03753 ZIP Code — Grantham, NH

Sullivan County, New Hampshire

ZIP code 03753 is located in Grantham, New Hampshire, within Sullivan County. It covers approximately 28.23 square miles and serves a population of 3,407 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 603.

About ZIP code 03753

The housing stock consists of predominantly single-family detached homes. Most homes were built in the 1980s, giving the area an established character. Median home value is $353,200. Owner-occupancy is high at 95%, well above the national average.

The gap between median ($114,201) and mean household income suggests income inequality — a small number of higher earners pull the average up. 46% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 24 minutes is near the national average.

Educational attainment is high — 60% of residents hold a bachelor's degree or higher, well above the national average of 33%.

Overall, ZIP code 03753 reflects a community defined by a highly educated population, high homeownership, and a significant Social Security-dependent population.

3,407

population

28.23

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

03753 ZIP code map

Cities in ZIP code 03753

Below are the cities the US Postal Service accepts for ZIP code 03753. Using any city not on this list may result in mail delivery delays.

City	Status
Grantham	Preferred

Nearby ZIP codes

03284 Springfield (6 mi) 03770 Meriden (6.9 mi) 03781 Plainfield (7.5 mi) 03748 Enfield (7.7 mi) 03782 Sunapee (8.9 mi) 03773 Newport (9.5 mi) 03257 New London (9.8 mi) 03240 Grafton (9.9 mi) 03766 Lebanon (10 mi) 03233 Elkins (10.5 mi) 03287 Wilmot (11.7 mi) 05052 North Hartland (12.1 mi)

Demographics updated 05/2026

Population
Total population	3,407
Population density	121 / sq mi
State FIPS	33
County FIPS	019

Geography
Land area	28.23 sq mi
Water area	0.85 sq mi
Latitude	43.5072
Longitude	-72.1401
Timezone	Eastern (ET)
Area code	603

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	13.1%	39.4%	31.0%
$50k – $100k	28.5%	36.1%	31.2%
$100k – $200k	39.9%	19.6%	28.1%
Over $200k	18.5%	4.9%	9.7%

Demographics & statistics

3,407

Population

121

People per sq mi

52.3

Median age

$114,201

Median household income

$48,835

Per capita income

$353,200

Median home value

Median monthly rent

95.0%

Home ownership

0.0%

Poverty rate

2.6%

Unemployment

1,999

Housing units

59.5%

Bachelor's or higher

Age distribution

Male Female

136

5–9

180

106

10–14

139

117

15–19

154

20–24

114

25–34

138

35–44

182

193

45–54

256

223

55–59

294

60–64

114

180

65–74

237

167

75–84

220

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	758	22.2%
18 and over	2,649	77.8%
65 and over	864	25.4%
Median age	52.3 years

Race & ethnicity

White 100%

Group	Count	%
White	3,407	100%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	13.1%	39.4%	31.0%
$50k – $100k	28.5%	36.1%	31.2%
$100k – $200k	39.9%	19.6%	28.1%
Over $200k	18.5%	4.9%	9.7%

$15k–$25k 4.3%

$25k–$35k 8.2%

$35k–$50k 3.2%

$50k–$75k 18.9%

$75k–$100k 8.7%

$100k–$150k 13.4%

$150k–$200k 24.4%

$200k+ 18.9%

Range	% of households
$15k–$25k	4.3%
$25k–$35k	8.2%
$35k–$50k	3.2%
$50k–$75k	18.9%
$75k–$100k	8.7%
$100k–$150k	13.4%
$150k–$200k	24.4%
$200k+	18.9%
Median income	$114,201

Housing

Home values

$150k–$200k 5.4%

$200k–$300k 31.0%

$300k–$500k 41.1%

$500k–$1M 15.9%

$1M+ 6.6%

Housing overview

Metric	Value
Median home value	$353,200
Median rent / month	$0
Owner occupied	95.0%
Renter occupied	5.0%
Vacant	43.7%
Single-family detached	90.7%
Large apartment buildings	0.0%
Mobile homes	0.0%
Median rooms	6.1
Avg household size (owned)	2.78

Year built

Era	%
2020 or later	0.0%
2010–2019	5.9%
2000–2009	15.3%
1990–1999	15.6%
1980–1989	32.8%
1970–1979	25.3%
1960–1969	0.0%
1950–1959	1.3%
1940–1949	0.2%
1939 or earlier	3.5%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	1.8%
2 bedrooms	17.1%
3 bedrooms	69.7%
4 bedrooms	5.4%
5+ bedrooms	6.0%

Vehicles per household

Vehicles	% of households
No vehicle	0.0%
1 vehicle	10.8%
2 vehicles	48.1%
3 or more	41.1%

Heating fuel

Fuel type	%
Utility gas	1.6%
Propane / LP gas	43.8%
Fuel oil	33.3%
Wood	18.6%

Households & families

Household type	Count	%
Married-couple family	870	75.1%
Cohabiting couple	30	2.6%
Male householder, no spouse	155	13.4%
Female householder, no spouse	104	9.0%
Households with children under 18	347	29.9%
Households with seniors (65+)	622	53.7%
Average household size	2.94

Marital status

Status	Male	Female
Never married	5.6%	24.0%
Married	79.8%	48.8%
Separated	3.9%	7.0%
Widowed	3.9%	9.3%
Divorced	6.7%	10.9%

Education

Less than 9th grade 0.0%

Some HS, no diploma 1.6%

HS graduate 16.8%

Some college, no degree 13.3%

Associate's degree 8.8%

Bachelor's degree 29.2%

Graduate / professional 30.3%

Metric	%
HS diploma or higher	98.4%
Bachelor's or higher	59.5%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	72	7.2%
Kindergarten	66	6.6%
Elementary school	404	40.6%
High school	216	21.7%
College / grad school	237	23.8%

Employment

Industry of employment

Education & healthcare 51.8%

Professional & management 10.6%

Retail trade 9.1%

Construction 6.1%

Other services 5.2%

Manufacturing 3.9%

Finance & real estate 3.8%

Information 3.7%

Agriculture & mining 2.5%

Arts, food & hospitality 1.9%

Public administration 1.5%

Occupation

Category	%
Management, business & arts	58.3%
Service	15.9%
Sales & office	12.3%
Natural resources & construction	2.1%
Production & transportation	11.3%

Employment type

Type	%
Private sector	84.9%
Government	5.1%
Self-employed	10.0%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	82.6%
Carpool	9.8%
Public transit	0.0%
Walk	0.0%
Work from home	6.4%
Other means	1.1%
Avg commute (minutes)	24.0

Poverty

All people 0.0%

Under 18 years 0.0%

18 and over 0.0%

Married-couple families 0.0%

Female-led households 0.0%

Income support

Source	% of households
Social Security	46.0%
Retirement income	37.5%
Supplemental Security	0.0%
Cash public assistance	4.1%
Food stamps / SNAP	0.0%

Health indicators

Condition	%
Obesity	30.5%
High blood pressure	30.8%
High cholesterol	33.3%
Diabetes	8.9%
Heart disease	6.2%
Stroke	2.6%
Asthma	10.1%
Arthritis	27.3%
Kidney disease	2.7%
Pulmonary disease	5.7%
Cancer	8.4%

Behavior / access	%
Smoking	12.1%
Binge drinking	15.3%
No physical activity	16.4%
Less than 7 hrs sleep	30.6%
Depression	21.2%
Fair or poor health	10.2%
Poor mental health	11.7%
Poor physical health	8.7%
No health insurance	8.3%
Visited doctor (checkup)	72.7%
Visited dentist	73.0%
Cholesterol screening	94.0%
Teeth loss	9.0%

Veterans & disability

Veterans	Count	%
Civilian veterans	150	5.7%

Disability	%
Any disability	8.5%
Under 18	0.0%
18–64 years	2.5%
65 and over	28.4%

Health insurance coverage

Type	%
Private insurance	80.9%
Public insurance	38.1%
No insurance	0.6%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	3,407	100.0%
Spanish	0	0.0%
Other Indo-European	0	0.0%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	3,348	98.3%
Born in same state	3,345	98.2%
Born in different state	1,726	50.7%
Foreign born	3	0.1%
Naturalized citizen	59	1.7%
Not a US citizen	16	27.1%

Ancestry

Ancestry	Count	%
French	1,070	31.4%
Italian	397	11.7%
German	265	7.8%

Ancestry	Count	%
Arab	123	3.6%
Polish	48	1.4%
English	43	1.3%

Technology access

Metric	% of households
Computer access	34.0%
Internet access	99.7%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions about ZIP code 03753

What city is ZIP code 03753 in?

ZIP code 03753 is primarily assigned to Grantham, New Hampshire.

What county is ZIP code 03753 in?

ZIP code 03753 falls within Sullivan County, New Hampshire.

Is ZIP code 03753 mostly owner-occupied?

95% of occupied units in ZIP code 03753 are owner-occupied, well above the national average.

How educated is the population of ZIP code 03753?

60% of residents hold a bachelor's degree or higher — well above the national average of ~33%, reflecting a highly educated population.

Does ZIP code 03753 have an older population?

25% of residents in ZIP code 03753 are 65 or older, above the national average of ~17%.

Does ZIP code 03753 have a large retiree population?

46% of households in ZIP code 03753 receive Social Security income, suggesting a significant retiree or disability population.

What timezone is ZIP code 03753 in?

ZIP code 03753 observes the EST timezone.