Groton, NH

Town in NH, US

By Neilsberg Research

Last updated May 1, 2026

Key Indicators

A quick look at key numbers

Population

507

Source: U.S. Census Bureau American Community Survey (ACS) 2020-2024 5-Year Estimates

Median Age

51.1

years ∙ half population younger than 51.1, half older

Diversity Index

18.7%

chance two random people differ in race and ethnicity

Nativity

2.4%

foreign-born population

97.6%Native

2.4% Foreign-born

Geographic Context

Location, size, and surroundings

About

Groton is a town in Grafton County, New Hampshire, United States.

Location

Town in NH, US

Co-ordinates

DEC43.725276° N, 71.864930° W

DMS43° 43′ 30.99″ N, 71° 51′ 53.75″ W

Population Density & area

12.46/sq mi (4.81/km²)

Total Area

40.8 sq mi (105.6 km²)

Land Area

40.7 sq mi (105.4 km²) · 99.84%

Water Area

0.1 sq mi (0.2 km²) · 0.16%

Demographics & Living

Who lives here, how households are formed, and community composition

Population Composition

Key characteristics of the population

Sex Distribution

52.7% male

Male 52.7%

Female 47.3%

males per 100 females

Groton 111.3

New Hampshire 99.7

United States 98

Nativity

2.4%

foreign-born population

97.6%Native

2.4% Foreign-born

% Foreign-born

Groton 2.4%

New Hampshire 6.1%

United States 14.1%

Age Distribution

How the population is spread across age groups

Median Age

51.1

years ∙ half population younger than 51.1, half older

Groton

51.1

New Hampshire

43.3

United States

38.9

Dependency ratio

81.1

dependents per 100 working-age adults

Groton 81.1

New Hampshire 62.3

United States 64.4

AGE DISTRIBUTION

Distribution of age group

Median age

	Groton	New Hampshire	United States
Age Group
Children (Under 18)	15.4%	18.2%	22%
Working age (18-64)	55.2%	61.7%	60.8%
Senior (65+)	29.4%	20.1%	17.2%
Dependency ratio
Total dependency ratio	81.1	62.3	64.4
Child dependency ratio	27.9	29.6	36.1
Old-age dependency ratio	53.2	32.7	28.3

Racial & Ethnic Composition

Racial and ethnic makeup and how it compares

Race & Ethnicity

White

89.9%

Black

Asian

0.2%

Hispanic

3.9%

Other

Note: White, Black, and Asian refer to individuals belonging to a single race and not of Hispanic origin. Hispanics may be of any race.

Diversity Index

18.7%

chance two random people differ in race and ethnicity

Groton 18.7%

New Hampshire 24%

United States 61.4%

Note: The Diversity Index (DI), based on the Blau Index, measures the probability that two randomly selected individuals differ in race and ethnicity. Values range from 0 (no diversity) to 1 (high diversity) and are shown as percentages.

RACIAL & ETHNIC COMPOSITION

Race & Ethnicity

Percentage of Groton population

Racial and ethnic composition — Groton vs New Hampshire vs United States. Source: ACS 2020-2024 5-Year Estimates.
	Groton	New Hampshire	United States
Hispanic or Latino	3.9%	4.7%	19.3%
Mexican	0%	0.8%	11.3%
Puerto Rican	2%	1.4%	1.8%
Cuban	0%	0.1%	0.8%
Other Hispanic / Latino	2%	2.3%	5.5%
Not Hispanic or Latino	96.1%	95.3%	80.7%
One race	90.2%	91.3%	76.4%
White	89.9%	86.9%	57.4%
Black or African American	0%	1.3%	11.9%
American Indian and Alaska Native	0%	0.1%	0.5%
Asian	0.2%	2.6%	5.9%
Native Hawaiian and Other Pacific Islander	0%	0%	0.2%
Some Other Race	0%	0.4%	0.6%
Two or more races (Multiracial)	5.9%	4%	4.3%

Household & Families Composition

Household size, type, and family structure

Household structure

74.5% family

Family 74.5%

Non family 25.5%

% family households

Groton 74.5%

New Hampshire 64.5%

United States 64.2%

Average household size

2.19

persons per household

Groton

2.19

New Hampshire

2.44

United States

2.53

Household & Family COMPOSITION

Households

Percentage of Groton population

	Groton	New Hampshire	United States
Total households	231	555,822	129,227,496
Average houshold size	2.19	2.44	2.53
Family households	172	358,314	82,990,528
Average family size	2.41	2.97	3.14
Married couple family	142	286,197	60,637,388
Other families	30	72,117	22,353,140
Male householder	7	24,853	6,572,819
Female householder	23	47,264	15,780,321
Non-family households	59	197,508	46,236,968
One-person households	44	152,350	37,140,836
Male householder	29	68,271	16,871,444
Senior (65+) living alone	14	25,581	5,225,110
Female householder	15	84,079	20,269,392
Senior (65+) living alone	8	46,808	10,089,070
Other living arrangements	15	45,158	9,096,132

Housing Profile

Housing stock, ownership, rentals, and cost burdens

Total housing units

391

housing units

Groton 391

New Hampshire 648,472

United States 143,775,355

Occupancy status

59.1% occupied

Occupied 59.1%

Vacant 40.9%

vacancy rate

Groton 40.9%

New Hampshire 14.3%

United States 10.1%

Housing Characteristics

How the housing supply is structured and used

Types of Housing unit

86.5%

Single family houses

86.5%

Apartments in multi-unit structures

Mobile homes

13.6%

Boat, RV, van, etc

Median Year Built

1981

Half of houses were built before 1981, and half after.

Historic ∙ 1939 or earlier

7.4%

Postwar & mid-century ∙ 1940 - 1969

14.8%

Late 20th century ∙ 1970 - 1999

46%

Modern ∙ 2000 or later

31.7%

Note: Median year built reflects occupied units only; distribution includes all units.

Housing Characteristics

Units, rooms & bedrooms

Physical characteristics of housing units

	Groton	New Hampshire	United States
Rooms per unit
Median rooms	4.3	5.6	5.5
1–3 rooms	36.1%	13.4%	15.1%
4–6 rooms	48.3%	51.4%	51.6%
7+ rooms	15.6%	35.2%	33.4%
Bedrooms
No bedroom / studio	11.8%	1.7%	2.9%
1 bedroom	14.3%	11.2%	10.9%
2 bedrooms	36.3%	29.9%	25%
3 bedrooms	25.1%	37.7%	38.7%
4+ bedrooms	12.5%	19.5%	22.4%
At a glance
Median year built	1981	1980	1981
Total housing units	391	648,472	143,775,355

Occupancy Profile

Who is inside and how they use it

Homeownership

91.3% owners

Renter-occupied 8.7%

Owner-occupied 91.3%

homeownership rate

Groton 91.3%

New Hampshire 72.8%

United States 65.2%

Average household size

2.24

Owner-occupied

1.7

Renter-occupied

owner-occupied average size

Groton 2.24

New Hampshire 2.58

United States 2.64

Housing Characteristics

Occupied unit characteristics

Tenure, crowding, and utilities

	Groton	New Hampshire	United States
Total occupied units	231	555,822	129,227,496
Year moved in
2020 or later	16.9%	21.2%	24.8%
2010 to 2019	31.6%	39.6%	39.6%
2000 to 2009	34.6%	17.5%	16.4%
1999 or earlier	16.9%	21.7%	19.1%
Occupants per room
1.00 or fewer	98.3%	98.6%	96.6%
1.01 to 1.50	1.7%	0.9%	2.2%
1.51 or more	0%	0.5%	1.2%
Vehicles availability
No vehicles	3%	4.6%	8.4%
1 vehicle	19%	31.2%	33.1%
2 vehicles	57.1%	40.8%	36.6%
3 or more vehicles	20.8%	23.4%	21.9%
House heating fuel used
Gas	24.2%	40.6%	51.4%
Electricity	3.9%	11.1%	41.3%
Solar	0.9%	0.3%	0.3%
Fuel oil, kerosene etc	42.9%	39.5%	3.9%
All other fuels	28.1%	7.7%	2%
No fuel used	0%	0.8%	1.2%
Selected characteristics
Lacking complete plumbing	0%	0.5%	0.4%
Lacking complete kitchen	0%	0.7%	0.8%
No telephone service available	0%	0.6%	0.9%

Housing Value

What owner-occupied units are worth

Median home value

$269,000

owner-occupied units

Median value(USD)

Groton

$269,000

New Hampshire

$402,500

United States

$332,700

Housing Cost Burden

22.7%

of homeowners with a mortgage are cost-burdened

% Cost-Burdened Households

Owners with a mortgage

22.7%

Owners without a mortgage

17.1%

Renters

50%

Note: Households spending 30% or more of their income on housing costs are considered cost-burdened.

Financial characteristics

Property value and housing costs

Tenure, crowding, and utilities

	Groton	New Hampshire	United States
Property value
Median Value	$269,000	$402,500	$332,700
Under $100,000	3.3%	5.8%	11.4%
$100,000 - $200,000	24.7%	7.6%	15.8%
$200,000 - $300,000	29.4%	16.1%	17.8%
$300,000 - $500,000	32.2%	38.7%	26.9%
$500,000 - $1,000,000	9.5%	27.6%	20.9%
$1,000,000 and more	0.9%	4.1%	7.1%
Owner-occupied households
With a mortgage	56.4%	62.2%	60.6%
Without a mortgage	43.6%	37.8%	39.4%
Median monthly owner costs
With a mortgage	$1,603	$2,367	$1,963
Without a mortgage	$550	$995	$638
Gross rent
Median rent	$2,667	$1,491	$1,413

Education Profile

How educated is the community and how education pays off

Adults with a college degree

29.2%

of adults 25+ with a bachelor's degree or higher

Groton 29.2%

New Hampshire 40.6%

United States 35.7%

Adults without a high school diploma

5.1%

of adults (25+) without a high school diploma

Groton 5.1%

New Hampshire 5.6%

United States 10.4%

School Enrollment

Who is enrolled in school and at what level

School enrollment

population (age 3+) enrolled in school

Nursery / Preschool

10.3%

K–12

72.4%

College / Undergraduate

3.4%

Graduate / Professional

13.8%

College-going rate (18-24 yr olds)

of 18-24-year-olds in college or graduate school

Groton

New Hampshire

42.6%

United States

40.9%

Enrollment & school type

Enrollment levels, college-going rate, and public vs private school split

Population 3+ currently enrolled in a school

	Groton	New Hampshire	United States
Total enrolled (age 3+)	58	291,492	80,089,790
Nursery / preschool	10.3%	5.9%	5.7%
K–12	72.4%	65.5%	67.6%
Kindergarten	6.9%	4.5%	5%
Elementary: Grades 1–4	27.6%	18.4%	19.8%
Elementary: Grades 5–8	5.2%	20.3%	21%
High School: Grades 9–12	32.8%	22.3%	21.7%
College or graduate school	17.2%	28.6%	26.7%
College, undergraduate	3.4%	22.4%	21%
Graduate, professional school	13.8%	6.2%	5.8%
College-going rate · 18-24 yr olds	0%	42.6%	40.9%
School type
Public school	81%	77%	82%
Private school	19%	23%	18%

Education Attainment by Level & Gender

What is the highest level of education completed among adults

Education attainment

415

population 25 years and over

Total adults (25+)

Less than 9th grade

9th-12th, no diploma

5.1%

HS graduate

42.2%

Some college no degree

15.7%

Associates degree

Bachelors degree

13%

Graduate or professional degree

16.1%

Attainment by gender

Male vs Female

Adults (25+) · Share within each education level

* The Census Bureau did not publish education attainment by gender data for Groton due to an insufficient sample size to produce reliable estimates.

% male · % female

Less than 9th grade

—% · —%

9th-12th, no diploma

85.7% · 14.3%

HS graduate

48% · 52%

Some college no degree

44.6% · 55.4%

Associates degree

36.4% · 63.6%

Bachelors degree

55.6% · 44.4%

Graduate or professional degree

61.2% · 38.8%

Educational Attainment Overview

Distribution and key education attainment rates for adults (25+)

Highest credential completed · adults 25+

	Groton	New Hampshire	United States
Population (25+)	415	1,019,229	230,807,303
Less than 9th grade	0%	1.8%	4.7%
9th–12th, no diploma	5.1%	3.8%	5.7%
High school diploma or GED	42.2%	26.8%	26%
Some college, no degree	15.7%	17.2%	19.1%
Associate's degree	8%	9.8%	8.8%
Bachelor's degree or higher	29.2%	40.6%	35.7%
Bachelor's degree	13%	24.5%	21.6%
Graduate or professional	16.1%	16.1%	14.1%
High School or higher	94.9%	94.4%	89.6%

Earnings by education level

percentage as applicable

Median Earnings

$39,444

Median earnings for adults 25+, by level

Less than HS graduate

$—

HS graduate

$27,031

Some college or associates

$52,891

Bachelors degree

$58,750

Graduate or professional degree

$61,250

Poverty Rate

2.5%

for ages 25+, with bachelors degree or higher

Less than HS graduate

14.3%

HS graduate

15.4%

Some college or associates

6.1%

Bachelors degree or higher

2.5%

Outcomes by Education Level

Earnings and poverty rates across education levels (25+)

Adults 25+

	Groton	New Hampshire	United States
Median earnings
Population 25+, with earnings	$39,444	$60,332	$52,696
Less than high school graduate	$—	$40,457	$32,485
High school graduate (includes equivalency)	$27,031	$48,323	$40,153
Some college or associate's degree	$52,891	$52,211	$47,260
Bachelor's degree	$58,750	$72,069	$70,044
Graduate or professional degree	$61,250	$88,483	$90,720
Poverty rates
Less than high school graduate	14.3%	20.6%	24.2%
High school graduate (includes equivalency)	15.4%	9.6%	14.4%
Some college or associate's degree	6.1%	6.5%	9.8%
Bachelor's degree or higher	2.5%	3.1%	4.5%

Insights for Groton, by topic

Income By year By race By age By gender

Population By year By race By age By gender

About Neilsberg Research

Neilsberg Research team are data scientists with expertise in processing, analysis and visualization of big data helping small businesses make right decisions.

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