Groton Population

2010–2026

39,146

2026 projection

2.1% since 2020 (increase)

010K20K30K40K50K201020122014201620182020202220242026

Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.

Use the left and right arrow keys to inspect population observations.

Population by year

Population estimates for Groton. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
202639,146+80.02%
202539,138+80.02%
202439,130+1,0542.77%
202338,076+880.23%
202237,988-3810.99%
202138,369+300.08%
202038,339-190.05%
201938,358-2860.74%
201838,644-2360.61%
201738,880-2130.54%

Showing 10 of 17 years.

Groton Demographics

36.8median age

Median age

Female40.8 yrs
Male33.7 yrs

Adults

31,117
7,418 seniors · 24%23,699 other adults

Sex

Female 47% · 17,939Male 53% · 20,191

Population by age

MaleFemale85+ years, male: 62485+ years, female: 63080–84 years, male: 62280–84 years, female: 46375–79 years, male: 58175–79 years, female: 81470–74 years, male: 60070–74 years, female: 79665–69 years, male: 1,03765–69 years, female: 1,25160–64 years, male: 1,36260–64 years, female: 1,24055–59 years, male: 1,17655–59 years, female: 1,15150–54 years, male: 1,06650–54 years, female: 96745–49 years, male: 62045–49 years, female: 89040–44 years, male: 85140–44 years, female: 85935–39 years, male: 1,12035–39 years, female: 1,14530–34 years, male: 1,84930–34 years, female: 1,34125–29 years, male: 2,04225–29 years, female: 1,41120–24 years, male: 1,95420–24 years, female: 1,71215–19 years, male: 1,46715–19 years, female: 84010–14 years, male: 99410–14 years, female: 6115–9 years, male: 7675–9 years, female: 8840–4 years, male: 1,4590–4 years, female: 93485+80–8475–7970–7465–6960–6455–5950–5445–4940–4435–3930–3425–2920–2415–1910–145–90–45005001K1K1.5K1.5K

Hover or tap an age group to see exact counts. Use the up and down arrow keys to inspect age groups.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101

Race and ethnicity

Tap a square or a group below to highlight it.

Each square is about 1% of residents (roughly 381 people).

Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002

Groton Income

$88,284median household income

Median household income

$88,284

Half of households earn more, half earn less

Median earnings

$59,383

Typical yearly pay for a worker 25 or older.

Poverty rate

10.7%

About 1 in 9 residents

U.S. Census Bureau, 2024 ACS 5-year estimates · Tables S1901, S1501, S1701

Groton Marital Status

47% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married47%47%46%
Never married36%40%32%
Divorced12%9%15%
Widowed5%4%6%
Separated<1%<1%1%

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201

Sources

10 sources, all from the U.S. Census Bureau

Population

American Community Survey, 2024 5-year