Groton Flag

Groton

County Seat:
No
Area (mi²):
31.11
State:
Connecticut

Groton is located in Southeastern Connecticut Planning Region, Connecticut. Groton has a 2026 population of 40,574. Groton is currently growing at a rate of 2.28% annually and its population has increased by 5.86% since the most recent census, which recorded a population of 38,329 in 2020.

The median household income in Groton is $88,284 with a poverty rate of 10.65%. The median age in Groton is 36.8 years: 33.7 years for males, and 40.8 years for females. For every 100 females there are 112.6 males.

40.6K
Total Population
1,304
Density (mi²)
906 2.28%
Growth

Groton Population

Groton Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
202640,5749062.28%
202539,6689062.34%
202438,7629062.39%
202337,856-36-0.1%
202237,8921960.52%
202137,696-633-1.65%
202038,329-63-0.16%
201938,358-286-0.74%
201838,644-236-0.61%
201738,880-213-0.54%
201639,093-195-0.5%
201539,288-447-1.12%
201439,735-365-0.91%
201340,100-131-0.33%
201240,2314051.02%
201139,826-289-0.72%
201040,094-31-0.08%

Median Age

Overall: 36.8 years
Female: 40.8 years
Male: 33.7 years

Groton Adults

There are 31,117 adults, (7,418 of whom are seniors) in Groton.

Sex Ratio

Female: 17,939 (47%)
Male: 20,191 (53%)

Demographics

The racial composition of Groton includes 73.13% White, 6.81% Asian, 5.21% Black or African American, and smaller percentages for other race, Native American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White27,88573.13%
Two or more races4,63412.15%
Asian2,5986.81%
Black or African American1,9865.21%
Other race8442.21%
Native American1660.44%
Native Hawaiian or Pacific Islander170.04%
Race
Population ↓
Percentage (of total)
Two or more races2,1885.74%
White1,2453.27%
Other race7181.88%
Black or African American1880.49%
Native American1490.39%
Asian940.25%
Native Hawaiian or Pacific Islander170.04%
Race
Population ↓
Percentage (of total)
White26,64069.87%
Asian2,5046.57%
Two or more races2,4466.41%
Black or African American1,7984.72%
Other race1260.33%
Native American170.04%

Groton Marital Status

Economics and Income Statistics

Groton 's average per capita income is $59,383. Household income levels show a median of $88,284. The poverty rate stands at 10.65%.

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$125,772$157,238
Families$103,449$135,986
Households$88,284$115,809
Non Families$75,647$82,481

$59,383

Average Income

$88,284

Median Household Income

10.65%

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)