03874 ZIP Code — Seabrook, NH

Rockingham County, New Hampshire

ZIP code 03874 is located in Seabrook, New Hampshire, within Rockingham County. It covers approximately 8.95 square miles and serves a population of 8,614 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 603.

About ZIP code 03874

The housing stock consists of a higher-than-average concentration of mobile homes. Most homes were built in the 2000s, giving the area an established character. Median home value is $377,700. Owner-occupancy sits near the national average at 74%.

The gap between median ($85,767) and mean household income suggests income inequality — a small number of higher earners pull the average up. The poverty rate of 7% is below the national average. 48% 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 26 minutes is near the national average.

Educational attainment is near the national average, with 24% of residents holding a bachelor's degree or higher.

8,614

population

8.95

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

03874 ZIP code map

Cities in ZIP code 03874

Below are the cities the US Postal Service accepts for ZIP code 03874. Using any city not on this list may result in mail delivery delays.

City	Status
Seabrook	Preferred

Nearby ZIP codes

03844 Hampton Falls (3.4 mi) 03842 Hampton (3.6 mi) 01950 Newburyport (4.8 mi) 01913 Amesbury (4.9 mi) 03827 East Kingston (5.8 mi) 03862 North Hampton (6.8 mi) 01860 Merrimac (8.1 mi) 03833 Exeter (8.2 mi) 01985 West Newbury (8.2 mi) 01951 Newbury (8.9 mi) 01922 Byfield (9.1 mi) 03858 Newton (9.1 mi)

Demographics updated 05/2026

Population
Total population	8,614
Population density	962 / sq mi
State FIPS	33
County FIPS	015

Geography
Land area	8.95 sq mi
Water area	0.63 sq mi
Latitude	42.8839
Longitude	-70.8657
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	32.8%	23.5%	31.0%
$50k – $100k	33.0%	29.1%	31.2%
$100k – $200k	23.5%	32.8%	28.1%
Over $200k	10.6%	14.6%	9.7%

Demographics & statistics

8,614

Population

962

People per sq mi

50.4

Median age

$85,767

Median household income

$51,057

Per capita income

$377,700

Median home value

$1,371

Median monthly rent

73.8%

Home ownership

7.3%

Poverty rate

9.0%

Unemployment

3,435

Housing units

23.5%

Bachelor's or higher

Age distribution

Male Female

133

Under 5

125

226

5–9

213

174

10–14

164

220

15–19

208

146

20–24

138

547

25–34

517

422

35–44

399

676

45–54

638

283

55–59

267

343

60–64

323

691

65–74

651

489

75–84

462

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	1,225	14.2%
18 and over	7,389	85.8%
65 and over	2,452	28.5%
Median age	50.4 years

Race & ethnicity

White 90.3%

Two or more races 5.4%

Black or African American 2.4%

Hispanic or Latino 1.9%

Group	Count	%
White	7,929	90.3%
Two or more races	470	5.4%
Black or African American	213	2.4%
Hispanic or Latino	168	1.9%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	32.8%	23.5%	31.0%
$50k – $100k	33.0%	29.1%	31.2%
$100k – $200k	23.5%	32.8%	28.1%
Over $200k	10.6%	14.6%	9.7%

Under $10k 3.5%

$10k–$15k 2.0%

$15k–$25k 9.2%

$25k–$35k 6.2%

$35k–$50k 8.1%

$50k–$75k 15.4%

$75k–$100k 15.6%

$100k–$150k 16.5%

$150k–$200k 7.0%

$200k+ 16.6%

Range	% of households
Under $10k	3.5%
$10k–$15k	2.0%
$15k–$25k	9.2%
$25k–$35k	6.2%
$35k–$50k	8.1%
$50k–$75k	15.4%
$75k–$100k	15.6%
$100k–$150k	16.5%
$150k–$200k	7.0%
$200k+	16.6%
Median income	$85,767

Housing

Home values

Under $50k 3.5%

$50k–$100k 7.2%

$100k–$150k 4.0%

$150k–$200k 7.5%

$200k–$300k 16.8%

$300k–$500k 35.0%

$500k–$1M 20.7%

$1M+ 5.3%

Housing overview

Metric	Value
Median home value	$377,700
Median rent / month	$1,371
Owner occupied	73.8%
Renter occupied	26.2%
Vacant	14.2%
Single-family detached	50.0%
Large apartment buildings	9.2%
Mobile homes	19.5%
Median rooms	5.5
Avg household size (owned)	2.41

Year built

Era	%
2020 or later	0.5%
2010–2019	7.0%
2000–2009	24.9%
1990–1999	11.7%
1980–1989	12.3%
1970–1979	16.5%
1960–1969	7.8%
1950–1959	8.5%
1940–1949	4.9%
1939 or earlier	5.9%

Bedrooms

Size	% of units
No bedroom (studio)	1.6%
1 bedroom	13.6%
2 bedrooms	30.6%
3 bedrooms	35.2%
4 bedrooms	12.0%
5+ bedrooms	7.0%

Vehicles per household

Vehicles	% of households
No vehicle	3.8%
1 vehicle	31.4%
2 vehicles	38.3%
3 or more	26.5%

Heating fuel

Fuel type	%
Utility gas	37.6%
Electricity	12.9%
Propane / LP gas	7.4%
Fuel oil	37.0%
Wood	0.7%
Solar	3.0%
No fuel used	0.6%

Households & families

Household type	Count	%
Married-couple family	1,838	48.3%
Cohabiting couple	392	10.3%
Male householder, no spouse	632	16.6%
Female householder, no spouse	941	24.7%
Households with children under 18	682	17.9%
Households with seniors (65+)	1,713	45.0%
Average household size	2.27

Marital status

Status	Male	Female
Never married	34.0%	19.0%
Married	47.0%	50.6%
Separated	2.1%	2.1%
Widowed	4.8%	9.1%
Divorced	12.0%	19.2%

Education

Less than 9th grade 3.5%

Some HS, no diploma 6.6%

HS graduate 40.8%

Some college, no degree 14.0%

Associate's degree 11.5%

Bachelor's degree 16.1%

Graduate / professional 7.4%

Metric	%
HS diploma or higher	89.9%
Bachelor's or higher	23.5%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	107	8.0%
Kindergarten	97	7.3%
Elementary school	616	46.2%
High school	301	22.6%
College / grad school	212	15.9%

Employment

Industry of employment

Education & healthcare 20.5%

Manufacturing 16.5%

Retail trade 13.9%

Professional & management 12.3%

Arts, food & hospitality 12.2%

Finance & real estate 6.8%

Public administration 5.8%

Construction 4.8%

Other services 3.0%

Wholesale trade 1.8%

Transportation & utilities 1.0%

Agriculture & mining 0.9%

Information 0.5%

Occupation

Category	%
Management, business & arts	37.2%
Service	21.2%
Sales & office	15.6%
Natural resources & construction	5.9%
Production & transportation	20.1%

Employment type

Type	%
Private sector	79.1%
Government	15.9%
Self-employed	5.1%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	81.7%
Carpool	6.5%
Public transit	0.8%
Walk	0.3%
Work from home	8.4%
Other means	2.2%
Avg commute (minutes)	26.4

Poverty

All people 7.3%

Under 18 years 3.2%

18 and over 7.9%

Married-couple families 3.6%

Female-led households 9.9%

Income support

Source	% of households
Social Security	48.1%
Retirement income	29.3%
Supplemental Security	6.3%
Cash public assistance	3.7%
Food stamps / SNAP	8.2%

Health indicators

Condition	%
Obesity	31.3%
High blood pressure	33.6%
High cholesterol	33.9%
Diabetes	9.3%
Heart disease	6.4%
Stroke	2.9%
Asthma	10.2%
Arthritis	26.2%
Kidney disease	2.7%
Pulmonary disease	7.3%
Cancer	7.4%

Behavior / access	%
Smoking	18.0%
Binge drinking	17.8%
No physical activity	20.3%
Less than 7 hrs sleep	30.9%
Depression	20.7%
Fair or poor health	13.2%
Poor mental health	14.8%
Poor physical health	10.8%
No health insurance	11.2%
Visited doctor (checkup)	73.1%
Visited dentist	69.3%
Cholesterol screening	90.6%
Teeth loss	13.1%

Veterans & disability

Veterans	Count	%
Civilian veterans	619	8.4%

Disability	%
Any disability	16.0%
Under 18	2.4%
18–64 years	11.6%
65 and over	31.4%

Health insurance coverage

Type	%
Private insurance	74.6%
Public insurance	38.6%
No insurance	6.9%
Uninsured under 19	2.2%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	8,356	97.0%
Spanish	107	1.3%
Other Indo-European	57	0.7%
Asian & Pacific Islander	29	0.3%
Other languages	1	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	8,312	96.5%
Born in same state	8,260	95.9%
Born in different state	1,871	21.7%
Foreign born	52	0.6%
Naturalized citizen	302	3.5%
Not a US citizen	144	47.7%

Ancestry

Ancestry	Count	%
Italian	2,001	23.2%
French	1,724	20%
German	523	6.1%
Arab	285	3.3%

Ancestry	Count	%
Polish	26	0.3%
English	24	0.3%
Norwegian	17	0.2%

Technology access

Metric	% of households
Computer access	44.1%
Internet access	89.6%

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

Frequently asked questions about ZIP code 03874

What city is ZIP code 03874 in?

ZIP code 03874 is primarily assigned to Seabrook, New Hampshire.

What county is ZIP code 03874 in?

ZIP code 03874 falls within Rockingham County, New Hampshire.

Does ZIP code 03874 have an older population?

29% of residents in ZIP code 03874 are 65 or older, above the national average of ~17%.

Does ZIP code 03874 have a large retiree population?

48% of households in ZIP code 03874 receive Social Security income, suggesting a significant retiree or disability population.

What is the typical home value in ZIP code 03874?

The median home value in ZIP code 03874 is $377,700.

What is the population of ZIP code 03874?

ZIP code 03874 has an estimated population of 8,614 residents, with a density of 963 people per square mile.

What timezone is ZIP code 03874 in?

ZIP code 03874 observes the EST timezone.