03809 ZIP Code — Alton, NH

Belknap County, New Hampshire

ZIP code 03809 is located in Alton, New Hampshire, within Belknap County. It covers approximately 40.08 square miles and serves a population of 3,617 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 603.

About ZIP code 03809

The housing stock consists of predominantly single-family detached homes. Most homes were built in the 1960s, giving the area an established character. Median home value is $279,500. Owner-occupancy is high at 89%, well above the national average.

Median household income is $86,116. The poverty rate of 5% is below the national average. 34% 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. An above-average commute of 37 minutes suggests many residents work outside the immediate area.

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

Notable community characteristics include a notable veteran presence at 13% of civilians, above the national average of 7%.

Overall, ZIP code 03809 reflects a community defined by a strong veteran community, high homeownership, and a significant Social Security-dependent population.

3,617

population

40.08

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

03809 ZIP code map

Cities in ZIP code 03809

Below are the cities the US Postal Service accepts for ZIP code 03809. Using any city not on this list may result in mail delivery delays.

City	Status
Alton	Preferred

Nearby ZIP codes

03810 Alton Bay (3 mi) 03855 New Durham (4.5 mi) 03837 Gilmanton Iron Works (5.3 mi) 03225 Center Barnstead (7.9 mi) 03237 Gilmanton (8.6 mi) 03887 Union (8.9 mi) 03894 Wolfeboro (9 mi) 03851 Milton (10.7 mi) 03835 Farmington (11 mi) 03218 Barnstead (11.2 mi) 03853 Mirror Lake (11.9 mi) 03220 Belmont (12 mi)

Demographics updated 05/2026

Population
Total population	3,617
Population density	90 / sq mi
State FIPS	33
County FIPS	001

Geography
Land area	40.08 sq mi
Water area	0.84 sq mi
Latitude	43.4739
Longitude	-71.2325
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	20.0%	36.9%	31.0%
$50k – $100k	40.9%	31.7%	31.2%
$100k – $200k	32.9%	25.5%	28.1%
Over $200k	6.1%	5.9%	9.7%

Demographics & statistics

3,617

Population

People per sq mi

47.0

Median age

$86,116

Median household income

$39,480

Per capita income

$279,500

Median home value

$577

Median monthly rent

89.0%

Home ownership

5.4%

Poverty rate

3.4%

Unemployment

1,621

Housing units

24.4%

Bachelor's or higher

Age distribution

Male Female

102

Under 5

130

5–9

119

10–14

15–19

105

20–24

217

25–34

199

174

35–44

160

202

45–54

186

282

55–59

260

124

60–64

114

192

65–74

177

159

75–84

146

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	679	18.8%
18 and over	2,938	81.2%
65 and over	722	20.0%
Median age	47.0 years

Race & ethnicity

White 96.5%

Two or more races 1.5%

Hispanic or Latino 1.3%

Asian 0.3%

Native Hawaiian / Pacific Islander 0.3%

Group	Count	%
White	3,537	96.5%
Two or more races	56	1.5%
Hispanic or Latino	49	1.3%
Asian	12	0.3%
Native Hawaiian / Pacific Islander	12	0.3%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	20.0%	36.9%	31.0%
$50k – $100k	40.9%	31.7%	31.2%
$100k – $200k	32.9%	25.5%	28.1%
Over $200k	6.1%	5.9%	9.7%

Under $10k 3.6%

$10k–$15k 1.1%

$15k–$25k 3.9%

$25k–$35k 5.3%

$35k–$50k 14.5%

$50k–$75k 15.3%

$75k–$100k 11.0%

$100k–$150k 21.0%

$150k–$200k 15.4%

$200k+ 9.0%

Range	% of households
Under $10k	3.6%
$10k–$15k	1.1%
$15k–$25k	3.9%
$25k–$35k	5.3%
$35k–$50k	14.5%
$50k–$75k	15.3%
$75k–$100k	11.0%
$100k–$150k	21.0%
$150k–$200k	15.4%
$200k+	9.0%
Median income	$86,116

Housing

Home values

Under $50k 0.7%

$50k–$100k 7.3%

$100k–$150k 5.2%

$150k–$200k 12.6%

$200k–$300k 29.9%

$300k–$500k 30.9%

$500k–$1M 11.2%

$1M+ 2.1%

Housing overview

Metric	Value
Median home value	$279,500
Median rent / month	$577
Owner occupied	89.0%
Renter occupied	11.0%
Vacant	23.7%
Single-family detached	81.5%
Large apartment buildings	0.6%
Mobile homes	11.8%
Median rooms	5.8
Avg household size (owned)	2.82

Year built

Era	%
2020 or later	0.8%
2010–2019	11.0%
2000–2009	18.1%
1990–1999	12.0%
1980–1989	12.4%
1970–1979	10.7%
1960–1969	19.7%
1950–1959	3.4%
1940–1949	0.9%
1939 or earlier	10.9%

Bedrooms

Size	% of units
No bedroom (studio)	3.7%
1 bedroom	7.9%
2 bedrooms	24.9%
3 bedrooms	46.4%
4 bedrooms	11.0%
5+ bedrooms	6.2%

Vehicles per household

Vehicles	% of households
No vehicle	1.2%
1 vehicle	22.2%
2 vehicles	49.6%
3 or more	27.0%

Heating fuel

Fuel type	%
Utility gas	3.0%
Electricity	2.9%
Propane / LP gas	18.2%
Fuel oil	66.3%
Wood	7.3%

Households & families

Household type	Count	%
Married-couple family	980	72.6%
Cohabiting couple	47	3.5%
Male householder, no spouse	145	10.7%
Female householder, no spouse	178	13.2%
Households with children under 18	330	24.4%
Households with seniors (65+)	470	34.8%
Average household size	2.68

Marital status

Status	Male	Female
Never married	27.3%	25.3%
Married	65.4%	64.5%
Separated	0.0%	0.0%
Widowed	4.9%	7.1%
Divorced	2.4%	3.0%

Education

Less than 9th grade 0.4%

Some HS, no diploma 5.5%

HS graduate 31.8%

Some college, no degree 21.3%

Associate's degree 16.6%

Bachelor's degree 13.5%

Graduate / professional 10.9%

Metric	%
HS diploma or higher	94.1%
Bachelor's or higher	24.4%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	139	18.8%
Kindergarten	0	0.0%
Elementary school	366	49.5%
High school	141	19.1%
College / grad school	93	12.6%

Employment

Industry of employment

Education & healthcare 24.2%

Retail trade 14.3%

Manufacturing 12.6%

Arts, food & hospitality 11.2%

Finance & real estate 9.5%

Construction 7.9%

Other services 6.6%

Professional & management 4.4%

Transportation & utilities 3.9%

Public administration 3.0%

Wholesale trade 2.3%

Occupation

Category	%
Management, business & arts	40.2%
Service	16.2%
Sales & office	25.8%
Natural resources & construction	8.8%
Production & transportation	9.1%

Employment type

Type	%
Private sector	81.9%
Government	12.6%
Self-employed	5.5%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	73.7%
Carpool	15.3%
Public transit	0.0%
Walk	1.1%
Work from home	9.8%
Other means	0.0%
Avg commute (minutes)	36.8

Poverty

All people 5.4%

Under 18 years 0.0%

18 and over 6.6%

Married-couple families 4.8%

Female-led households 0.0%

Income support

Source	% of households
Social Security	33.9%
Retirement income	45.9%
Supplemental Security	1.3%
Cash public assistance	1.9%
Food stamps / SNAP	3.0%

Health indicators

Condition	%
Obesity	33.5%
High blood pressure	31.6%
High cholesterol	32.9%
Diabetes	8.7%
Heart disease	6.0%
Stroke	2.6%
Asthma	10.5%
Arthritis	26.0%
Kidney disease	2.5%
Pulmonary disease	6.4%
Cancer	7.3%

Behavior / access	%
Smoking	15.3%
Binge drinking	18.3%
No physical activity	19.7%
Less than 7 hrs sleep	30.4%
Depression	20.5%
Fair or poor health	11.1%
Poor mental health	13.6%
Poor physical health	9.6%
No health insurance	9.9%
Visited doctor (checkup)	72.0%
Visited dentist	69.5%
Cholesterol screening	92.0%
Teeth loss	10.2%

Veterans & disability

Veterans	Count	%
Civilian veterans	369	12.6%

Disability	%
Any disability	12.3%
Under 18	0.0%
18–64 years	8.5%
65 and over	35.5%

Health insurance coverage

Type	%
Private insurance	82.8%
Public insurance	28.6%
No insurance	3.1%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	3,422	94.6%
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)	3,530	97.6%
Born in same state	3,503	96.8%
Born in different state	1,897	52.4%
Foreign born	27	0.7%
Naturalized citizen	87	2.4%
Not a US citizen	70	80.5%

Ancestry

Ancestry	Count	%
Italian	766	21.2%
French	706	19.5%
German	214	5.9%
Polish	101	2.8%

Ancestry	Count	%
Arab	70	1.9%
English	62	1.7%
Norwegian	45	1.2%

Technology access

Metric	% of households
Computer access	37.3%
Internet access	92.3%

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

Frequently asked questions about ZIP code 03809

What city is ZIP code 03809 in?

ZIP code 03809 is primarily assigned to Alton, New Hampshire.

What county is ZIP code 03809 in?

ZIP code 03809 falls within Belknap County, New Hampshire.

Is ZIP code 03809 mostly owner-occupied?

89% of occupied units in ZIP code 03809 are owner-occupied, well above the national average.

Does ZIP code 03809 have a large veteran population?

13% of civilians in ZIP code 03809 are veterans, above the national average of ~7%.

What is the population of ZIP code 03809?

ZIP code 03809 has an estimated population of 3,617 residents, with a density of 90 people per square mile.

What is the typical home value in ZIP code 03809?

The median home value in ZIP code 03809 is $279,500.

What timezone is ZIP code 03809 in?

ZIP code 03809 observes the EST timezone.