Overview
22,110
Total Population
46.5
Median age
49.44%
Female population %
102.3:100
Gender ratio (M:F)
50-54 years
Largest age group
56.0
Total dependency ratio
White
Largest racial group
2,248
Hispanic population
Sources: U.S. Census Bureau, American Community Survey (ACS) 2021
TABLE OF CONTENTS
Age
Watertown town's population is old compared to the rest of the country:
- The median age in Watertown town is 46.5, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
- Watertown town's population under 18 was 16.75%, compared to the 22.51% nationwide.
- Watertown town's elderly or the senior population (over 65 age) was 22.24% as compared to 16.04% nationwide.
- Of the total population in Watertown town, 13.65% were under the age of 15, 16.71% aged 15 to 29, 47.40% aged 30 to 64, 17.76% aged 65 to 84, and 4.48% were 85 years of age and older.

Read more about Watertown, Connecticut population by age ➔
Gender
There are 246 less females than males in Watertown town:
- The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 49.44% females and 50.56% males in Watertown, Connecticut.
- The Watertown, Connecticut gender ratio is 102.3:100 i.e. 102.3 men to 100 women (1.023).
- For male population, the largest age group is 55-59 years with a population of 1,037.
- For the female population, the largest age group is 50-54 years with a population of 956.

Read more about Watertown, Connecticut population by gender ➔
Race / Ethnicity
Watertown town's population has become increasingly diverse:
- Racial distribution of Watertown town population: 90.39% are White, 1.35% are Black or African American, 0.13% are American Indian and Alaska Native, 1.79% are Asian, 1.79% are some other race and 4.55% are multiracial.
- Watertown town's racial breakdown clearly shows that there is an absolute majority of White population in the town.
- By ethnicity, 2,248 is Hispanic or Latino (of any race), and 19,862 (89.83% of the total population) is Non-Hispanic.
- The largest racial group in Watertown town is White with a population of 19,986 (90.39% of the total population).

Read more about Watertown, Connecticut population by race ➔
Year by year
Watertown town's population has already reached its peak and is showing a trend of decline:
- The peak population was 22,532 in the year 2010
- From 2000 to 2010, Watertown town's population increased by 821 (3.78%), as compared to the national growth of 9.63%.
- From 2010 to 2020, Watertown town's population decreased by 434 (1.93%), according to Census Bureau's Population Estimates Program. For the same period, the rate of growth for the United States was 7.17%.
- Between the year 2000 and 2021, Watertown town's population was lowest in year 2019 at 21,590.

Read more about Watertown, Connecticut population by year ➔
References
- U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates
- U.S. Census Bureau Population Estimates Population Estimates Program (PEP)