03781 ZIP Code — Plainfield, NH

Sullivan County, New Hampshire

ZIP code 03781 is located in Plainfield, New Hampshire, within Sullivan County. It covers approximately 47.85 square miles and serves a population of 1,840 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 603.

About ZIP code 03781

The housing stock consists of predominantly single-family detached homes. Most homes were built in the 1980s, giving the area an established character. Median home value is $364,400. Owner-occupancy is high at 91%, well above the national average.

Median household income is $107,969. The poverty rate of 6% is below the national average. 36% 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 20 minutes is near the national average.

Educational attainment is high — 47% of residents hold a bachelor's degree or higher, well above the national average of 33%.

Notable community characteristics include a notable veteran presence at 12% of civilians, above the national average of 7%.

Overall, ZIP code 03781 reflects a community defined by a strong veteran community, high homeownership, and a significant Social Security-dependent population.

1,840

population

47.85

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

03781 ZIP code map

Cities in ZIP code 03781

Below are the cities the US Postal Service accepts for ZIP code 03781. Using any city not on this list may result in mail delivery delays.

City	Status
Plainfield	Preferred

Nearby ZIP codes

03770 Meriden (0.7 mi) 05052 North Hartland (5.3 mi) 03766 Lebanon (7.3 mi) 03753 Grantham (7.5 mi) 05048 Hartland (7.8 mi) 05009 White River Junction (8 mi) 05089 Windsor (9.4 mi) 03748 Enfield (10.1 mi) 05001 White River Junction (10.5 mi) 05073 Taftsville (10.9 mi) 05037 Brownsville (11 mi) 03756 Lebanon (11.5 mi)

Demographics updated 05/2026

Population
Total population	1,840
Population density	38 / sq mi
State FIPS	33
County FIPS	019

Geography
Land area	47.85 sq mi
Water area	0.74 sq mi
Latitude	43.5366
Longitude	-72.2835
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	20.4%	39.4%	31.0%
$50k – $100k	37.3%	36.1%	31.2%
$100k – $200k	30.5%	19.6%	28.1%
Over $200k	11.8%	4.9%	9.7%

Demographics & statistics

1,840

Population

People per sq mi

45.9

Median age

$107,969

Median household income

$51,659

Per capita income

$364,400

Median home value

$1,652

Median monthly rent

91.4%

Home ownership

6.4%

Poverty rate

1.0%

Unemployment

789

Housing units

46.9%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

15–19

20–24

141

25–34

165

35–44

45–54

55–59

60–64

100

143

65–74

166

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	354	19.2%
18 and over	1,486	80.8%
65 and over	483	26.3%
Median age	45.9 years

Race & ethnicity

White 95.8%

Two or more races 2.8%

Hispanic or Latino 0.7%

Asian 0.7%

Group	Count	%
White	1,775	95.8%
Two or more races	52	2.8%
Hispanic or Latino	13	0.7%
Asian	13	0.7%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	20.4%	39.4%	31.0%
$50k – $100k	37.3%	36.1%	31.2%
$100k – $200k	30.5%	19.6%	28.1%
Over $200k	11.8%	4.9%	9.7%

Under $10k 3.7%

$10k–$15k 2.8%

$15k–$25k 1.5%

$25k–$35k 8.0%

$35k–$50k 4.6%

$50k–$75k 4.0%

$75k–$100k 23.6%

$100k–$150k 31.4%

$150k–$200k 8.6%

$200k+ 11.7%

Range	% of households
Under $10k	3.7%
$10k–$15k	2.8%
$15k–$25k	1.5%
$25k–$35k	8.0%
$35k–$50k	4.6%
$50k–$75k	4.0%
$75k–$100k	23.6%
$100k–$150k	31.4%
$150k–$200k	8.6%
$200k+	11.7%
Median income	$107,969

Housing

Home values

Under $50k 2.4%

$50k–$100k 1.5%

$100k–$150k 4.9%

$150k–$200k 10.4%

$200k–$300k 13.0%

$300k–$500k 53.5%

$500k–$1M 13.2%

$1M+ 1.1%

Housing overview

Metric	Value
Median home value	$364,400
Median rent / month	$1,652
Owner occupied	91.4%
Renter occupied	8.6%
Vacant	20.5%
Single-family detached	85.8%
Large apartment buildings	0.0%
Mobile homes	6.6%
Median rooms	6.1
Avg household size (owned)	2.80

Year built

Era	%
2020 or later	1.2%
2010–2019	0.7%
2000–2009	5.7%
1990–1999	10.4%
1980–1989	27.0%
1970–1979	21.6%
1960–1969	8.4%
1950–1959	1.4%
1940–1949	0.8%
1939 or earlier	22.8%

Bedrooms

Size	% of units
No bedroom (studio)	2.6%
1 bedroom	5.3%
2 bedrooms	26.0%
3 bedrooms	42.5%
4 bedrooms	19.4%
5+ bedrooms	4.3%

Vehicles per household

Vehicles	% of households
No vehicle	1.2%
1 vehicle	21.0%
2 vehicles	53.8%
3 or more	24.1%

Heating fuel

Fuel type	%
Utility gas	0.3%
Electricity	0.9%
Propane / LP gas	34.2%
Fuel oil	53.5%
Wood	10.5%

Households & families

Household type	Count	%
Married-couple family	465	69.1%
Cohabiting couple	31	4.6%
Male householder, no spouse	59	8.8%
Female householder, no spouse	118	17.5%
Households with children under 18	221	32.8%
Households with seniors (65+)	270	40.1%
Average household size	2.73

Marital status

Status	Male	Female
Never married	27.0%	22.6%
Married	60.7%	62.3%
Separated	1.7%	0.0%
Widowed	5.1%	7.3%
Divorced	5.5%	7.7%

Education

Less than 9th grade 0.9%

Some HS, no diploma 0.7%

HS graduate 24.3%

Some college, no degree 14.1%

Associate's degree 13.0%

Bachelor's degree 23.2%

Graduate / professional 23.8%

Metric	%
HS diploma or higher	98.4%
Bachelor's or higher	46.9%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	76	25.1%
Kindergarten	11	3.6%
Elementary school	91	30.0%
High school	81	26.7%
College / grad school	44	14.5%

Employment

Industry of employment

Education & healthcare 45.1%

Manufacturing 8.4%

Professional & management 8.0%

Construction 7.5%

Retail trade 7.1%

Finance & real estate 6.5%

Wholesale trade 6.4%

Arts, food & hospitality 3.3%

Transportation & utilities 2.3%

Information 1.6%

Public administration 1.6%

Agriculture & mining 1.5%

Other services 0.6%

Occupation

Category	%
Management, business & arts	50.2%
Service	14.1%
Sales & office	20.8%
Natural resources & construction	8.6%
Production & transportation	6.3%

Employment type

Type	%
Private sector	86.1%
Government	11.3%
Self-employed	2.6%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	76.9%
Carpool	3.1%
Public transit	0.0%
Walk	0.6%
Work from home	19.4%
Other means	0.0%
Avg commute (minutes)	19.8

Poverty

All people 6.4%

Under 18 years 0.0%

18 and over 7.9%

Married-couple families 6.0%

Female-led households 0.0%

Income support

Source	% of households
Social Security	36.3%
Retirement income	25.6%
Supplemental Security	2.7%
Cash public assistance	3.6%
Food stamps / SNAP	1.6%

Health indicators

Condition	%
Obesity	32.7%
High blood pressure	30.6%
High cholesterol	32.7%
Diabetes	9.2%
Heart disease	6.0%
Stroke	2.7%
Asthma	10.7%
Arthritis	27.0%
Kidney disease	2.6%
Pulmonary disease	6.3%
Cancer	7.4%

Behavior / access	%
Smoking	14.9%
Binge drinking	16.2%
No physical activity	18.2%
Less than 7 hrs sleep	32.6%
Depression	22.7%
Fair or poor health	11.7%
Poor mental health	13.1%
Poor physical health	9.8%
No health insurance	9.2%
Visited doctor (checkup)	71.5%
Visited dentist	69.3%
Cholesterol screening	92.9%
Teeth loss	11.2%

Veterans & disability

Veterans	Count	%
Civilian veterans	172	11.6%

Disability	%
Any disability	14.2%
Under 18	0.0%
18–64 years	9.8%
65 and over	33.7%

Health insurance coverage

Type	%
Private insurance	86.3%
Public insurance	29.5%
No insurance	1.7%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	1,663	90.4%
Spanish	13	0.8%
Other Indo-European	0	0.0%
Asian & Pacific Islander	0	0.0%
Other languages	13	0.8%

Place of birth & citizenship

Origin	Count	%
Native born (US)	1,796	97.6%
Born in same state	1,782	96.8%
Born in different state	794	43.2%
Foreign born	14	0.8%
Naturalized citizen	44	2.4%
Not a US citizen	39	88.6%

Ancestry

Ancestry	Count	%
French	589	32%
Italian	183	9.9%
German	159	8.6%
Arab	63	3.4%

Ancestry	Count	%
English	6	0.3%
Polish	5	0.3%
Irish	4	0.2%

Technology access

Metric	% of households
Computer access	36.6%
Internet access	98.7%

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

Frequently asked questions about ZIP code 03781

What city is ZIP code 03781 in?

ZIP code 03781 is primarily assigned to Plainfield, New Hampshire.

What county is ZIP code 03781 in?

ZIP code 03781 falls within Sullivan County, New Hampshire.

Is ZIP code 03781 mostly owner-occupied?

91% of occupied units in ZIP code 03781 are owner-occupied, well above the national average.

Does ZIP code 03781 have an older population?

26% of residents in ZIP code 03781 are 65 or older, above the national average of ~17%.

How educated is the population of ZIP code 03781?

47% of residents hold a bachelor's degree or higher — well above the national average of ~33%, reflecting a highly educated population.

Does ZIP code 03781 have a large veteran population?

12% of civilians in ZIP code 03781 are veterans, above the national average of ~7%.

What timezone is ZIP code 03781 in?

ZIP code 03781 observes the EST timezone.