Plymouth Flag

Plymouth

County Seat:
No
Area (mi²):
21.882
State:
Connecticut

Plymouth is located in Naugatuck Valley Planning Region, Connecticut. Plymouth has a 2026 population of 12,011. Plymouth is currently growing at a rate of 0.55% annually and its population has increased by 3.08% since the most recent census, which recorded a population of 11,652 in 2020.

The median household income in Plymouth is $94,514 with a poverty rate of 8.5%. The median age in Plymouth is 44.6 years: 44.3 years for males, and 45.7 years for females. For every 100 females there are 100.0 males.

12K
Total Population
549
Density (mi²)
66 0.55%
Growth

Plymouth Population

Plymouth Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
202612,011660.55%
202511,945660.56%
202411,879660.56%
202311,813820.7%
202211,731300.26%
202111,701490.42%
202011,652-12-0.1%
201911,607-56-0.48%
201811,663-33-0.28%
201711,696-81-0.69%
201611,777-91-0.77%
201511,868-78-0.65%
201411,946-107-0.89%
201312,053-53-0.44%
201212,106-80-0.66%
201112,186-57-0.47%
201012,234-9-0.07%

Median Age

Overall: 44.6 years
Female: 45.7 years
Male: 44.3 years

Plymouth Adults

There are 9,684 adults, (2,220 of whom are seniors) in Plymouth.

Sex Ratio

Female: 5,873 (50%)
Male: 5,873 (50%)

Demographics

The racial composition of Plymouth includes 89.44% White, 3.46% other race, and smaller percentages for Asian, Black or African American and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White10,50689.44%
Two or more races5915.03%
Other race4063.46%
Asian1251.06%
Black or African American1181%
Race
Population ↓
Percentage (of total)
White3472.95%
Other race3422.91%
Two or more races2742.33%
Asian100.09%
Race
Population ↓
Percentage (of total)
White10,15986.49%
Two or more races3172.7%
Black or African American1181%
Asian1150.98%
Other race640.54%

Plymouth Marital Status

Economics and Income Statistics

Plymouth 's average per capita income is $61,386. Household income levels show a median of $94,514. The poverty rate stands at 8.5%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median ↓
Mean
Married Families$143,750-
Families$118,085$127,681
Households$94,514$106,018
Non Families$58,926$64,265

$61,386

Average Income

$94,514

Median Household Income

8.5%

Poverty Rate

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)