Middlesex County, CT population age distribution
A complete breakdown of Middlesex County's age demographics from 0 to 85 years, distributed across 18 age groups is listed in the table below.
Age Group | Population | % of Total Population |
---|---|---|
Under 5 years | 6,544 | 3.98% |
5 to 9 years | 7,519 | 4.57% |
10 to 14 years | 8,791 | 5.34% |
15 to 19 years | 10,316 | 6.27% |
20 to 24 years | 10,041 | 6.1% |
25 to 29 years | 9,179 | 5.58% |
30 to 34 years | 9,328 | 5.67% |
35 to 39 years | 9,923 | 6.03% |
40 to 44 years | 8,944 | 5.43% |
45 to 49 years | 10,678 | 6.49% |
50 to 54 years | 12,487 | 7.59% |
55 to 59 years | 13,857 | 8.42% |
60 to 64 years | 13,188 | 8.01% |
65 to 69 years | 11,008 | 6.69% |
70 to 74 years | 8,724 | 5.3% |
75 to 79 years | 5,771 | 3.51% |
80 to 84 years | 3,978 | 2.42% |
85 years and over | 4,292 | 2.61% |
TABLE OF CONTENTS
Middlesex County, CT population by age group
Sources: U.S. Census Bureau, American Community Survey (ACS) 2021
![Middlesex County, CT population by age group The graph shows Middlesex County's population by age group, with age group on x-axis and the respective age group's percent of the total population on y-axis](https://i.neilsberg.com/ch/middlesex-county-ct-population-by-age-group.jpeg)
The largest age group in Middlesex County, CT was for the group of age 55-59 years with a population of 13,857 (8.42%), according to the 2021 American Community Survey.
At the same time, the smallest age group in Middlesex County, CT was the 80-84 years with a population of 3,978 (2.42%).
Middlesex County, CT population by age cohort
To better understand the age distribution of Middlesex County, CT's population, we divided it into the following 3 cohorts:
- Children : Under the age of 18 years
- Adults (working population): Between the age of 18 and 64 years
- Seniors: 65 years and above
![Middlesex County, CT population by age cohort The pie chart shows Middlesex County's population divided into segments, with each segment representing an age cohort. The area of each segment is in the same proportion of a circle as the population of the cohort is of the total population.](https://i.neilsberg.com/ch/middlesex-county-ct-population-by-age-cohorts.jpeg)
Here's the population for each of the three cohorts.
Age Group | Population | % of Total Population |
---|---|---|
Under 18 years | 28,878 | 17.55% |
18 to 64 years | 101,917 | 61.93% |
85 years and over | 33,773 | 20.52% |
Key stats for each age cohort as per our analysis of U.S. Census Bureau American Community Survey:
- Middlesex County's population under 18 was 17.55%, compared to the 22.51% nationwide.
- Middlesex County's working population (between 18 and 64) was 61.93%, compared to 61.45% nationwide.
- Middlesex County's elderly or the senior population (over 65 age) was 20.52% as compared to 16.04% nationwide.
Middlesex County, CT population pyramid
Population pyramid for Middlesex County, CT is charted below using the estimates from U.S. Census Bureau's American Community Survey 5-Year estimates. A wide base suggests population increase, narrow base indicates declining birth rates.
Key stats from our analysis of the Middlesex County's population pyramid:
- Youth dependency ratio, which is the number of children aged 0-14 per 100 persons aged 15-64, for Middlesex County, CT, is 21.2.
- Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Middlesex County, CT, is 31.3.
- Total dependency ratio for Middlesex County, CT is 52.5.
- Potential support ratio, which is the number of youth (working age population) per elderly, for Middlesex County, CT is 3.2.
![Middlesex County, CT population pyramid The graph shows Middlesex County's population across different age group and gender, with population on x-axis and population y-axis. The male population is plotted on the left in blue color whereas the female population is plotted on the right in pink color.](https://i.neilsberg.com/ch/middlesex-county-ct-population-by-age-and-gender-population-pyramid.jpeg)
Here's the Middlesex County, CT's male and female population across different age groups:
Age Group | Population(Male) | Population(Female) | Total Population |
---|---|---|---|
Under 5 years | 3,463 | 3,081 | 6,544 |
5 to 9 years | 4,048 | 3,471 | 7,519 |
10 to 14 years | 4,401 | 4,390 | 8,791 |
15 to 19 years | 5,224 | 5,092 | 10,316 |
20 to 24 years | 5,242 | 4,799 | 10,041 |
25 to 29 years | 4,719 | 4,460 | 9,179 |
30 to 34 years | 4,661 | 4,667 | 9,328 |
35 to 39 years | 5,028 | 4,895 | 9,923 |
40 to 44 years | 4,344 | 4,600 | 8,944 |
45 to 49 years | 5,312 | 5,366 | 10,678 |
50 to 54 years | 6,012 | 6,475 | 12,487 |
55 to 59 years | 6,844 | 7,013 | 13,857 |
60 to 64 years | 6,448 | 6,740 | 13,188 |
65 to 69 years | 5,330 | 5,678 | 11,008 |
70 to 74 years | 4,056 | 4,668 | 8,724 |
75 to 79 years | 2,526 | 3,245 | 5,771 |
80 to 84 years | 1,630 | 2,348 | 3,978 |
85 years and over | 1,617 | 2,675 | 4,292 |
Things to know
What is the population of Middlesex County, CT under 18?
Middlesex County's population under the age of 18 is 28,878, as per the latest U.S. Census Bureau's American Community Survey estimates. This population is 17.55% of the total resident population of Middlesex County, CT.
What is the aging population in Middlesex County, CT?
Middlesex County's population aged 65 years and above was 33,773. As per the U.S. Census Bureau's American Community Survey, this population is 20.52% of the entire population.
References
- U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates