03455 ZIP Code — Marlborough, NH

Cheshire County, New Hampshire

ZIP code 03455 is located in Marlborough, New Hampshire, within Cheshire County. It covers approximately 23.78 square miles and serves a population of 2,292 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 603.

About ZIP code 03455

The housing stock consists of a mix of housing types. Most homes were built in the pre-1940, giving the area an established character. Median home value is $242,000. Owner-occupancy sits near the national average at 65%.

The gap between median ($70,850) and mean household income suggests income inequality — a small number of higher earners pull the average up. 39% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with manufacturing as the leading industry. The average commute of 20 minutes is near the national average.

Educational attainment is near the national average, with 36% of residents holding a bachelor's degree or higher.

2,292

population

23.78

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

03455 ZIP code map

Cities in ZIP code 03455

Below are the cities the US Postal Service accepts for ZIP code 03455. Using any city not on this list may result in mail delivery delays.

City	Status
Marlborough	Preferred

Nearby ZIP codes

03444 Dublin (5.1 mi) 03450 Harrisville (5.2 mi) 03465 Troy (5.3 mi) 03435 Keene (5.8 mi) 03446 Swanzey (7 mi) 03431 Keene (7.1 mi) 03445 Sullivan (7.5 mi) 03452 Jaffrey (7.8 mi) 03448 Gilsum (9.5 mi) 03449 Hancock (10 mi) 03447 Fitzwilliam (10.1 mi) 03470 Winchester (11.8 mi)

Demographics updated 06/2026

Population
Total population	2,292
Population density	96 / sq mi
State FIPS	33
County FIPS	005

Geography
Land area	23.78 sq mi
Water area	0.27 sq mi
Latitude	42.9081
Longitude	-72.1712
Timezone	Eastern (ET)
Area code	603

Total population by age

Gender

Race & ethnicity

Economics updated 06/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	36.4%	36.3%	31.0%
$50k – $100k	27.3%	35.9%	31.2%
$100k – $200k	29.6%	22.5%	28.1%
Over $200k	6.7%	5.4%	9.7%

Demographics & statistics

2,292

Population

People per sq mi

41.9

Median age

$70,850

Median household income

$45,419

Per capita income

$242,000

Median home value

$1,070

Median monthly rent

65.1%

Home ownership

14.4%

Poverty rate

0.3%

Unemployment

694

Housing units

35.8%

Bachelor's or higher

Age distribution

Male Female

Under 5

120

5–9

10–14

15–19

118

20–24

25–34

173

35–44

214

124

45–54

154

55–59

116

60–64

65–74

114

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	549	24.0%
18 and over	1,743	76.0%
65 and over	396	17.3%
Median age	41.9 years

Race & ethnicity

White 96.1%

Two or more races 2.7%

Hispanic or Latino 0.8%

American Indian / Alaska Native 0.4%

Group	Count	%
White	2,219	96.1%
Two or more races	62	2.7%
Hispanic or Latino	18	0.8%
American Indian / Alaska Native	10	0.4%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	36.4%	36.3%	31.0%
$50k – $100k	27.3%	35.9%	31.2%
$100k – $200k	29.6%	22.5%	28.1%
Over $200k	6.7%	5.4%	9.7%

Under $10k 2.1%

$10k–$15k 4.0%

$15k–$25k 14.4%

$25k–$35k 8.6%

$35k–$50k 6.8%

$50k–$75k 16.7%

$75k–$100k 11.2%

$100k–$150k 21.0%

$150k–$200k 9.0%

$200k+ 6.3%

Range	% of households
Under $10k	2.1%
$10k–$15k	4.0%
$15k–$25k	14.4%
$25k–$35k	8.6%
$35k–$50k	6.8%
$50k–$75k	16.7%
$75k–$100k	11.2%
$100k–$150k	21.0%
$150k–$200k	9.0%
$200k+	6.3%
Median income	$70,850

Housing

Home values

Under $50k 4.7%

$50k–$100k 3.5%

$100k–$150k 5.5%

$150k–$200k 14.1%

$200k–$300k 36.3%

$300k–$500k 28.6%

$500k–$1M 7.4%

Housing overview

Metric	Value
Median home value	$242,000
Median rent / month	$1,070
Owner occupied	65.1%
Renter occupied	34.9%
Vacant	6.9%
Single-family detached	64.6%
Large apartment buildings	7.1%
Mobile homes	2.6%
Median rooms	5.4
Avg household size (owned)	2.61

Year built

Era	%
2020 or later	0.0%
2010–2019	4.1%
2000–2009	5.7%
1990–1999	13.8%
1980–1989	14.0%
1970–1979	18.7%
1960–1969	4.4%
1950–1959	1.6%
1940–1949	2.9%
1939 or earlier	34.8%

Bedrooms

Size	% of units
No bedroom (studio)	2.7%
1 bedroom	14.6%
2 bedrooms	25.3%
3 bedrooms	43.3%
4 bedrooms	8.6%
5+ bedrooms	5.5%

Vehicles per household

Vehicles	% of households
No vehicle	3.4%
1 vehicle	34.3%
2 vehicles	38.0%
3 or more	24.2%

Heating fuel

Fuel type	%
Utility gas	6.3%
Electricity	3.1%
Propane / LP gas	11.6%
Fuel oil	55.2%
Wood	20.1%
No fuel used	2.4%

Households & families

Household type	Count	%
Married-couple family	451	47.1%
Cohabiting couple	100	10.4%
Male householder, no spouse	149	15.6%
Female householder, no spouse	257	26.9%
Households with children under 18	296	30.9%
Households with seniors (65+)	315	32.9%
Average household size	2.39

Marital status

Status	Male	Female
Never married	32.5%	24.9%
Married	51.7%	45.8%
Separated	0.0%	0.8%
Widowed	2.2%	9.8%
Divorced	13.6%	18.7%

Education

Less than 9th grade 1.2%

Some HS, no diploma 6.2%

HS graduate 31.4%

Some college, no degree 22.2%

Associate's degree 3.3%

Bachelor's degree 22.0%

Graduate / professional 13.7%

Metric	%
HS diploma or higher	92.6%
Bachelor's or higher	35.8%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	22	5.0%
Kindergarten	7	1.6%
Elementary school	144	32.9%
High school	172	39.3%
College / grad school	93	21.2%

Employment

Industry of employment

Manufacturing 30.7%

Education & healthcare 22.5%

Retail trade 11.2%

Finance & real estate 7.4%

Construction 6.6%

Arts, food & hospitality 6.3%

Professional & management 6.2%

Other services 3.1%

Wholesale trade 2.5%

Transportation & utilities 1.8%

Public administration 0.8%

Agriculture & mining 0.4%

Information 0.4%

Occupation

Category	%
Management, business & arts	37.1%
Service	7.7%
Sales & office	28.0%
Natural resources & construction	8.4%
Production & transportation	18.9%

Employment type

Type	%
Private sector	80.2%
Government	14.7%
Self-employed	4.2%
Unpaid family workers	0.9%

Commute

Method	%
Drive alone	74.0%
Carpool	12.3%
Public transit	0.0%
Walk	1.6%
Work from home	11.0%
Other means	1.1%
Avg commute (minutes)	19.9

Poverty

All people 14.4%

Under 18 years 25.3%

18 and over 10.9%

Married-couple families 1.6%

Female-led households 54.4%

Income support

Source	% of households
Social Security	38.7%
Retirement income	26.0%
Supplemental Security	4.9%
Cash public assistance	11.4%
Food stamps / SNAP	6.6%

Health indicators

Condition	%
Obesity	31.6%
High blood pressure	31.1%
High cholesterol	29.5%
Diabetes	9.0%
Heart disease	6.5%
Stroke	2.9%
Asthma	11.0%
Arthritis	28.1%
Kidney disease	2.8%
Pulmonary disease	7.0%
Cancer	7.4%

Behavior / access	%
Smoking	15.8%
Binge drinking	17.3%
No physical activity	20.6%
Less than 7 hrs sleep	34.0%
Depression	23.6%
Fair or poor health	13.2%
Poor mental health	15.0%
Poor physical health	10.6%
No health insurance	11.2%
Visited doctor (checkup)	67.7%
Visited dentist	64.0%
Cholesterol screening	90.6%
Teeth loss	13.3%

Veterans & disability

Veterans	Count	%
Civilian veterans	168	9.6%

Disability	%
Any disability	12.0%
Under 18	0.0%
18–64 years	13.1%
65 and over	24.5%

Health insurance coverage

Type	%
Private insurance	70.3%
Public insurance	40.2%
No insurance	4.6%
Uninsured under 19	1.4%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	2,075	90.5%
Spanish	1	0.0%
Other Indo-European	0	0.0%
Asian & Pacific Islander	0	0.0%
Other languages	1	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	2,285	99.7%
Born in same state	2,272	99.1%
Born in different state	1,506	65.7%
Foreign born	13	0.6%
Naturalized citizen	7	0.3%
Not a US citizen	1	14.3%

Ancestry

Ancestry	Count	%
French	523	22.8%
Italian	364	15.9%
German	159	6.9%
Arab	82	3.6%

Ancestry	Count	%
Polish	13	0.6%
Irish	5	0.2%
Dutch	4	0.2%

Technology access

Metric	% of households
Computer access	41.8%
Internet access	88.6%

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

Frequently asked questions about ZIP code 03455

What city is ZIP code 03455 in?

ZIP code 03455 is primarily assigned to Marlborough, New Hampshire.

What county is ZIP code 03455 in?

ZIP code 03455 falls within Cheshire County, New Hampshire.

Does ZIP code 03455 have a large retiree population?

39% of households in ZIP code 03455 receive Social Security income, suggesting a significant retiree or disability population.

Does ZIP code 03455 have a large veteran population?

10% of civilians in ZIP code 03455 are veterans, above the national average of ~7%.

What is the population of ZIP code 03455?

ZIP code 03455 has an estimated population of 2,292 residents, with a density of 96 people per square mile.

What is the median household income in ZIP code 03455?

The median household income in ZIP code 03455 is $70,850, below the national median of ~$75,000.

What timezone is ZIP code 03455 in?

ZIP code 03455 observes the EST timezone.