Thomaston, Connecticut population age distribution
A complete breakdown of Thomaston town'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 | 405 | 5.4% |
5 to 9 years | 464 | 6.19% |
10 to 14 years | 446 | 5.95% |
15 to 19 years | 505 | 6.74% |
20 to 24 years | 457 | 6.1% |
25 to 29 years | 235 | 3.13% |
30 to 34 years | 546 | 7.28% |
35 to 39 years | 387 | 5.16% |
40 to 44 years | 427 | 5.7% |
45 to 49 years | 569 | 7.59% |
50 to 54 years | 596 | 7.95% |
55 to 59 years | 547 | 7.3% |
60 to 64 years | 640 | 8.54% |
65 to 69 years | 519 | 6.92% |
70 to 74 years | 285 | 3.8% |
75 to 79 years | 233 | 3.11% |
80 to 84 years | 82 | 1.09% |
85 years and over | 154 | 2.05% |
TABLE OF CONTENTS
Thomaston, Connecticut population by age group
Sources: U.S. Census Bureau, American Community Survey (ACS) 2021

The largest age group in Thomaston, Connecticut was for the group of age 60-64 years with a population of 640 (8.54%), according to the 2021 American Community Survey.
At the same time, the smallest age group in Thomaston, Connecticut was the 80-84 years with a population of 82 (1.09%).
Thomaston, Connecticut population by age cohort
To better understand the age distribution of Thomaston, Connecticut'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

Here's the population for each of the three cohorts.
Age Group | Population | % of Total Population |
---|---|---|
Under 18 years | 1,585 | 21.14% |
18 to 64 years | 4,639 | 61.88% |
85 years and over | 1,273 | 16.98% |
Key stats for each age cohort as per our analysis of U.S. Census Bureau American Community Survey:
- Thomaston town's population under 18 was 21.14%, compared to the 22.51% nationwide.
- Thomaston town's working population (between 18 and 64) was 61.88%, compared to 61.45% nationwide.
- Thomaston town's elderly or the senior population (over 65 age) was 16.98% as compared to 16.04% nationwide.
Thomaston, Connecticut population pyramid
Population pyramid for Thomaston, Connecticut 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 Thomaston town's population pyramid:
- Youth dependency ratio, which is the number of children aged 0-14 per 100 persons aged 15-64, for Thomaston, Connecticut, is 26.8.
- Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Thomaston, Connecticut, is 25.9.
- Total dependency ratio for Thomaston, Connecticut is 52.7.
- Potential support ratio, which is the number of youth (working age population) per elderly, for Thomaston, Connecticut is 3.9.

Here's the Thomaston, Connecticut's male and female population across different age groups:
Age Group | Population(Male) | Population(Female) | Total Population |
---|---|---|---|
Under 5 years | 294 | 111 | 405 |
5 to 9 years | 249 | 215 | 464 |
10 to 14 years | 224 | 222 | 446 |
15 to 19 years | 238 | 267 | 505 |
20 to 24 years | 241 | 216 | 457 |
25 to 29 years | 111 | 124 | 235 |
30 to 34 years | 338 | 208 | 546 |
35 to 39 years | 201 | 186 | 387 |
40 to 44 years | 207 | 220 | 427 |
45 to 49 years | 200 | 369 | 569 |
50 to 54 years | 381 | 215 | 596 |
55 to 59 years | 301 | 246 | 547 |
60 to 64 years | 398 | 242 | 640 |
65 to 69 years | 309 | 210 | 519 |
70 to 74 years | 114 | 171 | 285 |
75 to 79 years | 118 | 115 | 233 |
80 to 84 years | 35 | 47 | 82 |
85 years and over | 50 | 104 | 154 |
Things to know
What is the population of Thomaston, Connecticut under 18?
Thomaston town's population under the age of 18 is 1,585, as per the latest U.S. Census Bureau's American Community Survey estimates. This population is 21.14% of the total resident population of Thomaston, Connecticut.
What is the aging population in Thomaston, Connecticut?
Thomaston town's population aged 65 years and above was 1,273. As per the U.S. Census Bureau's American Community Survey, this population is 16.98% of the entire population.
References
- U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates