03766 ZIP Code — Lebanon, NH

Grafton County, New Hampshire

ZIP code 03766 is located in Lebanon, New Hampshire, within Grafton County. It covers approximately 31.98 square miles and serves a population of 10,334 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 603.

About ZIP code 03766

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 $311,000. Owner-occupancy sits near the national average at 57%.

Median household income is $95,938. 33% 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 16 minutes is near the national average.

Educational attainment is high — 54% of residents hold a bachelor's degree or higher, well above the national average of 33%.

Overall, ZIP code 03766 reflects a community defined by a highly educated population and a significant Social Security-dependent population.

10,334

population

31.98

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

03766 ZIP code map

Cities in ZIP code 03766

Below are the cities the US Postal Service accepts for ZIP code 03766. Using any city not on this list may result in mail delivery delays.

City	Status
Lebanon	Preferred

Nearby ZIP codes

05009 White River Junction (4.5 mi) 03756 Lebanon (5.5 mi) 03750 Etna (5.5 mi) 03755 Hanover (5.9 mi) 03748 Enfield (6 mi) 05052 North Hartland (6.4 mi) 03781 Plainfield (7.3 mi) 03770 Meriden (7.6 mi) 05001 White River Junction (8.1 mi) 05055 Norwich (8.5 mi) 03753 Grantham (10 mi) 05048 Hartland (10.6 mi)

Demographics updated 05/2026

Population
Total population	10,334
Population density	323 / sq mi
State FIPS	33
County FIPS	009

Geography
Land area	31.98 sq mi
Water area	0.25 sq mi
Latitude	43.6350
Longitude	-72.2319
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	30.7%	37.5%	31.0%
$50k – $100k	34.7%	32.1%	31.2%
$100k – $200k	27.9%	21.7%	28.1%
Over $200k	6.7%	8.6%	9.7%

Demographics & statistics

10,334

Population

323

People per sq mi

39.4

Median age

$95,938

Median household income

$51,544

Per capita income

$311,000

Median home value

$1,661

Median monthly rent

56.7%

Home ownership

7.5%

Poverty rate

0.4%

Unemployment

3,313

Housing units

53.6%

Bachelor's or higher

Age distribution

Male Female

275

Under 5

282

169

5–9

174

221

10–14

226

162

15–19

167

371

20–24

380

944

25–34

970

749

35–44

770

361

45–54

371

445

55–59

457

357

60–64

366

547

65–74

562

346

75–84

355

151

85+

156

← Male

Female →

Age summary

Group	Count	%
Under 18	1,607	15.6%
18 and over	8,727	84.4%
65 and over	2,117	20.5%
Median age	39.4 years

Race & ethnicity

White 86.2%

Asian 5%

Two or more races 4.4%

Hispanic or Latino 2.5%

Other race 1.1%

Black or African American 0.5%

American Indian / Alaska Native 0.3%

Group	Count	%
White	9,141	86.2%
Asian	532	5%
Two or more races	462	4.4%
Hispanic or Latino	267	2.5%
Other race	120	1.1%
Black or African American	50	0.5%
American Indian / Alaska Native	29	0.3%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	30.7%	37.5%	31.0%
$50k – $100k	34.7%	32.1%	31.2%
$100k – $200k	27.9%	21.7%	28.1%
Over $200k	6.7%	8.6%	9.7%

Under $10k 4.1%

$10k–$15k 2.6%

$15k–$25k 4.6%

$25k–$35k 5.9%

$35k–$50k 6.3%

$50k–$75k 13.7%

$75k–$100k 15.1%

$100k–$150k 22.6%

$150k–$200k 12.0%

$200k+ 13.1%

Range	% of households
Under $10k	4.1%
$10k–$15k	2.6%
$15k–$25k	4.6%
$25k–$35k	5.9%
$35k–$50k	6.3%
$50k–$75k	13.7%
$75k–$100k	15.1%
$100k–$150k	22.6%
$150k–$200k	12.0%
$200k+	13.1%
Median income	$95,938

Housing

Home values

Under $50k 5.6%

$50k–$100k 7.9%

$100k–$150k 2.2%

$150k–$200k 10.0%

$200k–$300k 21.9%

$300k–$500k 34.4%

$500k–$1M 13.7%

$1M+ 4.2%

Housing overview

Metric	Value
Median home value	$311,000
Median rent / month	$1,661
Owner occupied	56.7%
Renter occupied	43.3%
Vacant	17.1%
Single-family detached	41.6%
Large apartment buildings	19.4%
Mobile homes	6.0%
Median rooms	4.7
Avg household size (owned)	2.68

Year built

Era	%
2020 or later	0.9%
2010–2019	8.1%
2000–2009	10.1%
1990–1999	11.5%
1980–1989	20.2%
1970–1979	8.1%
1960–1969	6.8%
1950–1959	3.1%
1940–1949	4.2%
1939 or earlier	27.0%

Bedrooms

Size	% of units
No bedroom (studio)	2.4%
1 bedroom	21.2%
2 bedrooms	41.8%
3 bedrooms	18.9%
4 bedrooms	10.1%
5+ bedrooms	5.6%

Vehicles per household

Vehicles	% of households
No vehicle	6.9%
1 vehicle	39.4%
2 vehicles	41.3%
3 or more	12.4%

Heating fuel

Fuel type	%
Utility gas	7.6%
Electricity	16.7%
Propane / LP gas	26.2%
Fuel oil	44.2%
Wood	3.3%
No fuel used	0.2%

Households & families

Household type	Count	%
Married-couple family	2,011	46.9%
Cohabiting couple	372	8.7%
Male householder, no spouse	702	16.4%
Female householder, no spouse	1,201	28.0%
Households with children under 18	840	19.6%
Households with seniors (65+)	1,339	31.2%
Average household size	2.36

Marital status

Status	Male	Female
Never married	34.2%	31.2%
Married	50.1%	48.2%
Separated	0.9%	1.3%
Widowed	4.1%	5.4%
Divorced	10.8%	13.9%

Education

Less than 9th grade 1.1%

Some HS, no diploma 4.4%

HS graduate 24.0%

Some college, no degree 10.3%

Associate's degree 6.7%

Bachelor's degree 23.0%

Graduate / professional 30.6%

Metric	%
HS diploma or higher	94.5%
Bachelor's or higher	53.6%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	77	4.5%
Kindergarten	61	3.6%
Elementary school	629	36.7%
High school	330	19.3%
College / grad school	615	35.9%

Employment

Industry of employment

Education & healthcare 39.3%

Retail trade 9.8%

Arts, food & hospitality 9.6%

Manufacturing 9.0%

Professional & management 9.0%

Construction 7.3%

Information 3.9%

Other services 3.8%

Transportation & utilities 2.2%

Finance & real estate 2.1%

Agriculture & mining 1.7%

Public administration 1.6%

Wholesale trade 0.7%

Occupation

Category	%
Management, business & arts	50.7%
Service	14.1%
Sales & office	17.7%
Natural resources & construction	7.1%
Production & transportation	10.4%

Employment type

Type	%
Private sector	82.4%
Government	8.3%
Self-employed	9.2%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	66.0%
Carpool	14.5%
Public transit	2.6%
Walk	3.3%
Work from home	12.7%
Other means	0.9%
Avg commute (minutes)	15.7

Poverty

All people 7.5%

Under 18 years 9.3%

18 and over 7.1%

Married-couple families 3.4%

Female-led households 12.1%

Income support

Source	% of households
Social Security	33.1%
Retirement income	23.0%
Supplemental Security	1.0%
Cash public assistance	2.4%
Food stamps / SNAP	7.1%

Health indicators

Condition	%
Obesity	30.2%
High blood pressure	25.1%
High cholesterol	28.3%
Diabetes	7.5%
Heart disease	5.3%
Stroke	2.4%
Asthma	10.3%
Arthritis	22.6%
Kidney disease	2.4%
Pulmonary disease	5.2%
Cancer	6.7%

Behavior / access	%
Smoking	12.7%
Binge drinking	16.5%
No physical activity	15.7%
Less than 7 hrs sleep	29.0%
Depression	22.2%
Fair or poor health	10.3%
Poor mental health	13.6%
Poor physical health	8.6%
No health insurance	9.8%
Visited doctor (checkup)	72.8%
Visited dentist	69.1%
Cholesterol screening	90.8%
Teeth loss	10.3%

Veterans & disability

Veterans	Count	%
Civilian veterans	586	6.7%

Disability	%
Any disability	10.1%
Under 18	0.0%
18–64 years	7.8%
65 and over	25.7%

Health insurance coverage

Type	%
Private insurance	72.0%
Public insurance	36.1%
No insurance	7.8%
Uninsured under 19	1.6%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	9,777	94.6%
Spanish	122	1.2%
Other Indo-European	38	0.4%
Asian & Pacific Islander	65	0.7%
Other languages	12	0.1%

Place of birth & citizenship

Origin	Count	%
Native born (US)	9,403	91.0%
Born in same state	9,216	89.2%
Born in different state	4,328	41.9%
Foreign born	187	1.8%
Naturalized citizen	931	9.0%
Not a US citizen	393	42.2%

Ancestry

Ancestry	Count	%
French	2,497	24.2%
Italian	1,724	16.7%
German	806	7.8%
Arab	240	2.3%
English	170	1.6%

Ancestry	Count	%
Dutch	92	0.9%
Polish	80	0.8%
Irish	16	0.2%
Norwegian	6	0.1%

Technology access

Metric	% of households
Computer access	41.5%
Internet access	92.1%

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

Frequently asked questions about ZIP code 03766

What city is ZIP code 03766 in?

ZIP code 03766 is primarily assigned to Lebanon, New Hampshire.

What county is ZIP code 03766 in?

ZIP code 03766 falls within Grafton County, New Hampshire.

How educated is the population of ZIP code 03766?

54% of residents hold a bachelor's degree or higher — well above the national average of ~33%, reflecting a highly educated population.

What is the typical home value in ZIP code 03766?

The median home value in ZIP code 03766 is $311,000.

What is the population of ZIP code 03766?

ZIP code 03766 has an estimated population of 10,334 residents, with a density of 323 people per square mile.

What is the median household income in ZIP code 03766?

The median household income in ZIP code 03766 is $95,938, above the national median of ~$75,000.

What timezone is ZIP code 03766 in?

ZIP code 03766 observes the EST timezone.