Merrimack ZIP Code List — Hillsborough County, NH

There is one unique ZIP code in Merrimack, New Hampshire and it is 03054. Area code: 603.

ZIP codes

32.57

sq mi land

0.85

sq mi water

603

area code

Merrimack, NH ZIP code map

About Merrimack, NH

Merrimack, New Hampshire, is a charming town located in Hillsborough County. Known for its beautiful landscapes and friendly community, it offers residents a blend of suburban comfort and access to nature. With its rich history and commitment to local culture, Merrimack is a hidden gem in the Granite State.

Location & geography

The town sits in south-central New Hampshire, bordered to the south by Nashua, and is located approximately 45 miles north of Boston. Merrimack's land area encompasses 32.57 square miles, with an additional 0.85 square miles of water, providing a diverse landscape that includes rivers and parks. The Merrimack River flows through the town, contributing to its picturesque terrain and opportunities for outdoor activities.

Community & economy

Merrimack exudes a suburban feel, with a close-knit community that values local engagement and family-oriented activities. The town is home to various industries, including manufacturing and retail, which contribute to its vibrant economy. Daily life in Merrimack is characterized by outdoor recreational pursuits, community events, and access to excellent schools, making it an attractive place for families.

Transportation

Key transportation routes in Merrimack include the Everett Turnpike (Route 3), which provides easy access to neighboring cities and the greater New Hampshire area. The nearest airport is the Manchester-Boston Regional Airport, located about 20 miles to the north. Public transportation options are limited, but local services connect residents to main transit hubs in nearby towns.

History

Merrimack was settled in the early 18th century and was originally part of the town of Nashua. It gained its town status in 1746 and has since evolved with key industries like textiles and manufacturing shaping its development. Notable events in Merrimack's history include the establishment of the Merrimack Premium Outlets, which has strengthened the local economy and tourism.

Did you know?

A little-known fact about Merrimack is that it was once the site of the Merrimack River's first dam, which played a significant role in the region's early industrialization. Additionally, the town is home to several conservation areas, promoting a strong commitment to preserving its natural beauty.

ZIP codes for Merrimack, NH (1)

ZIP code	City	County	Map
03054	Merrimack	Hillsborough	View map

Demographics & statistics

27,139

Population

41.7

Median age

$120,730

Median household income

$52,715

Per capita income

$377,200

Median home value

$1,728

Median monthly rent

88.8%

Home ownership

4.0%

Poverty rate

3.3%

Unemployment

9,187

Housing units

47.8%

Bachelor's or higher

Age distribution

Male Female

704

Under 5

680

704

5–9

680

1,137

10–14

1,098

835

15–19

807

622

20–24

601

1,724

25–34

1,665

1,755

35–44

1,695

1,911

45–54

1,847

1,142

55–59

1,104

949

60–64

916

1,530

65–74

1,479

633

75–84

611

158

85+

152

← Male

Female →

Age summary

Group	Count	%
Under 18	6,068	22.4%
18 and over	21,071	77.6%
65 and over	4,563	16.8%
Median age	41.7 years

Race & ethnicity

White 87.1%

Asian 4.4%

Two or more races 3.2%

Hispanic or Latino 2.5%

Other race 1.5%

Black or African American 1.2%

Group	Count	%
White	24,246	87.1%
Asian	1,238	4.4%
Two or more races	885	3.2%
Hispanic or Latino	703	2.5%
Other race	431	1.5%
Black or African American	337	1.2%

Household income

Under $10k 1.5%

$10k–$15k 1.0%

$15k–$25k 3.7%

$25k–$35k 1.9%

$35k–$50k 5.4%

$50k–$75k 13.2%

$75k–$100k 15.9%

$100k–$150k 24.1%

$150k–$200k 15.0%

$200k+ 18.2%

Range	% of households
Under $10k	1.5%
$10k–$15k	1.0%
$15k–$25k	3.7%
$25k–$35k	1.9%
$35k–$50k	5.4%
$50k–$75k	13.2%
$75k–$100k	15.9%
$100k–$150k	24.1%
$150k–$200k	15.0%
$200k+	18.2%
Median income	$120,730

Housing

Home values

Under $50k 1.9%

$50k–$100k 0.8%

$100k–$150k 2.3%

$150k–$200k 3.3%

$200k–$300k 19.5%

$300k–$500k 51.1%

$500k–$1M 20.1%

$1M+ 0.9%

Housing overview

Metric	Value
Median home value	$377,200
Median rent / month	$1,728
Owner occupied	88.8%
Renter occupied	11.2%
Vacant	1.4%
Single-family detached	67.5%
Large apartment buildings	5.9%
Mobile homes	2.2%
Median rooms	6.5
Avg household size (owned)	2.74

Year built

Era	%
2020 or later	1.1%
2010–2019	3.5%
2000–2009	10.6%
1990–1999	16.4%
1980–1989	32.4%
1970–1979	17.3%
1960–1969	12.2%
1950–1959	2.1%
1940–1949	1.4%
1939 or earlier	3.1%

Bedrooms

Size	% of units
No bedroom (studio)	0.8%
1 bedroom	5.2%
2 bedrooms	28.6%
3 bedrooms	35.7%
4 bedrooms	27.4%
5+ bedrooms	2.3%

Vehicles per household

Vehicles	% of households
No vehicle	2.0%
1 vehicle	24.4%
2 vehicles	45.3%
3 or more	28.3%

Heating fuel

Fuel type	%
Utility gas	34.2%
Electricity	9.8%
Propane / LP gas	23.5%
Fuel oil	27.8%
Wood	2.3%
No fuel used	1.3%

Households & families

Household type	Count	%
Married-couple family	6,184	60.7%
Cohabiting couple	809	7.9%
Male householder, no spouse	1,096	10.8%
Female householder, no spouse	2,091	20.5%
Households with children under 18	3,064	30.1%
Households with seniors (65+)	3,237	31.8%
Average household size	2.65

Marital status

Status	Male	Female
Never married	31.8%	24.6%
Married	59.6%	54.6%
Separated	0.5%	0.6%
Widowed	1.9%	6.9%
Divorced	6.2%	13.3%

Education

Less than 9th grade 1.1%

Some HS, no diploma 2.9%

HS graduate 17.6%

Some college, no degree 17.9%

Associate's degree 12.6%

Bachelor's degree 29.1%

Graduate / professional 18.8%

Metric	%
HS diploma or higher	95.9%
Bachelor's or higher	47.8%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	387	5.8%
Kindergarten	379	5.7%
Elementary school	3,035	45.6%
High school	1,357	20.4%
College / grad school	1,504	22.6%

Employment

Industry of employment

Education & healthcare 22.0%

Manufacturing 15.2%

Professional & management 15.0%

Retail trade 11.2%

Finance & real estate 8.6%

Arts, food & hospitality 6.3%

Other services 5.5%

Construction 4.5%

Transportation & utilities 4.1%

Public administration 3.4%

Information 2.7%

Wholesale trade 1.4%

Occupation

Category	%
Management, business & arts	54.3%
Service	10.1%
Sales & office	19.2%
Natural resources & construction	5.4%
Production & transportation	11.0%

Employment type

Type	%
Private sector	82.3%
Government	12.5%
Self-employed	5.1%
Unpaid family workers	0.1%

Commute

Method	%
Drive alone	75.4%
Carpool	5.0%
Public transit	0.4%
Walk	0.8%
Other means	1.8%
Avg commute (minutes)	26.6

Poverty

All people 4.0%

Under 18 years 3.8%

18 and over 4.1%

Married-couple families 1.4%

Female-led households 9.0%

Income support

Source	% of households
Social Security	30.0%
Retirement income	25.6%
Supplemental Security	3.7%
Cash public assistance	2.9%
Food stamps / SNAP	2.0%

Health indicators

Condition	%
High blood pressure	27.4%
High cholesterol	29.2%
Heart disease	4.8%
Stroke	2.1%
Asthma	11.0%
Arthritis	22.7%
Kidney disease	2.1%
Pulmonary disease	4.9%
Cancer	6.3%

Behavior / access	%
Binge drinking	18.7%
No physical activity	17.3%
Less than 7 hrs sleep	32.4%
Fair or poor health	9.5%
Poor mental health	13.6%
Poor physical health	8.3%
No health insurance	8.5%
Visited doctor (checkup)	71.9%
Visited dentist	73.8%
Cholesterol screening	91.9%
Teeth loss	9.0%

Veterans & disability

Veterans	Count	%
Civilian veterans	1,486	7.1%

Disability	%
Any disability	8.8%
Under 18	3.5%
18–64 years	6.8%
65 and over	23.0%

Health insurance coverage

Type	%
Private insurance	87.7%
Public insurance	22.3%
Uninsured under 19	1.5%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	25,755	94.9%
Spanish	354	1.4%
Other Indo-European	182	0.7%
Asian & Pacific Islander	30	0.1%
Other languages	141	0.5%

Place of birth & citizenship

Origin	Count	%
Native born (US)	25,375	93.5%
Born in same state	25,042	92.3%
Born in different state	10,754	39.6%
Foreign born	333	1.2%
Naturalized citizen	1,764	6.5%
Not a US citizen	1,357	76.9%

Ancestry

Ancestry	Count	%
Italian	5,726	21.1%
French	4,726	17.4%
German	2,127	7.8%
Arab	1,225	4.5%
Norwegian	115	0.4%

Ancestry	Count	%
Polish	110	0.4%
English	52	0.2%
Irish	51	0.2%
Dutch	19	0.1%

Technology access

Metric	% of households
Computer access	37.5%
Internet access	97.3%

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

Frequently asked questions

What is the ZIP code for Merrimack, NH?

Merrimack, NH has one ZIP code: 03054.

What is the main ZIP code for Merrimack, NH?

The primary ZIP code for Merrimack, NH is 03054. The city uses area code 603 for phone service.

What county is Merrimack, NH in?

Merrimack is located in Hillsborough County, New Hampshire.

How many ZIP codes are in Merrimack, NH?

Merrimack, NH has 1 ZIP code.

What ZIP code should I use when mailing a package to a business located in downtown Merrimack near the town center?

Packages to downtown Merrimack and the town center area should be addressed to ZIP code 03054, which serves the entire municipality.

If I'm sending mail to a residential address in the Merrimack village area along the Souhegan River, what ZIP code do I need?

Residential addresses in the Merrimack village area and throughout the town use ZIP code 03054.