03307 ZIP Code — Loudon, NH

Merrimack County, New Hampshire

ZIP code 03307 is located in Loudon, New Hampshire, within Merrimack County. It covers approximately 46.96 square miles and serves a population of 5,638 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 603.

About ZIP code 03307

The housing stock consists of predominantly single-family detached homes. Most homes were built in the 2000s, giving the area an established character. Median home value is $283,200. Owner-occupancy is high at 86%, well above the national average.

Median household income is $77,473. 51% 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. The average commute of 31 minutes is near the national average.

Educational attainment is near the national average, with 25% of residents holding a bachelor's degree or higher.

Overall, ZIP code 03307 reflects a community defined by high homeownership and a significant Social Security-dependent population.

5,638

population

46.96

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

03307 ZIP code map

Cities in ZIP code 03307

Below are the cities the US Postal Service accepts for ZIP code 03307. Using any city not on this list may result in mail delivery delays.

City	Status
Loudon	Acceptable

Demographics updated 07/2026

Population
Total population	5,638
Population density	120 / sq mi
State FIPS	33
County FIPS	013

Geography
Land area	46.96 sq mi
Water area	0.59 sq mi
Latitude	43.3215
Longitude	-71.4415
Timezone	Eastern (ET)
Area code	603

Total population by age

Gender

Race & ethnicity

Economics updated 07/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	31.6%	30.8%	31.0%
$50k – $100k	30.7%	32.4%	31.2%
$100k – $200k	31.6%	28.6%	28.1%
Over $200k	6.1%	8.1%	9.7%

Demographics & statistics

5,638

Population

120

People per sq mi

51.3

Median age

$77,473

Median household income

$38,192

Per capita income

$283,200

Median home value

$1,248

Median monthly rent

86.1%

Home ownership

9.9%

Poverty rate

2.6%

Unemployment

2,160

Housing units

24.7%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

180

10–14

186

202

15–19

209

20–24

251

25–34

259

291

35–44

299

407

45–54

419

235

55–59

243

434

60–64

446

428

65–74

441

156

75–84

161

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	804	14.3%
18 and over	4,834	85.7%
65 and over	1,263	22.4%
Median age	51.3 years

Race & ethnicity

White 97.1%

Two or more races 2.5%

Asian 0.4%

Group	Count	%
White	5,473	97.1%
Two or more races	141	2.5%
Asian	24	0.4%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	31.6%	30.8%	31.0%
$50k – $100k	30.7%	32.4%	31.2%
$100k – $200k	31.6%	28.6%	28.1%
Over $200k	6.1%	8.1%	9.7%

$10k–$15k 3.4%

$15k–$25k 18.9%

$25k–$35k 2.3%

$35k–$50k 9.8%

$50k–$75k 13.7%

$75k–$100k 11.7%

$100k–$150k 18.7%

$150k–$200k 12.4%

$200k+ 9.1%

Range	% of households
$10k–$15k	3.4%
$15k–$25k	18.9%
$25k–$35k	2.3%
$35k–$50k	9.8%
$50k–$75k	13.7%
$75k–$100k	11.7%
$100k–$150k	18.7%
$150k–$200k	12.4%
$200k+	9.1%
Median income	$77,473

Housing

Home values

Under $50k 2.5%

$50k–$100k 12.6%

$100k–$150k 11.5%

$150k–$200k 6.2%

$200k–$300k 22.3%

$300k–$500k 38.6%

$500k–$1M 6.3%

Housing overview

Metric	Value
Median home value	$283,200
Median rent / month	$1,248
Owner occupied	86.1%
Renter occupied	13.9%
Vacant	7.6%
Single-family detached	79.1%
Large apartment buildings	3.8%
Mobile homes	14.4%
Median rooms	6.0
Avg household size (owned)	2.54

Year built

Era	%
2020 or later	0.0%
2010–2019	9.4%
2000–2009	22.3%
1990–1999	9.8%
1980–1989	18.1%
1970–1979	13.6%
1960–1969	4.9%
1950–1959	6.1%
1940–1949	1.3%
1939 or earlier	14.6%

Bedrooms

Size	% of units
No bedroom (studio)	1.5%
1 bedroom	7.0%
2 bedrooms	23.8%
3 bedrooms	52.4%
4 bedrooms	12.5%
5+ bedrooms	2.8%

Vehicles per household

Vehicles	% of households
No vehicle	2.4%
1 vehicle	14.9%
2 vehicles	46.2%
3 or more	36.5%

Heating fuel

Fuel type	%
Utility gas	8.1%
Electricity	1.5%
Propane / LP gas	24.3%
Fuel oil	42.3%
Wood	16.9%

Households & families

Household type	Count	%
Married-couple family	1,561	68.1%
Cohabiting couple	269	11.7%
Male householder, no spouse	140	6.1%
Female householder, no spouse	321	14.0%
Households with children under 18	493	21.5%
Households with seniors (65+)	844	36.8%
Average household size	2.46

Marital status

Status	Male	Female
Never married	25.3%	21.1%
Married	62.7%	62.7%
Separated	1.7%	0.7%
Widowed	1.6%	6.3%
Divorced	8.7%	9.2%

Education

Less than 9th grade 0.5%

Some HS, no diploma 7.3%

HS graduate 39.8%

Some college, no degree 14.5%

Associate's degree 13.1%

Bachelor's degree 17.4%

Graduate / professional 7.3%

Metric	%
HS diploma or higher	92.1%
Bachelor's or higher	24.7%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	33	3.6%
Kindergarten	27	3.0%
Elementary school	397	43.7%
High school	282	31.0%
College / grad school	170	18.7%

Employment

Industry of employment

Education & healthcare 17.9%

Retail trade 14.6%

Other services 12.3%

Construction 11.6%

Manufacturing 9.9%

Arts, food & hospitality 6.7%

Professional & management 6.6%

Wholesale trade 5.8%

Finance & real estate 5.8%

Public administration 5.7%

Transportation & utilities 2.1%

Agriculture & mining 0.5%

Information 0.5%

Occupation

Category	%
Management, business & arts	33.4%
Service	17.5%
Sales & office	21.5%
Natural resources & construction	16.4%
Production & transportation	11.2%

Employment type

Type	%
Private sector	82.4%
Government	11.3%
Self-employed	6.3%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	87.2%
Carpool	1.8%
Public transit	0.0%
Walk	0.0%
Work from home	8.7%
Other means	2.3%
Avg commute (minutes)	31.3

Poverty

All people 9.9%

Under 18 years 24.0%

18 and over 7.6%

Married-couple families 0.0%

Female-led households 15.4%

Income support

Source	% of households
Social Security	50.9%
Retirement income	32.4%
Supplemental Security	5.5%
Cash public assistance	5.2%
Food stamps / SNAP	11.1%

Health indicators

Condition	%
Obesity	30.2%
High blood pressure	29.3%
High cholesterol	29.1%
Diabetes	7.8%
Heart disease	5.2%
Stroke	2.4%
Asthma	11.0%
Arthritis	26.3%
Kidney disease	2.3%
Pulmonary disease	6.0%
Cancer	6.5%

Behavior / access	%
Smoking	16.8%
Binge drinking	18.8%
No physical activity	17.6%
Less than 7 hrs sleep	33.0%
Depression	25.0%
Fair or poor health	11.3%
Poor mental health	15.0%
Poor physical health	9.6%
No health insurance	10.4%
Visited doctor (checkup)	73.2%
Visited dentist	69.2%
Cholesterol screening	91.1%
Teeth loss	11.4%

Veterans & disability

Veterans	Count	%
Civilian veterans	437	9.0%

Disability	%
Any disability	16.2%
Under 18	18.2%
18–64 years	10.4%
65 and over	31.4%

Health insurance coverage

Type	%
Private insurance	68.2%
Public insurance	45.9%
No insurance	3.8%
Uninsured under 19	0.6%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	5,518	97.9%
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)	5,555	98.5%
Born in same state	5,491	97.4%
Born in different state	3,566	63.2%
Foreign born	64	1.1%
Naturalized citizen	83	1.5%
Not a US citizen	83	100.0%

Ancestry

Ancestry	Count	%
French	1,411	25%
Italian	950	16.8%
German	508	9%

Ancestry	Count	%
Arab	395	7%
Polish	37	0.7%
English	17	0.3%

Technology access

Metric	% of households
Computer access	40.6%
Internet access	99.0%

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

Frequently asked questions about ZIP code 03307

What city is ZIP code 03307 in?

ZIP code 03307 is primarily assigned to Loudon, New Hampshire.

What county is ZIP code 03307 in?

ZIP code 03307 falls within Merrimack County, New Hampshire.

Does ZIP code 03307 have a large retiree population?

51% of households in ZIP code 03307 receive Social Security income, suggesting a significant retiree or disability population.

Is ZIP code 03307 mostly owner-occupied?

86% of occupied units in ZIP code 03307 are owner-occupied, well above the national average.

What is the population of ZIP code 03307?

ZIP code 03307 has an estimated population of 5,638 residents, with a density of 120 people per square mile.

What is the typical home value in ZIP code 03307?

The median home value in ZIP code 03307 is $283,200.

What timezone is ZIP code 03307 in?

ZIP code 03307 observes the EST timezone.