Sandown ZIP Codes — Rockingham County, NH

There is one unique ZIP code in Sandown, New Hampshire and it is 03873. Area code: 603.

ZIP codes

13.94

sq mi land

0.49

sq mi water

603

area code

Sandown, NH ZIP code map

About Sandown, NH

Sandown, New Hampshire is a charming town located in Rockingham County. Known for its picturesque rural landscape and a tight-knit community, Sandown offers a peaceful retreat from the hustle and bustle of city life. With a single ZIP code of 03873, this small town has a unique character that attracts both residents and visitors alike.

Location & geography

Sandown is situated approximately 35 miles northeast of Boston and is bordered by several other New Hampshire towns, including Derry to the northwest and Atkinson to the southwest. The town covers a land area of 13.94 square miles, complemented by a small water area of 0.49 square miles. The terrain is predominantly wooded and hilly, providing a scenic environment for outdoor activities.

Community & economy

The character of Sandown is defined by its friendly and welcoming atmosphere, with residents often engaging in community events and local gatherings. The town has a blend of residential neighborhoods and open spaces, supporting industries such as small businesses and local agriculture. Daily life in Sandown combines the tranquility of rural living with access to larger neighboring towns for shopping and services.

Transportation

Sandown is accessible via several local roads, with Route 121 being the main highway running through the town, connecting it to surrounding areas. For air travel, the nearest named airport is Manchester-Boston Regional Airport, located about 20 miles to the northwest. Public transit options are limited, encouraging residents to rely on personal vehicles for commuting.

History

Founded in the 18th century, Sandown's early economy was largely based on agriculture and timber, critical to its growth and development. The town was incorporated in 1768 and has maintained its rural charm over the years, hosting various local events that celebrate its history and community spirit. Notable events in Sandown's history include community fairs and seasonal festivals that bring residents together.

Did you know?

A surprising fact about Sandown is that it is home to the picturesque Sandown Town Forest, a hidden gem for locals and visitors who enjoy hiking and nature walks. Additionally, the town celebrates its historical roots with events that reflect its agricultural heritage.

ZIP codes for Sandown, NH (1)

ZIP code	City	County	Map
03873	Sandown	Rockingham	View map

Demographics & statistics

6,536

Population

38.8

Median age

$125,888

Median household income

$44,041

Per capita income

$374,800

Median home value

$1,807

Median monthly rent

84.5%

Home ownership

10.3%

Poverty rate

4.4%

Unemployment

1,933

Housing units

29.8%

Bachelor's or higher

Age distribution

Male Female

191

Under 5

213

126

5–9

140

269

10–14

300

231

15–19

258

170

20–24

191

348

25–34

390

380

35–44

426

510

45–54

570

322

55–59

361

189

60–64

211

270

65–74

303

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	1,544	23.6%
18 and over	4,992	76.4%
65 and over	740	11.3%
Median age	38.8 years

Race & ethnicity

White 93.5%

Hispanic or Latino 2.6%

Two or more races 2.2%

Other race 1.1%

Black or African American 0.6%

Group	Count	%
White	6,273	93.5%
Hispanic or Latino	172	2.6%
Two or more races	148	2.2%
Other race	76	1.1%
Black or African American	39	0.6%

Household income

Under $10k 1.5%

$10k–$15k 8.4%

$25k–$35k 1.4%

$35k–$50k 9.8%

$50k–$75k 10.6%

$75k–$100k 12.6%

$100k–$150k 15.5%

$150k–$200k 18.9%

$200k+ 21.4%

Range	% of households
Under $10k	1.5%
$10k–$15k	8.4%
$25k–$35k	1.4%
$35k–$50k	9.8%
$50k–$75k	10.6%
$75k–$100k	12.6%
$100k–$150k	15.5%
$150k–$200k	18.9%
$200k+	21.4%
Median income	$125,888

Housing

Home values

$50k–$100k 0.2%

$100k–$150k 1.7%

$150k–$200k 0.9%

$200k–$300k 14.2%

$300k–$500k 60.3%

$500k–$1M 22.8%

Housing overview

Metric	Value
Median home value	$374,800
Median rent / month	$1,807
Owner occupied	84.5%
Renter occupied	15.5%
Vacant	3.0%
Single-family detached	83.5%
Large apartment buildings	0.0%
Mobile homes	1.5%
Median rooms	5.9
Avg household size (owned)	3.02

Year built

Era	%
2020 or later	0.0%
2010–2019	7.0%
2000–2009	18.3%
1990–1999	7.1%
1980–1989	30.9%
1970–1979	10.5%
1960–1969	4.4%
1950–1959	2.5%
1940–1949	5.1%
1939 or earlier	14.3%

Bedrooms

Size	% of units
No bedroom (studio)	0.8%
1 bedroom	0.7%
2 bedrooms	31.6%
3 bedrooms	47.2%
4 bedrooms	14.8%
5+ bedrooms	4.9%

Vehicles per household

Vehicles	% of households
No vehicle	1.6%
1 vehicle	17.5%
2 vehicles	37.7%
3 or more	43.2%

Heating fuel

Fuel type	%
Electricity	11.1%
Propane / LP gas	34.5%
Fuel oil	48.8%
Wood	2.8%
No fuel used	0.8%

Households & families

Household type	Count	%
Married-couple family	1,467	66.5%
Cohabiting couple	218	9.9%
Male householder, no spouse	177	8.0%
Female householder, no spouse	344	15.6%
Households with children under 18	928	42.1%
Households with seniors (65+)	534	24.2%
Average household size	2.96

Marital status

Status	Male	Female
Never married	28.3%	27.2%
Married	63.6%	57.9%
Separated	0.5%	6.3%
Widowed	1.5%	2.3%
Divorced	6.1%	6.3%

Education

Less than 9th grade 1.2%

Some HS, no diploma 4.3%

HS graduate 26.0%

Some college, no degree 23.5%

Associate's degree 15.2%

Bachelor's degree 15.7%

Graduate / professional 14.0%

Metric	%
HS diploma or higher	94.5%
Bachelor's or higher	29.8%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	39	2.8%
Kindergarten	49	3.5%
Elementary school	651	46.9%
High school	398	28.7%
College / grad school	251	18.1%

Employment

Industry of employment

Education & healthcare 19.5%

Manufacturing 18.2%

Professional & management 11.5%

Construction 9.8%

Retail trade 9.8%

Arts, food & hospitality 8.9%

Finance & real estate 7.1%

Transportation & utilities 3.9%

Information 3.3%

Wholesale trade 2.8%

Other services 2.5%

Public administration 2.2%

Agriculture & mining 0.4%

Occupation

Category	%
Management, business & arts	39.5%
Service	15.8%
Sales & office	21.8%
Natural resources & construction	11.7%
Production & transportation	11.4%

Employment type

Type	%
Private sector	85.9%
Government	8.3%
Self-employed	5.8%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	80.0%
Carpool	3.2%
Public transit	0.0%
Walk	0.8%
Other means	0.0%
Avg commute (minutes)	34.6

Poverty

All people 10.3%

Under 18 years 20.6%

18 and over 7.2%

Married-couple families 0.0%

Female-led households 70.8%

Income support

Source	% of households
Social Security	35.4%
Retirement income	24.8%
Supplemental Security	3.1%
Cash public assistance	1.5%
Food stamps / SNAP	1.5%

Health indicators

Condition	%
High blood pressure	28.1%
High cholesterol	30.0%
Heart disease	4.6%
Stroke	2.1%
Asthma	10.2%
Arthritis	21.4%
Kidney disease	2.1%
Pulmonary disease	5.4%
Cancer	5.8%

Behavior / access	%
Binge drinking	20.1%
No physical activity	16.7%
Less than 7 hrs sleep	30.8%
Fair or poor health	10.4%
Poor mental health	14.9%
Poor physical health	9.2%
No health insurance	9.6%
Visited doctor (checkup)	71.3%
Visited dentist	72.9%
Cholesterol screening	90.7%
Teeth loss	10.6%

Veterans & disability

Veterans	Count	%
Civilian veterans	255	5.1%

Disability	%
Any disability	12.4%
Under 18	2.1%
18–64 years	10.8%
65 and over	43.1%

Health insurance coverage

Type	%
Private insurance	75.7%
Public insurance	29.7%
Uninsured under 19	8.2%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	6,132	93.8%
Spanish	33	0.5%
Other Indo-European	23	0.4%
Asian & Pacific Islander	1	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	6,259	95.8%
Born in same state	6,199	94.8%
Born in different state	1,538	23.5%
Foreign born	60	0.9%
Naturalized citizen	277	4.2%
Not a US citizen	152	54.9%

Ancestry

Ancestry	Count	%
Italian	1,619	24.8%
French	1,041	15.9%
Arab	598	9.1%

Ancestry	Count	%
German	544	8.3%
English	1	0%

Technology access

Metric	% of households
Computer access	33.8%
Internet access	98.6%

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

Frequently asked questions

What ZIP codes does Sandown, NH have?

Sandown, NH has one ZIP code: 03873. Each ZIP code serves a distinct delivery area within the city and surrounding region.