Grantham ZIP Code List — Sullivan County, NH

There is one unique ZIP code in Grantham, New Hampshire and it is 03753. Area code: 603.

ZIP codes

28.23

sq mi land

0.85

sq mi water

603

area code

Grantham, NH ZIP code map

About Grantham, NH

Grantham, New Hampshire, is a charming town located in Sullivan County. Known for its serene atmosphere and scenic surroundings, it offers residents a peaceful lifestyle. The town has a small community feel, where neighbors know each other and engage in local events and activities.

Location & geography

Grantham is situated in the central part of New Hampshire, approximately 35 miles from the vibrant city of Concord to the southeast. It is surrounded by stunning landscapes with a land area of 28.23 square miles and a water area of 0.85 square miles, featuring beautiful lakes and wooded areas. Neighboring cities include Lebanon, about 15 miles to the west, and New London, roughly 10 miles to the east.

Community & economy

The community in Grantham is characterized by its friendly and engaged residents, who often participate in town meetings and local events. Predominantly residential, it supports a range of small businesses and recreational opportunities, with many residents involved in the tourism and outdoor industries. Daily life in Grantham includes enjoying outdoor activities like hiking, skiing, and fishing, making it a haven for nature enthusiasts.

Transportation

Grantham is accessible via Interstate 89, which runs north-south through New Hampshire, making travel to nearby cities convenient. The nearest major airport is Lebanon Municipal Airport, about 15 miles away, providing regional flight services. Public transportation options are limited, so most residents rely on personal vehicles to navigate the area.

History

Founded in the early 18th century, Grantham has a rich history rooted in farming and logging, which were key industries during its early days. The town has seen growth in tourism over the years, particularly with the development of local lakes and recreational facilities. Notable events in the town's history include the establishment of community events that celebrate its heritage and promote local businesses.

Did you know?

An interesting fact about Grantham is that it is home to the Eastman Community Association, which manages a large residential community that promotes a lifestyle focusing on outdoor activities. Additionally, Grantham's picturesque landscapes have made it a popular retreat for visitors seeking tranquility and natural beauty.

ZIP codes for Grantham, NH (1)

ZIP code	City	County	Map
03753	Grantham	Sullivan	View map

Demographics & statistics

3,407

Population

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

$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%
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	%
High blood pressure	30.8%
High cholesterol	33.3%
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	%
Binge drinking	15.3%
No physical activity	16.4%
Less than 7 hrs sleep	30.6%
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%
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

What is the ZIP code for Grantham, NH?

Grantham, NH has one ZIP code: 03753.

What is the main ZIP code for Grantham, NH?

The primary ZIP code for Grantham, NH is 03753. The city uses area code 603 for phone service.

What county is Grantham, NH in?

Grantham is located in Sullivan County, New Hampshire.

How many ZIP codes are in Grantham, NH?

Grantham, NH has 1 ZIP code.

What ZIP code covers the Grantham village center and downtown area in Sullivan County?

The Grantham village center and downtown area is located in ZIP code 03753, which serves the entire town of Grantham, New Hampshire.

What is the ZIP code for residents living near Grantham State Forest in this Sullivan County town?

Residents in the areas near Grantham State Forest use ZIP code 03753, as this is the only ZIP code that covers all of Grantham, including its forested regions.