03240 ZIP Code — Grafton, NH

Grafton County, New Hampshire

ZIP code 03240 is located in Grafton, New Hampshire, within Grafton County. It covers approximately 41.47 square miles and serves a population of 1,200 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 603.

About ZIP code 03240

The housing stock consists of predominantly single-family detached homes. Most homes were built in the pre-1940, giving the area an established character. Median home value is $212,900. Owner-occupancy is high at 90%, well above the national average.

Median household income is $72,500. 37% 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. An above-average commute of 40 minutes suggests many residents work outside the immediate area.

Educational attainment is near the national average, with 25% of residents holding a bachelor's degree or higher.

Overall, ZIP code 03240 reflects a community defined by high homeownership and a significant Social Security-dependent population.

1,200

population

41.47

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

03240 ZIP code map

Cities in ZIP code 03240

Below are the cities the US Postal Service accepts for ZIP code 03240. Using any city not on this list may result in mail delivery delays.

City	Status
Grafton	Preferred

Nearby ZIP codes

03230 Danbury (6.5 mi) 03284 Springfield (6.6 mi) 03741 Canaan (7.2 mi) 03748 Enfield (7.9 mi) 03233 Elkins (9.4 mi) 03287 Wilmot (9.6 mi) 03222 Bristol (9.8 mi) 03753 Grantham (9.9 mi) 03257 New London (10.9 mi) 03243 Hill (11.1 mi) 03241 Hebron (12 mi) 03216 Andover (12.4 mi)

Demographics updated 05/2026

Population
Total population	1,200
Population density	29 / sq mi
State FIPS	33
County FIPS	009

Geography
Land area	41.47 sq mi
Water area	0.93 sq mi
Latitude	43.5767
Longitude	-71.9668
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	35.0%	37.5%	31.0%
$50k – $100k	37.1%	32.1%	31.2%
$100k – $200k	24.2%	21.7%	28.1%
Over $200k	3.7%	8.6%	9.7%

Demographics & statistics

1,200

Population

People per sq mi

49.9

Median age

$72,500

Median household income

$39,186

Per capita income

$212,900

Median home value

$1,172

Median monthly rent

90.2%

Home ownership

9.4%

Poverty rate

6.9%

Unemployment

653

Housing units

25.4%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

15–19

20–24

25–34

35–44

45–54

55–59

60–64

65–74

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	221	18.4%
18 and over	979	81.6%
65 and over	240	20.0%
Median age	49.9 years

Race & ethnicity

White 89.8%

Two or more races 6.2%

Hispanic or Latino 2.4%

Native Hawaiian / Pacific Islander 0.8%

Asian 0.4%

American Indian / Alaska Native 0.2%

Other race 0.1%

Group	Count	%
White	1,105	89.8%
Two or more races	76	6.2%
Hispanic or Latino	30	2.4%
Native Hawaiian / Pacific Islander	10	0.8%
Asian	5	0.4%
American Indian / Alaska Native	3	0.2%
Other race	1	0.1%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	35.0%	37.5%	31.0%
$50k – $100k	37.1%	32.1%	31.2%
$100k – $200k	24.2%	21.7%	28.1%
Over $200k	3.7%	8.6%	9.7%

Under $10k 2.9%

$10k–$15k 4.1%

$15k–$25k 5.6%

$25k–$35k 7.1%

$35k–$50k 10.6%

$50k–$75k 21.6%

$75k–$100k 18.7%

$100k–$150k 14.3%

$150k–$200k 5.4%

$200k+ 9.8%

Range	% of households
Under $10k	2.9%
$10k–$15k	4.1%
$15k–$25k	5.6%
$25k–$35k	7.1%
$35k–$50k	10.6%
$50k–$75k	21.6%
$75k–$100k	18.7%
$100k–$150k	14.3%
$150k–$200k	5.4%
$200k+	9.8%
Median income	$72,500

Housing

Home values

Under $50k 6.4%

$50k–$100k 6.2%

$100k–$150k 19.1%

$150k–$200k 14.5%

$200k–$300k 27.8%

$300k–$500k 21.8%

$500k–$1M 1.6%

$1M+ 2.5%

Housing overview

Metric	Value
Median home value	$212,900
Median rent / month	$1,172
Owner occupied	90.2%
Renter occupied	9.8%
Vacant	31.1%
Single-family detached	82.6%
Large apartment buildings	0.0%
Mobile homes	14.0%
Median rooms	5.2
Avg household size (owned)	2.40

Year built

Era	%
2020 or later	0.0%
2010–2019	4.0%
2000–2009	12.9%
1990–1999	11.0%
1980–1989	21.9%
1970–1979	15.3%
1960–1969	6.3%
1950–1959	2.4%
1940–1949	0.4%
1939 or earlier	25.9%

Bedrooms

Size	% of units
No bedroom (studio)	4.7%
1 bedroom	9.3%
2 bedrooms	37.6%
3 bedrooms	34.7%
4 bedrooms	11.0%
5+ bedrooms	2.7%

Vehicles per household

Vehicles	% of households
No vehicle	1.2%
1 vehicle	27.6%
2 vehicles	45.0%
3 or more	26.1%

Heating fuel

Fuel type	%
Utility gas	1.0%
Electricity	0.6%
Propane / LP gas	33.2%
Fuel oil	32.0%
Wood	27.8%
No fuel used	0.8%

Households & families

Household type	Count	%
Married-couple family	245	50.8%
Cohabiting couple	71	14.7%
Male householder, no spouse	103	21.4%
Female householder, no spouse	63	13.1%
Households with children under 18	121	25.1%
Households with seniors (65+)	168	34.9%
Average household size	2.49

Marital status

Status	Male	Female
Never married	33.8%	20.6%
Married	46.2%	56.6%
Separated	0.5%	1.4%
Widowed	5.4%	4.2%
Divorced	14.1%	17.2%

Education

Less than 9th grade 2.6%

Some HS, no diploma 7.9%

HS graduate 32.8%

Some college, no degree 21.2%

Associate's degree 10.1%

Bachelor's degree 16.0%

Graduate / professional 9.4%

Metric	%
HS diploma or higher	89.5%
Bachelor's or higher	25.4%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	16	7.4%
Kindergarten	20	9.3%
Elementary school	80	37.2%
High school	41	19.1%
College / grad school	58	27.0%

Employment

Industry of employment

Education & healthcare 27.2%

Other services 11.6%

Manufacturing 11.4%

Construction 11.1%

Professional & management 9.3%

Retail trade 8.8%

Transportation & utilities 5.8%

Finance & real estate 5.6%

Public administration 3.6%

Wholesale trade 2.3%

Arts, food & hospitality 2.3%

Information 0.8%

Occupation

Category	%
Management, business & arts	26.4%
Service	22.4%
Sales & office	17.4%
Natural resources & construction	14.9%
Production & transportation	18.9%

Employment type

Type	%
Private sector	77.9%
Government	10.4%
Self-employed	11.6%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	83.3%
Carpool	1.8%
Public transit	0.0%
Walk	0.9%
Work from home	13.3%
Other means	0.7%
Avg commute (minutes)	39.8

Poverty

All people 9.4%

Under 18 years 6.7%

18 and over 10.0%

Married-couple families 5.3%

Female-led households 3.4%

Income support

Source	% of households
Social Security	36.9%
Retirement income	29.7%
Supplemental Security	8.3%
Cash public assistance	2.9%
Food stamps / SNAP	9.1%

Health indicators

Condition	%
Obesity	34.0%
High blood pressure	29.3%
High cholesterol	31.2%
Diabetes	9.3%
Heart disease	6.6%
Stroke	2.9%
Asthma	10.8%
Arthritis	26.6%
Kidney disease	2.7%
Pulmonary disease	7.2%
Cancer	7.0%

Behavior / access	%
Smoking	17.6%
Binge drinking	16.6%
No physical activity	18.9%
Less than 7 hrs sleep	31.2%
Depression	23.6%
Fair or poor health	13.3%
Poor mental health	14.7%
Poor physical health	10.8%
No health insurance	11.5%
Visited doctor (checkup)	73.2%
Visited dentist	64.7%
Cholesterol screening	91.2%
Teeth loss	13.1%

Veterans & disability

Veterans	Count	%
Civilian veterans	107	10.9%

Disability	%
Any disability	18.5%
Under 18	3.2%
18–64 years	17.7%
65 and over	35.0%

Health insurance coverage

Type	%
Private insurance	64.5%
Public insurance	43.0%
No insurance	7.8%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	1,132	94.3%
Spanish	5	0.4%
Other Indo-European	0	0.0%
Asian & Pacific Islander	0	0.0%
Other languages	5	0.4%

Place of birth & citizenship

Origin	Count	%
Native born (US)	1,174	97.8%
Born in same state	1,174	97.8%
Born in different state	489	40.8%
Foreign born	0	0.0%
Naturalized citizen	26	2.2%
Not a US citizen	14	53.8%

Ancestry

Ancestry	Count	%
Italian	200	16.7%
French	194	16.2%
Arab	56	4.7%
German	53	4.4%
Polish	9	0.8%

Ancestry	Count	%
English	7	0.6%
Norwegian	7	0.6%
Irish	3	0.3%
Dutch	2	0.2%

Technology access

Metric	% of households
Computer access	40.2%
Internet access	97.3%

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

Frequently asked questions about ZIP code 03240

What city is ZIP code 03240 in?

ZIP code 03240 is primarily assigned to Grafton, New Hampshire.

What county is ZIP code 03240 in?

ZIP code 03240 falls within Grafton County, New Hampshire.

Is ZIP code 03240 mostly owner-occupied?

90% of occupied units in ZIP code 03240 are owner-occupied, well above the national average.

Does ZIP code 03240 have a large retiree population?

37% of households in ZIP code 03240 receive Social Security income, suggesting a significant retiree or disability population.

Does ZIP code 03240 have a large veteran population?

11% of civilians in ZIP code 03240 are veterans, above the national average of ~7%.

What is the population of ZIP code 03240?

ZIP code 03240 has an estimated population of 1,200 residents, with a density of 29 people per square mile.

What timezone is ZIP code 03240 in?

ZIP code 03240 observes the EST timezone.