rd Norfolk9th Middlesex DistrictMA-9th Middlesex29th Middlesex DistrictMA-29th Middlesex4th Barnstable DistrictMA-4th Barnstable25th Middlesex DistrictMA-25th Middlesex3rd Suffolk DistrictMA-3rd Suffolk18th Suffolk DistrictMA-18th Suffolk8th Suffolk DistrictMA-8th Suffolk17th Suffolk DistrictMA-17th Suffolk28.677069%28.677069%28.7%12,33212.3k128.525755%28.525755%28.5%11,24211.2k227.794321%27.794321%27.8%11,85411.9k327.763170%27.763170%27.8%12,24812.2k427.533055%27.533055%27.5%12,05712.1k527.371724%27.371724%27.4%11,68811.7k627.243309%27.243309%27.2%12,12312.1k726.573935%26.573935%26.6%10,96611.0k826.127459%26.127459%26.1%10,77010.8k925.967107%25.967107%26.0%11,21011.2k1025.865185%25.865185%25.9%11,59211.6k1125.851099%25.851099%25.9%11,58011.6k1225.761228%25.761228%25.8%11,00711.0k1325.756266%25.756266%25.8%11,02611.0k1425.545221%25.545221%25.5%11,15111.2k1525.519302%25.519302%25.5%10,93410.9k1625.507479%25.507479%25.5%10,50510.5k1725.447297%25.447297%25.4%10,34010.3k1825.198080%25.198080%25.2%10,65410.7k1925.184330%25.184330%25.2%11,34011.3k2024.672509%24.672509%24.7%10,58510.6k2124.480098%24.480098%24.5%10,81810.8k2224.461263%24.461263%24.5%10,37510.4k2324.404749%24.404749%24.4%10,87510.9k2424.367721%24.367721%24.4%10,60810.6k2524.143496%24.143496%24.1%9,7252624.123155%24.123155%24.1%10,02110.0k2724.087644%24.087644%24.1%10,02610.0k2823.968495%23.968495%24.0%10,59010.6k2923.867390%23.867390%23.9%10,11510.1k3023.670994%23.670994%23.7%9,9923523.108006%23.108006%23.1%73,612,43873.6M23.036604%23.036604%23.0%10,76810.8k4222.814509%22.814509%22.8%10,04510.0k4622.392218%22.392218%22.4%9,6455721.978397%21.978397%22.0%9,6656921.341491%21.341491%21.3%11,965,27112.0M21.161478%21.161478%21.2%8,5858021.104571%21.104571%21.1%9,7528220.624778%20.624778%20.6%1,390,5521.39M20.620396%20.620396%20.6%3,024,7813.02M20.611211%20.611211%20.6%974,672975k20.605620%20.605620%20.6%8,5069120.568254%20.568254%20.6%322,430322k20.014606%20.014606%20.0%8,22210319.926036%19.926036%19.9%8,99810619.351106%19.351106%19.4%8,02811418.085444%18.085444%18.1%7,96712517.691509%17.691509%17.7%7,32812816.921757%16.921757%16.9%7,29713713.350465%13.350465%13.4%5,3511488.783784%8.783784%8.8%3,6531568.563049%8.563049%8.6%3,7371577.868431%7.868431%7.9%3,0621587.556862%7.556862%7.6%3,3691597.344601%7.344601%7.3%2,577160

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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