Grantham ZIP Codes — Sullivan County, NH

There is one unique ZIP code in Grantham, New Hampshire and it is 03753. Area code: 603.
1
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
$0
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
86
20–24
114
10
25–34
14
138
35–44
182
193
45–54
256
223
55–59
294
87
60–64
114
180
65–74
237
167
75–84
220
26
85+
34
← Male
Female →

Age summary

GroupCount%
Under 1875822.2%
18 and over2,64977.8%
65 and over86425.4%
Median age52.3 years

Race & ethnicity

White 100%
GroupCount%
White3,407100%

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–$25k4.3%
$25k–$35k8.2%
$35k–$50k3.2%
$50k–$75k18.9%
$75k–$100k8.7%
$100k–$150k13.4%
$150k–$200k24.4%
$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

MetricValue
Median home value$353,200
Median rent / month$0
Owner occupied95.0%
Renter occupied5.0%
Vacant43.7%
Single-family detached90.7%
Large apartment buildings0.0%
Mobile homes0.0%
Median rooms6.1
Avg household size (owned)2.78

Year built

Era%
2020 or later0.0%
2010–20195.9%
2000–200915.3%
1990–199915.6%
1980–198932.8%
1970–197925.3%
1960–19690.0%
1950–19591.3%
1940–19490.2%
1939 or earlier3.5%

Bedrooms

Size% of units
No bedroom (studio)0.0%
1 bedroom1.8%
2 bedrooms17.1%
3 bedrooms69.7%
4 bedrooms5.4%
5+ bedrooms6.0%

Vehicles per household

Vehicles% of households
No vehicle0.0%
1 vehicle10.8%
2 vehicles48.1%
3 or more41.1%

Heating fuel

Fuel type%
Utility gas1.6%
Propane / LP gas43.8%
Fuel oil33.3%
Wood18.6%

Households & families

Household typeCount%
Married-couple family87075.1%
Cohabiting couple302.6%
Male householder, no spouse15513.4%
Female householder, no spouse1049.0%
Households with children under 1834729.9%
Households with seniors (65+)62253.7%
Average household size2.94

Marital status

StatusMaleFemale
Never married5.6%24.0%
Married79.8%48.8%
Separated3.9%7.0%
Widowed3.9%9.3%
Divorced6.7%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 higher98.4%
Bachelor's or higher59.5%

School enrollment (ages 3–17)

TypeCount%
Nursery / preschool727.2%
Kindergarten666.6%
Elementary school40440.6%
High school21621.7%
College / grad school23723.8%

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 & arts58.3%
Service15.9%
Sales & office12.3%
Natural resources & construction2.1%
Production & transportation11.3%

Employment type

Type%
Private sector84.9%
Government5.1%
Self-employed10.0%
Unpaid family workers0.0%

Commute

Method%
Drive alone82.6%
Carpool9.8%
Public transit0.0%
Walk0.0%
Other means1.1%
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 Security46.0%
Retirement income37.5%
Supplemental Security0.0%
Cash public assistance4.1%
Food stamps / SNAP0.0%

Health indicators

Condition%
High blood pressure30.8%
High cholesterol33.3%
Heart disease6.2%
Stroke2.6%
Asthma10.1%
Arthritis27.3%
Kidney disease2.7%
Pulmonary disease5.7%
Cancer8.4%
Behavior / access%
Binge drinking15.3%
No physical activity16.4%
Less than 7 hrs sleep30.6%
Fair or poor health10.2%
Poor mental health11.7%
Poor physical health8.7%
No health insurance8.3%
Visited doctor (checkup)72.7%
Visited dentist73.0%
Cholesterol screening94.0%
Teeth loss9.0%

Veterans & disability

VeteransCount%
Civilian veterans1505.7%
Disability%
Any disability8.5%
Under 180.0%
18–64 years2.5%
65 and over28.4%

Health insurance coverage

Type%
Private insurance80.9%
Public insurance38.1%
Uninsured under 190.0%

Language & origin

Language spoken at home (age 5+)

LanguageCount%
English only3,407100.0%
Spanish00.0%
Other Indo-European00.0%
Asian & Pacific Islander00.0%
Other languages00.0%

Place of birth & citizenship

OriginCount%
Native born (US)3,34898.3%
Born in same state3,34598.2%
Born in different state1,72650.7%
Foreign born30.1%
Naturalized citizen591.7%
Not a US citizen1627.1%

Ancestry

AncestryCount%
French1,07031.4%
Italian39711.7%
German2657.8%
AncestryCount%
Arab1233.6%
Polish481.4%
English431.3%

Technology access

Metric% of households
Computer access34.0%
Internet access99.7%

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

Frequently asked questions
What ZIP codes does Grantham, NH have?
Grantham, NH has one ZIP code: 03753. Each ZIP code serves a distinct delivery area within the city and surrounding region.
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