Groton, NH demographics:
population, income, and more

Total population
979
2.9% year-over-year change
Median household income
$83,723/yr
5.7% year-over-year change
Housing units
637
0.0% year-over-year change

Groton population

How many people live in Groton

Groton is home to 979 residents, according to the most recent Census data. Gender-wise, 50.4% of Groton locals are male, and 49.6% are female.

Total population
979
2.9% year-over-year change
Gender ratio
Male
50.4%
493
Female
49.6%
486
Value Percent YoY change
Male 493 50.4% 6.5%
Female 486 49.6% -0.4%
A higher population often means more rental variety and livelier areas. The gender balance—how many men live here compared to women—can reveal a lot about the community and the lifestyles of its residents. Use this info to get a sense of the area's pace and personality.

Age demographics

The median age in Groton is 53, with the population distributed as follows: about 11.3% are children under 15, then 9.2% are in the 15 to 24 age group. Adults between 25 and 44 make up 20.3% of the population, while another 26.8% fall into the 45 to 64 bracket. Finally, around 32.4% are 65 or older.

Median age
53
Age breakdown
Under 15
11.3%
15 to 24
9.2%
25 to 44
20.3%
45 to 64
26.8%
Over 65
32.4%
Value Percent YoY change
Under 15 111 11.3% 0.0%
15 to 24 90 9.2% 12.5%
25 to 44 199 20.3% 6.4%
45 to 64 262 26.8% -3.0%
Over 65 317 32.4% 4.6%
The age composition helps you get insight into who lives in the area. A younger population might mean a more active, fast-paced vibe, while an older one could suggest a quieter, slower lifestyle. If there's a balanced makeup, you’re likely to find a variety of services, housing types, and community spaces that cater to different life stages.

Racial makeup

In Groton, 95.3% of the population are US-born citizens, while 4.1% have gained naturalized citizenship. At the same time, 0.6% of residents are non-citizens. As for race, 92% of locals are Caucasian, 0.1% are African American and 0.4% have Asian roots. There’s also a share of 5.2% that includes residents with two or more races.

Citizenship
U.S.-born citizens
95.3%
Non-U.S.-born citizens
4.1%
Non-citizens
0.6%
Value Percent YoY change
U.S.-born citizens 933 95.3% 2.1%
Non-U.S.-born citizens 40 4.1% 37.9%
Non-citizens 6 0.6% -14.3%
Racial breakdown
White
92%
Black or African American
0.1%
American Indian and Alaska Native
0.1%
Asian
0.4%
Native Hawaiian and other Pacific Islander
0%
Two or more races
5.2%
Other
2.2%
Value Percent
White 900 92%
Black or African American 1 0.1%
American Indian and Alaska Native 1 0.1%
Asian 4 0.4%
Two or more races 51 5.2%
Other 21 2.2%

Households in Groton

A peek inside Groton households

Groton has 387 households, with an average of 2 members in each. Of these, 66.9% are families, while the remaining 33.1% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
387
5.2% year-over-year change
Average people per household
2
Non-family households
128
Family households
259
Value Percent YoY change
Non-family households 128 33.1% 2.4%
Family households 259 66.9% 6.2%
The mix between family and non-family households gives a glimpse into daily life. A higher percentage of families might mean more parks and schools, while more non-family setups can mean flexible housing and diverse living styles. For renters, this can signal what kinds of homes are common and can help you figure out if the area matches your lifestyle.

Housing in Groton

The housing landscape of Groton

Groton's housing consists of 637 units, with 88.7% being detached single-family homes ideal for those wanting space. Attached options, including duplexes and townhouses, make up 2.4% and offer a more compact, shared living style. Then there are the multifamily buildings in the area, and for those seeking flexibility, non-traditional options like mobile homes account for 5.2% of the housing landscape.

Housing units
637
0.0% year-over-year change
Housing types
Value Percent
1 unit, detached 566 88.7%
1 unit, attached 15 2.4%
2 units 7 1.1%
3 or 4 units 8 1.2%
5 to 9 units 2 0.3%
10 to 19 units 7 1.1%
Mobile home 33 5.2%
Homes built since 2020
16
45.5% year-over-year change

The age of buildings in Groton

In Groton, the median construction year is 1978. About 20.2% of homes were built before the 1940s, with another 2% going up by 1949. Most development happened in the second half of the 20th century. Then, 12.7% of homes were added from 2000 to 2009, 6.6% between 2010 and 2019, and 2.5% are part of the newest wave of development.

Construction year breakdown by decade
Value Percent YoY change
Built in 1939 or earlier 129 20.2% -4.4%
Built between 1940 and 1949 13 2% -27.8%
Built between 1950 and 1959 35 5.5% -7.9%
Built between 1960 and 1969 69 10.8% 6.2%
Built between 1970 and 1979 83 13% -5.7%
Built between 1980 and 1989 103 16.1% 3.0%
Built between 1990 and 1999 67 10.5% -4.3%
Built between 2000 and 2009 81 12.7% 3.9%
Built between 2010 and 2019 42 6.6% 20.0%
Built in 2020 or later 16 2.5% 45.5%
As a renter, knowing when homes were built helps you understand the potential condition and design of rental units. Newer builds may have more contemporary layouts, while older homes can offer character or larger lots, depending on the area.

Groton occupancy rates

Out of the 387 occupied housing units in Groton, 87.1% are owner-occupied, while 12.9% are lived in by tenants. Meanwhile, 39.2% of all homes on the local market sit vacant.

Occupied housing units
387
5.2% year-over-year change
Occupancy breakdown
Renter occupied
50
Owner occupied
337
Value Percent YoY
change
Renter occupied 50 12.9% 13.6%
Owner occupied 337 87.1% 4.0%
Unoccupied housing units
39.2%
Unoccupied housing units refer to homes that are currently without residents—whether they're waiting for renters or owners, used seasonally, or simply unclaimed. A higher share of empty homes may mean more housing availability, while a low number can reflect a tighter market with more competition. This, along with the renter-vs.-owner mix, helps paint a clearer picture of what types of housing and services are likely to be available in the area.

Groton housing costs

Housing costs in Groton come to a median of $1,226 per month, while tenants specifically pay a median gross rent of $1,262.

Median housing costs per month
$1,226/month
This figure sums up typical monthly housing costs for all households in the area. If you own, it includes mortgage payments in addition to property taxes, insurance and HOA fees. If you rent, it accounts for rent plus extras like utilities. It’s useful for seeing how local living expenses stack up compared to other places.
Median gross rent in Groton
$1,262/month
Gross rent gives a more complete look at what renters actually pay, including not just base rent, but also utilities and fees. It’s a key number for evaluating rental affordability in your area of interest and understanding how it compares to nearby locations.

Education in Groton

Groton education at a glance

About 34.4% of the population in Groton went to high school, while 18.2% pursued college studies. Another 6.8% earned an associate degree and 22.3% hold a bachelor’s. Meanwhile, 16.9% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
No high school 11 1.3% -26.7%
High school diploma 287 34.4% 5.5%
College diploma 152 18.2% -1.3%
Associate degree 57 6.8% -1.7%
Bachelor's degree 186 22.3% 7.5%
Graduate degree 141 16.9% 2.9%
A community’s education mix can offer insights into the local economy and housing market. Higher levels of education often align with more job opportunities and stable incomes, which can increase demand for homes and influence both rent prices and rental availability.

Income in Groton

How much people earn in Groton

The average annual household income in Groton was $131,318 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a +2.2% change from the previous year. At the same time, the median income stood at $83,723, reflecting a +5.6% shift over the same period.

Average household income in Groton
$131,318/year
2.1% year-over-year change
Median household income in Groton
$83,723/year
5.7% year-over-year change

Groton income by age

In Groton, households led by residents aged 25 to 44 — usually in the early to mid stages of their careers — have a median income of $102,198. Those with someone between 45 and 64 in charge, often well established professionally, earn $103,984 overall. Overall, 86.9% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
25 - 44 $102,198 5.3%
45 - 64 $103,984 -7.9%
Over 65 $66,276 5.8%
Above poverty level
834
Below poverty level
126
Value Percent YoY
change
Above poverty level 834 86.9% 3.7%
Below poverty level 126 13.1% 5.0%

Employment in Groton

Workforce and job types in Groton

77.2% of the working population are employed in professional or administrative positions, while 22.8% are in hands-on or service-based jobs. Also, 20.8% run their own businesses, 49% are employed by private companies, and 19.6% work in the public sector.

Workforce demographics

White collar
342
Blue collar
101
Value Percent YoY change
White collar 342 77.2% 4.6%
Blue collar 101 22.8% -1.0%
Employer type
Self employees
20.8%
Private companies
49%
Governmental workers
19.6%
Not for profit companies
10.6%
Value Percent YoY change
Self employees 92 20.8% 7.0%
Private companies 217 49% -1.8%
Governmental workers 87 19.6% 24.3%
Not for profit companies 47 10.6% -7.8%

Transportation in Groton

How people get around in Groton

Commuting methods vary: 93.5% of residents travel by personal vehicle and 4.6% prefer to walk, while the remaining share relies on public transit or on two wheelers to get from A to B.

Means of transportation
Value Percent YoY change
Car 346 93.5% 0.6%
Bus or trolleybus 6 1.6% -40.0%
Bicycle 1 0.3% N/A
Walk 17 4.6% 183.3%
Understanding how locals get to work can help you plan your own routine. High car usage might mean you’ll need a vehicle, while strong public transit or walkability could save you the hassle. Commute times also play a big role in quality of life—shorter trips can give you more time for the things you enjoy.

What is the median and average household income in Groton by zipcode?

Zipcode Population Number of households Median income Average income
03241 1,150 449 $91,375 $152,616
03266 2,130 864 $76,071 $99,183

Explore more communities

FAQs about Groton demographics 

What is the total population of Groton?

Groton has a total population of 979 residents, according to the latest release from the U.S. Census Bureau: the 2019-2023 American Community Survey (ACS) 5-year estimates. This figure changed by +2.9% compared to a year ago.

What is the gender ratio in Groton?

The gender ratio in Groton is as follows:
  • 50.4% males (493 residents)
  • 49.6% females (486 residents)

What is the median age in Groton?

The median age in Groton is 53.

What is the age distribution of the population in Groton?

The age distribution in Groton is as follows:
  • Under 15: 11.3% (111 residents)
  • Ages 15-24: 9.2% (90 residents)
  • Ages 25-44: 20.3% (199 residents)
  • Ages 45-64: 26.8% (262 residents)
  • Over 65: 32.4% (317 residents)

What is the racial and ethnic makeup of Groton?

The racial and ethnic makeup of Groton is as follows:
  • White: 92% (900 residents)
  • Black or African American: 0.1% (1 residents)
  • American Indian and Alaska Native: 0.1% (1 residents)
  • Asian: 0.4% (4 residents)
  • Native Hawaiian and Other Pacific Islander: 0% ( residents)
  • Two or More Races: 5.2% (51 residents)
  • Other: 2.2% (21 residents)

What percentage of the population in Groton are U.S.-born citizens?

U.S.-born citizens represent 95.3% of the population in Groton.

How many housing units are there in Groton?

There are 637 housing units in Groton, reflecting a 0.0% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

How many households are in Groton and what is the average household size?

Groton has a total of 387 households, with an average of 2 people in each.

What is the median household income in Groton?

Groton has a median household income of $83,723, representing a +5.7% shift from the previous year, according to the U.S. Census Bureau.

What is the job market overview for Groton?

Here’s a detailed breakdown of the local job market:

Job types:
  • White-collar workers: 77.2% (342 residents)
  • Blue-collar workers: 22.8% (101 residents)

Places of employment:
  • Self-employed: 20.8% (92 residents)
  • Private companies: 49% (217 residents)
  • Governmental workers: 19.6% (87 residents)
  • Not-for-profit companies: 10.6% (47 residents)

Data source & methodology

The demographic data on this page was sourced from the latest U.S. Census Bureau release—the 2019–2023 American Community Survey (ACS) 5-year estimates.

The information, issued annually, is compiled and published by the Point2Homes Research Team as soon as new data becomes available.

No representation, guarantee, or warranty is made concerning the accuracy or completeness of modified or aggregated information for particular areas.

Page last updated: September 2025