Groton Flag

Groton

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

Groton is located in Southeastern CT Planning Region, Connecticut. Groton has a 2025 population of 39,668. Groton is currently growing at a rate of 2.34% annually and its population has increased by 3.49% since the most recent census, which recorded a population of 38,329 in 2020.

The average household income in Groton is $110,683 with a poverty rate of 10.05%. The median age in Groton is 36.3 years: 33.3 years for males, and 40.8 years for females.

39.7K
Total Population
1,275
Density (mi²)
906 2.34%
Growth

Groton Population

Groton Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Groton includes 75.43% White, 6.33% Asian, 5.32% Black or African American, and smaller percentages for other race, Native American and multiracial populations.

Population by Race

White (75.4%)

Two or more races (9.9%)

Asian (6.3%)

Black or African American (5.3%)

Other race (2.4%)

Native American (0.5%)

Race
Population
Percentage (of total)
White28,72775.43%
Two or more races3,7819.93%
Asian2,4126.33%
Black or African American2,0285.32%
Other race9282.44%
Native American2100.55%

Groton Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Groton's average per capita income is $57,845. Household income levels show a median of $83,547. The poverty rate stands at 10.05%.

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$123,730-
Families$100,278$129,166
Households$83,547$110,683
Non Families$73,382$80,801

$57,845

Average Income

$83,547

Median Household Income

10.05%

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)