Gilmanton ZIP Codes — Belknap County, NH

There is one unique ZIP code in Gilmanton, New Hampshire and it is 03237. Area code: 603.

ZIP codes

37.96

sq mi land

1.04

sq mi water

603

area code

Gilmanton, NH ZIP code map

About Gilmanton, NH

Gilmanton is a charming town located in Belknap County, New Hampshire. Known for its scenic beauty and tranquil environment, Gilmanton draws residents and visitors alike with its picturesque landscapes and rich New England charm. The community boasts a close-knit atmosphere, making it an ideal place for families and those seeking a peaceful lifestyle.

Location & geography

Gilmanton is situated in central New Hampshire, providing a convenient location for easy access to neighboring towns and cities. It is about 15 miles northeast of Concord and roughly 14 miles southeast of Laconia, which are both significant urban areas in the region. The town covers a land area of 37.96 square miles, with an additional 1.04 square miles of water, contributing to its diverse landscape of hills and lakes.

Community & economy

The character of Gilmanton is marked by its rural appeal and strong community values, with many residents involved in local events and initiatives. The town's economy is primarily based on small businesses, agriculture, and tourism, with residents enjoying a variety of outdoor activities throughout the year. Daily life in Gilmanton often revolves around family-friendly gatherings, local farms, and events that celebrate the town’s heritage.

Transportation

Gilmanton is accessible via several major highways, including NH Route 107, which connects to nearby towns and enhances travel opportunities. The nearest named airport is Laconia Municipal Airport, located approximately 15 miles away, facilitating both private and commercial aviation. Public transportation options are limited, making personal vehicles the most common means of travel in the area.

History

Gilmanton was founded in 1727, originally established as part of the larger town of Gilford before becoming its own entity. The town was known for key industries such as agriculture and lumber, which played a significant role in its economic development during the 18th and 19th centuries. Notable events include its incorporation in 1793 and its ongoing commitment to preserving its historical landmarks and rural character.

Did you know?

A little-known fact about Gilmanton is that it is home to the Gilmanton Year-Round Library, a unique community resource that has been serving residents for many years. Additionally, the town features various scenic lakes, making it a popular spot for fishing and recreational boating.

ZIP codes for Gilmanton, NH (1)

ZIP code	City	County	Map
03237	Gilmanton	Belknap	View map

Demographics & statistics

2,338

Population

42.5

Median age

$98,542

Median household income

$46,361

Per capita income

$316,000

Median home value

Median monthly rent

92.8%

Home ownership

3.0%

Poverty rate

3.0%

Unemployment

1,275

Housing units

36.8%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

115

15–19

112

20–24

130

25–34

128

147

35–44

144

124

45–54

122

117

55–59

115

137

60–64

134

158

65–74

154

75–84

← Male

Female →

Age summary

Group	Count	%
Under 18	512	21.9%
18 and over	1,826	78.1%
65 and over	374	16.0%
Median age	42.5 years

Race & ethnicity

White 98.9%

Two or more races 0.9%

Asian 0.2%

Group	Count	%
White	2,313	98.9%
Two or more races	20	0.9%
Asian	5	0.2%

Household income

$15k–$25k 3.5%

$25k–$35k 0.9%

$35k–$50k 7.2%

$50k–$75k 15.5%

$75k–$100k 24.1%

$100k–$150k 29.4%

$150k–$200k 6.9%

$200k+ 12.5%

Range	% of households
$15k–$25k	3.5%
$25k–$35k	0.9%
$35k–$50k	7.2%
$50k–$75k	15.5%
$75k–$100k	24.1%
$100k–$150k	29.4%
$150k–$200k	6.9%
$200k+	12.5%
Median income	$98,542

Housing

Home values

$100k–$150k 1.5%

$150k–$200k 4.6%

$200k–$300k 39.3%

$300k–$500k 38.6%

$500k–$1M 13.9%

$1M+ 2.1%

Housing overview

Metric	Value
Median home value	$316,000
Median rent / month	$0
Owner occupied	92.8%
Renter occupied	7.2%
Vacant	33.9%
Single-family detached	94.6%
Large apartment buildings	0.0%
Mobile homes	2.5%
Median rooms	5.6
Avg household size (owned)	2.54

Year built

Era	%
2020 or later	1.2%
2010–2019	6.7%
2000–2009	10.9%
1990–1999	11.9%
1980–1989	19.4%
1970–1979	10.8%
1960–1969	13.1%
1950–1959	16.8%
1940–1949	1.9%
1939 or earlier	7.3%

Bedrooms

Size	% of units
No bedroom (studio)	0.6%
1 bedroom	7.5%
2 bedrooms	33.2%
3 bedrooms	51.5%
4 bedrooms	4.9%
5+ bedrooms	2.3%

Vehicles per household

Vehicles	% of households
No vehicle	0.0%
1 vehicle	18.5%
2 vehicles	49.0%
3 or more	32.4%

Heating fuel

Fuel type	%
Electricity	2.5%
Propane / LP gas	20.0%
Fuel oil	53.0%
Wood	18.1%

Households & families

Household type	Count	%
Married-couple family	555	62.7%
Cohabiting couple	56	6.3%
Male householder, no spouse	134	15.1%
Female householder, no spouse	140	15.8%
Households with children under 18	285	32.2%
Households with seniors (65+)	278	31.4%
Average household size	2.64

Marital status

Status	Male	Female
Never married	26.3%	24.6%
Married	66.1%	58.0%
Separated	0.0%	0.0%
Widowed	2.4%	6.3%
Divorced	5.2%	11.0%

Education

Less than 9th grade 0.0%

Some HS, no diploma 2.5%

HS graduate 26.1%

Some college, no degree 21.0%

Associate's degree 13.6%

Bachelor's degree 18.7%

Graduate / professional 18.1%

Metric	%
HS diploma or higher	97.5%
Bachelor's or higher	36.8%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	35	6.4%
Kindergarten	4	0.7%
Elementary school	172	31.3%
High school	178	32.4%
College / grad school	161	29.3%

Employment

Industry of employment

Education & healthcare 20.6%

Professional & management 15.8%

Construction 10.6%

Manufacturing 9.6%

Public administration 9.3%

Retail trade 9.0%

Arts, food & hospitality 8.8%

Finance & real estate 6.8%

Other services 3.9%

Agriculture & mining 2.5%

Transportation & utilities 2.0%

Wholesale trade 0.9%

Information 0.3%

Occupation

Category	%
Management, business & arts	36.7%
Service	9.3%
Sales & office	23.6%
Natural resources & construction	15.1%
Production & transportation	15.3%

Employment type

Type	%
Private sector	75.2%
Government	21.8%
Self-employed	3.0%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	93.7%
Carpool	4.3%
Public transit	0.0%
Walk	0.0%
Other means	0.0%
Avg commute (minutes)	32.7

Poverty

All people 3.0%

Under 18 years 9.0%

18 and over 1.3%

Married-couple families 0.0%

Female-led households 29.6%

Income support

Source	% of households
Social Security	30.5%
Retirement income	27.9%
Supplemental Security	3.4%
Cash public assistance	1.2%
Food stamps / SNAP	0.9%

Health indicators

Condition	%
High blood pressure	32.4%
High cholesterol	32.8%
Heart disease	6.1%
Stroke	2.7%
Asthma	10.7%
Arthritis	26.2%
Kidney disease	2.6%
Pulmonary disease	6.8%
Cancer	6.9%

Behavior / access	%
Binge drinking	18.3%
No physical activity	20.9%
Less than 7 hrs sleep	31.4%
Fair or poor health	12.0%
Poor mental health	14.0%
Poor physical health	10.3%
No health insurance	9.9%
Visited doctor (checkup)	71.9%
Visited dentist	66.6%
Cholesterol screening	91.6%
Teeth loss	11.2%

Veterans & disability

Veterans	Count	%
Civilian veterans	111	6.1%

Disability	%
Any disability	9.7%
Under 18	5.1%
18–64 years	3.7%
65 and over	39.6%

Health insurance coverage

Type	%
Private insurance	81.3%
Public insurance	27.6%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	2,208	94.4%
Spanish	0	0.0%
Other Indo-European	0	0.0%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	2,254	96.4%
Born in same state	2,254	96.4%
Born in different state	1,301	55.6%
Foreign born	0	0.0%
Naturalized citizen	84	3.6%
Not a US citizen	71	84.5%

Ancestry

Ancestry	Count	%
French	1,005	43%
Italian	444	19%
German	338	14.5%
Arab	235	10.1%

Ancestry	Count	%
Polish	15	0.6%
Norwegian	11	0.5%
Irish	10	0.4%

Technology access

Metric	% of households
Computer access	37.9%
Internet access	95.4%

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

Frequently asked questions

What ZIP codes does Gilmanton, NH have?

Gilmanton, NH has one ZIP code: 03237. Each ZIP code serves a distinct delivery area within the city and surrounding region.