Groton demographics profile

StatisticGrotonConnecticutNational
Population9,2403,588,570318,558,162
Population density (sq mi)2,99764891
Median age34.340.637.7
Male/Female ratio1.0:11.0:11.0:1
Married (15yrs & older)42%54%55%
Families w/ Kids under 1846%43%43%
Speak English83%78%79%
Speak Spanish9%12%13%
Groton, CT has a population of 9,240 and is the 4,171st largest city in the United States. The population density is 2,997 per sq mi which is 363% higher than the Connecticut average and 3208% higher than the national average. The median age in Groton is 34 which is approximately 16% lower than the Connecticut average of 41. In Groton, 42% of the population over 15 years of age are married, 83% speak English and 9% speak Spanish. 49% of Groton residents were born in Connecticut, 38% were born out of state, 3% were born outside of the United States and 10% were foreign born.
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Did you know?

  • The population density in Groton is 363% higher than Connecticut.
  • The median age in Groton is 16% lower than Connecticut.
  • In Groton 72.25% of the population is White.
  • In Groton 11.21% of the population is Black or African American.
  • In Groton 6.89% of the population is Asian.

Compare Groton, CT Demographics To Other Cities

Groton population breakdown by race

RaceGrotonConnecticutNational
White72.25%77.14%73.35%
Black or African American11.21%10.39%12.63%
Asian6.89%4.26%5.22%
American Indian0.05%0.26%0.82%
Native Hawaiian0.00%0.03%0.18%
Mixed race4.97%2.98%3.06%
Other race4.62%4.95%4.75%
In Groton, 14.5% of people are of Hispanic or Latino origin.
Please note: Hispanics may be of any race, so also are included in any/all of the applicable race categories above.

Languages spoken

Place of birth by citizenship

Household income distribution

Source of income

Groton age breakdown

Marital status

Age of children in married couples

Source: The Groton, CT demographics data displayed above is derived from the 2016 United States Census Bureau American Community Survey (ACS).
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