03840 ZIP Code — Greenland, NH

Rockingham County, New Hampshire

ZIP code 03840 is located in Greenland, New Hampshire, within Rockingham County. It covers approximately 10.48 square miles and serves a population of 4,052 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 603.

About ZIP code 03840

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 $564,600. Owner-occupancy is high at 85%, well above the national average.

Median household income is $143,625. The poverty rate of 4% is below the national average. 30% 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 19 minutes is near the national average. Remote work is prevalent — 23% of workers work from home.

Educational attainment is high — 52% of residents hold a bachelor's degree or higher, well above the national average of 33%.

Overall, ZIP code 03840 reflects a community defined by a highly educated population, high homeownership, a high rate of remote workers, and a significant Social Security-dependent population.

4,052

population

10.48

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

03840 ZIP code map

Cities in ZIP code 03840

Below are the cities the US Postal Service accepts for ZIP code 03840. Using any city not on this list may result in mail delivery delays.

City	Status
Greenland	Preferred

Nearby ZIP codes

03885 Stratham (2.8 mi) 03801 Portsmouth (3.5 mi) 03862 North Hampton (3.8 mi) 03870 Rye (4.7 mi) 03803 Portsmouth (5.2 mi) 03857 Newmarket (5.7 mi) 03856 Newfields (5.8 mi) 03842 Hampton (6.8 mi) 03844 Hampton Falls (7.1 mi) 03824 Durham (7.2 mi) 03904 Kittery (7.9 mi) 03903 Eliot (8.5 mi)

Demographics updated 05/2026

Population
Total population	4,052
Population density	387 / sq mi
State FIPS	33
County FIPS	015

Geography
Land area	10.48 sq mi
Water area	2.84 sq mi
Latitude	43.0326
Longitude	-70.8501
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	20.6%	23.5%	31.0%
$50k – $100k	17.9%	29.1%	31.2%
$100k – $200k	37.0%	32.8%	28.1%
Over $200k	24.5%	14.6%	9.7%

Demographics & statistics

4,052

Population

387

People per sq mi

46.9

Median age

$143,625

Median household income

$62,868

Per capita income

$564,600

Median home value

$2,172

Median monthly rent

85.1%

Home ownership

3.9%

Poverty rate

1.0%

Unemployment

1,343

Housing units

52.0%

Bachelor's or higher

Age distribution

Male Female

Under 5

180

5–9

168

120

10–14

111

115

15–19

107

20–24

184

25–34

172

216

35–44

201

394

45–54

367

147

55–59

137

172

60–64

160

324

65–74

301

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	874	21.6%
18 and over	3,178	78.4%
65 and over	826	20.4%
Median age	46.9 years

Race & ethnicity

White 88.7%

Asian 3.3%

Black or African American 3.1%

Two or more races 2.5%

Hispanic or Latino 1.2%

Other race 1.1%

Group	Count	%
White	3,641	88.7%
Asian	136	3.3%
Black or African American	127	3.1%
Two or more races	104	2.5%
Hispanic or Latino	51	1.2%
Other race	44	1.1%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	20.6%	23.5%	31.0%
$50k – $100k	17.9%	29.1%	31.2%
$100k – $200k	37.0%	32.8%	28.1%
Over $200k	24.5%	14.6%	9.7%

Under $10k 3.1%

$10k–$15k 0.5%

$15k–$25k 3.5%

$25k–$35k 2.1%

$35k–$50k 10.4%

$50k–$75k 5.4%

$75k–$100k 11.2%

$100k–$150k 20.0%

$150k–$200k 15.4%

$200k+ 28.4%

Range	% of households
Under $10k	3.1%
$10k–$15k	0.5%
$15k–$25k	3.5%
$25k–$35k	2.1%
$35k–$50k	10.4%
$50k–$75k	5.4%
$75k–$100k	11.2%
$100k–$150k	20.0%
$150k–$200k	15.4%
$200k+	28.4%
Median income	$143,625

Housing

Home values

Under $50k 0.8%

$50k–$100k 0.9%

$100k–$150k 1.4%

$200k–$300k 4.7%

$300k–$500k 32.9%

$500k–$1M 57.4%

$1M+ 2.0%

Housing overview

Metric	Value
Median home value	$564,600
Median rent / month	$2,172
Owner occupied	85.1%
Renter occupied	14.9%
Vacant	2.0%
Single-family detached	75.2%
Large apartment buildings	0.0%
Mobile homes	0.0%
Median rooms	6.8
Avg household size (owned)	2.62

Year built

Era	%
2020 or later	0.9%
2010–2019	18.3%
2000–2009	9.8%
1990–1999	15.6%
1980–1989	19.1%
1970–1979	8.8%
1960–1969	10.8%
1950–1959	6.6%
1940–1949	2.2%
1939 or earlier	8.0%

Bedrooms

Size	% of units
No bedroom (studio)	1.7%
1 bedroom	2.8%
2 bedrooms	19.8%
3 bedrooms	43.4%
4 bedrooms	27.4%
5+ bedrooms	4.8%

Vehicles per household

Vehicles	% of households
No vehicle	0.0%
1 vehicle	24.0%
2 vehicles	50.7%
3 or more	25.3%

Heating fuel

Fuel type	%
Utility gas	9.9%
Electricity	0.5%
Propane / LP gas	26.3%
Fuel oil	61.6%
Wood	1.8%

Households & families

Household type	Count	%
Married-couple family	904	58.7%
Cohabiting couple	98	6.4%
Male householder, no spouse	234	15.2%
Female householder, no spouse	304	19.7%
Households with children under 18	481	31.2%
Households with seniors (65+)	586	38.1%
Average household size	2.61

Marital status

Status	Male	Female
Never married	33.6%	13.9%
Married	54.9%	58.2%
Separated	0.7%	5.0%
Widowed	3.3%	8.4%
Divorced	7.4%	14.5%

Education

Less than 9th grade 0.8%

Some HS, no diploma 0.9%

HS graduate 22.0%

Some college, no degree 16.5%

Associate's degree 7.8%

Bachelor's degree 36.7%

Graduate / professional 15.3%

Metric	%
HS diploma or higher	98.3%
Bachelor's or higher	52.0%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	64	6.9%
Kindergarten	106	11.4%
Elementary school	368	39.6%
High school	207	22.3%
College / grad school	184	19.8%

Employment

Industry of employment

Education & healthcare 18.4%

Professional & management 17.3%

Retail trade 12.3%

Finance & real estate 12.1%

Construction 8.9%

Arts, food & hospitality 8.3%

Manufacturing 7.1%

Other services 6.2%

Public administration 3.6%

Transportation & utilities 2.8%

Wholesale trade 1.4%

Agriculture & mining 0.8%

Information 0.7%

Occupation

Category	%
Management, business & arts	48.4%
Service	13.0%
Sales & office	25.2%
Natural resources & construction	7.3%
Production & transportation	6.2%

Employment type

Type	%
Private sector	77.7%
Government	11.6%
Self-employed	10.7%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	69.9%
Carpool	3.5%
Public transit	0.0%
Walk	1.6%
Work from home	22.8%
Other means	2.2%
Avg commute (minutes)	19.4

Poverty

All people 3.9%

Under 18 years 11.4%

18 and over 1.9%

Married-couple families 0.8%

Female-led households 28.8%

Income support

Source	% of households
Social Security	30.4%
Retirement income	34.2%
Supplemental Security	2.5%
Cash public assistance	2.2%
Food stamps / SNAP	0.5%

Health indicators

Condition	%
Obesity	29.1%
High blood pressure	30.0%
High cholesterol	30.9%
Diabetes	7.6%
Heart disease	4.9%
Stroke	2.2%
Asthma	9.5%
Arthritis	22.9%
Kidney disease	2.3%
Pulmonary disease	4.9%
Cancer	7.1%

Behavior / access	%
Smoking	12.2%
Binge drinking	18.0%
No physical activity	14.5%
Less than 7 hrs sleep	28.4%
Depression	18.9%
Fair or poor health	8.9%
Poor mental health	12.5%
Poor physical health	8.2%
No health insurance	7.1%
Visited doctor (checkup)	73.8%
Visited dentist	77.6%
Cholesterol screening	93.3%
Teeth loss	7.3%

Veterans & disability

Veterans	Count	%
Civilian veterans	338	10.6%

Disability	%
Any disability	7.5%
Under 18	0.0%
18–64 years	5.7%
65 and over	20.5%

Health insurance coverage

Type	%
Private insurance	88.0%
Public insurance	24.0%
No insurance	5.1%
Uninsured under 19	4.4%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	3,895	96.1%
Spanish	76	2.0%
Other Indo-European	39	1.0%
Asian & Pacific Islander	18	0.5%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	3,816	94.2%
Born in same state	3,789	93.5%
Born in different state	1,250	30.8%
Foreign born	27	0.7%
Naturalized citizen	236	5.8%
Not a US citizen	136	57.6%

Ancestry

Ancestry	Count	%
Italian	916	22.6%
French	712	17.6%
Arab	251	6.2%
German	200	4.9%
English	108	2.7%

Ancestry	Count	%
Irish	56	1.4%
Polish	52	1.3%
Norwegian	36	0.9%
Dutch	9	0.2%

Technology access

Metric	% of households
Computer access	38.0%
Internet access	99.4%

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

Frequently asked questions about ZIP code 03840

What city is ZIP code 03840 in?

ZIP code 03840 is primarily assigned to Greenland, New Hampshire.

What county is ZIP code 03840 in?

ZIP code 03840 falls within Rockingham County, New Hampshire.

Is ZIP code 03840 mostly owner-occupied?

85% of occupied units in ZIP code 03840 are owner-occupied, well above the national average.

How educated is the population of ZIP code 03840?

52% of residents hold a bachelor's degree or higher — well above the national average of ~33%, reflecting a highly educated population.

Does ZIP code 03840 have a large veteran population?

11% of civilians in ZIP code 03840 are veterans, above the national average of ~7%.

What is the median household income in ZIP code 03840?

The median household income in ZIP code 03840 is $143,625, above the national median of ~$75,000.

What timezone is ZIP code 03840 in?

ZIP code 03840 observes the EST timezone.