Groton is located in Southeastern Connecticut Planning Region Connecticut. Groton has a 2024 population of 37,790. Groton is currently declining at a rate of -0.23% annually and its population has decreased by -1.44% since the most recent census, which recorded a population of 38,343 in 2020.
The average household income in Groton is $105,902 with a poverty rate of 8.44%. The median age in Groton is 37 years: 33.2 years for males, and 41.4 years for females.
According to the most recent ACS, the racial composition of Groton was:
White
Two or more races
Asian
Black or African American
Other race
Native American
Native Hawaiian or Pacific Islander
Household Type | Count | Average Size | Owner | Renter |
|---|---|---|---|---|
| All | 16,391 | 2.22 | 54.2 | 45.8 |
| Married | 6,977 | 2.88 | 71.7 | 28.3 |
| Non Family | 6,676 | 1.22 | 44.3 | 55.7 |
| Female | 2,004 | 2.95 | 30.3 | 69.7 |
| Male | 734 | 3.07 | 41.8 | 58.2 |
2.82
Average Family Size
2.22
Average Household Size
54.2%
Rate of Home Ownership
Married
Male
Female
NonFamily
owner
renter
Male
Female
Less Than 9th Grade
9th to 12th Grade
High School Graduate
Some College
Associates Degree
Bachelors Degree
Graduate Degree
High School Graduation Rate
Bachelors Rate
The highest rate of high school graduation is among native american people with a rate of 100%.
The highest rate of bachelors degrees is among asian people with a rate of 58.24%.
All
Male
Female
$53,371
Average Earnings
$66,060
Average Male
$40,392
Average Female
Only English
Spanish
Other Indo-European Languages
Asian and Pacific Island Languages
Other Languages
88.29% of Groton residents speak only English, while 11.71% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 4.41% of the population.
rate
8.44%
Overall Poverty Rate
8.1%
Male Poverty Rate
8.82%
Female Poverty Rate
The race most likely to be in poverty in Groton is Hispanic, with 19.77% below the poverty level.
The race least likely to be in poverty in Groton is Asian, with 4.95% below the poverty level.
The poverty rate among those that worked full-time for the past 12 months was 1.06%. Among those working part-time, it was 14.95%, and for those that did not work, the poverty rate was 12.35%.
Married
Widowed
Divorced
Separated
NeverMarried
46.8%
Overall Marriage Rate
45.3%
Male Marriage Rate
48.5%
Female Marriage Rate
male
female
The age group where males are most likely to be married is Over 65, while the female age group most likely to be married is 45-54.
Married
Widowed
Divorced
Separated
NeverMarried
Less Than 9th Grade
High School Graduate
Some College
Bachelors or Greater
3.7%
Veteran Poverty Rate
28.18%
Veteran Disability Rate
LaborForceParticipation
66.9%
Labor Force Participation
55.3%
Employment Rate
5.6%
Unemployment Rate
LaborForceParticipation
LaborForceParticipation
Europe
Asia
Africa
Oceania
Latin America
North America
Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.
Europe
Asia
Africa
Oceania
Latin America
North America
43.2%
Born in Groton
91.17%
Native Born
8.83%
Foreign Born
3.3%
Non Citizen
5.53%
Naturalized
91.17% of Groton residents were born in the United States, with 43.2% having been born in Connecticut. 3.3% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.
Year | Population | Growth | Growth Rate |
|---|---|---|---|
| 2029 | 37,350 | -88 | -0.24% |
| 2028 | 37,438 | -88 | -0.23% |
| 2027 | 37,526 | -88 | -0.23% |
| 2026 | 37,614 | -88 | -0.23% |
| 2025 | 37,702 | -88 | -0.23% |
| 2024 | 37,790 | -88 | -0.23% |
| 2023 | 37,878 | -88 | -0.23% |
| 2022 | 37,966 | 244 | 0.65% |
| 2021 | 37,722 | -621 | -1.62% |
| 2020 | 38,343 | -15 | -0.04% |
| 2019 | 38,358 | -286 | -0.74% |
| 2018 | 38,644 | -236 | -0.61% |
| 2017 | 38,880 | -213 | -0.54% |
| 2016 | 39,093 | -195 | -0.5% |
| 2015 | 39,288 | -447 | -1.12% |
| 2014 | 39,735 | -365 | -0.91% |
| 2013 | 40,100 | -131 | -0.33% |
| 2012 | 40,231 | 405 | 1.02% |
| 2011 | 39,826 | -268 | -0.67% |
| 2010 | 40,094 | 0 | 0% |