03605 ZIP Code — Lempster, NH

Sullivan County, New Hampshire

ZIP code 03605 is located in Lempster, New Hampshire, within Sullivan County. It covers approximately 31.54 square miles and serves a population of 934 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 603.

About ZIP code 03605

The housing stock consists of predominantly single-family detached homes. Most homes were built in the 1970s, giving the area an established character. Median home value is $202,000. Owner-occupancy is high at 94%, well above the national average.

Median household income is $92,500. The poverty rate of 7% is below the national average. 35% 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 36 minutes suggests many residents work outside the immediate area.

Educational attainment is near the national average, with 23% of residents holding a bachelor's degree or higher.

Overall, ZIP code 03605 reflects a community defined by high homeownership and a significant Social Security-dependent population.

934

population

31.54

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

03605 ZIP code map

Cities in ZIP code 03605

Below are the cities the US Postal Service accepts for ZIP code 03605. Using any city not on this list may result in mail delivery delays.

City	Status
Lempster	Acceptable
Lempster	Preferred

Nearby ZIP codes

03601 Acworth (2.8 mi) 03603 Charlestown (6.9 mi) 03752 Goshen (7.9 mi) 03456 Marlow (8 mi) 03280 Washington (8.1 mi) 03602 Alstead (8.3 mi) 03743 Claremont (9.2 mi) 03773 Newport (10.3 mi) 05156 Springfield (12.9 mi) 03782 Sunapee (13.2 mi) 03255 Newbury (13.4 mi) 05101 Bellows Falls (13.6 mi)

Demographics updated 05/2026

Population
Total population	934
Population density	30 / sq mi
State FIPS	33
County FIPS	019

Geography
Land area	31.54 sq mi
Water area	0.38 sq mi
Latitude	43.2305
Longitude	-72.2417
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	39.4%	39.4%	31.0%
$50k – $100k	31.3%	36.1%	31.2%
$100k – $200k	26.5%	19.6%	28.1%
Over $200k	2.8%	4.9%	9.7%

Demographics & statistics

934

Population

People per sq mi

42.8

Median age

$92,500

Median household income

$34,320

Per capita income

$202,000

Median home value

Median monthly rent

94.4%

Home ownership

6.5%

Poverty rate

3.3%

Unemployment

626

Housing units

22.7%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

15–19

20–24

25–34

35–44

45–54

55–59

60–64

65–74

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	233	24.9%
18 and over	701	75.1%
65 and over	181	19.4%
Median age	42.8 years

Race & ethnicity

White 98.8%

Two or more races 1.2%

Group	Count	%
White	923	98.8%
Two or more races	11	1.2%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	39.4%	39.4%	31.0%
$50k – $100k	31.3%	36.1%	31.2%
$100k – $200k	26.5%	19.6%	28.1%
Over $200k	2.8%	4.9%	9.7%

Under $10k 1.0%

$10k–$15k 1.0%

$15k–$25k 6.3%

$25k–$35k 7.6%

$35k–$50k 8.9%

$50k–$75k 16.1%

$75k–$100k 16.8%

$100k–$150k 34.5%

$150k–$200k 4.3%

$200k+ 3.6%

Range	% of households
Under $10k	1.0%
$10k–$15k	1.0%
$15k–$25k	6.3%
$25k–$35k	7.6%
$35k–$50k	8.9%
$50k–$75k	16.1%
$75k–$100k	16.8%
$100k–$150k	34.5%
$150k–$200k	4.3%
$200k+	3.6%
Median income	$92,500

Housing

Home values

Under $50k 0.7%

$50k–$100k 5.2%

$100k–$150k 15.0%

$150k–$200k 28.2%

$200k–$300k 34.5%

$300k–$500k 13.6%

$500k–$1M 2.8%

Housing overview

Metric	Value
Median home value	$202,000
Median rent / month	$0
Owner occupied	94.4%
Renter occupied	5.6%
Vacant	52.7%
Single-family detached	89.3%
Large apartment buildings	0.5%
Mobile homes	9.3%
Median rooms	5.2
Avg household size (owned)	3.20

Year built

Era	%
2020 or later	0.3%
2010–2019	4.5%
2000–2009	13.5%
1990–1999	4.5%
1980–1989	14.0%
1970–1979	28.3%
1960–1969	5.0%
1950–1959	3.0%
1940–1949	0.3%
1939 or earlier	26.6%

Bedrooms

Size	% of units
No bedroom (studio)	0.6%
1 bedroom	13.2%
2 bedrooms	35.3%
3 bedrooms	35.0%
4 bedrooms	11.2%
5+ bedrooms	4.7%

Vehicles per household

Vehicles	% of households
No vehicle	4.6%
1 vehicle	18.1%
2 vehicles	40.1%
3 or more	37.2%

Heating fuel

Fuel type	%
Electricity	5.3%
Propane / LP gas	12.2%
Fuel oil	40.5%
Wood	37.2%
Solar	0.7%

Households & families

Household type	Count	%
Married-couple family	166	54.6%
Cohabiting couple	30	9.9%
Male householder, no spouse	96	31.6%
Female householder, no spouse	12	3.9%
Households with children under 18	87	28.6%
Households with seniors (65+)	110	36.2%
Average household size	3.07

Marital status

Status	Male	Female
Never married	24.1%	34.3%
Married	48.9%	46.3%
Separated	0.6%	2.6%
Widowed	4.3%	7.3%
Divorced	22.2%	9.4%

Education

Less than 9th grade 3.7%

Some HS, no diploma 7.2%

HS graduate 43.0%

Some college, no degree 15.5%

Associate's degree 7.8%

Bachelor's degree 12.6%

Graduate / professional 10.2%

Metric	%
HS diploma or higher	89.1%
Bachelor's or higher	22.7%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	15	6.8%
Kindergarten	11	5.0%
Elementary school	97	44.1%
High school	37	16.8%
College / grad school	60	27.3%

Employment

Industry of employment

Education & healthcare 23.4%

Construction 18.0%

Retail trade 17.1%

Manufacturing 13.7%

Wholesale trade 5.6%

Professional & management 4.9%

Transportation & utilities 4.1%

Finance & real estate 3.7%

Agriculture & mining 3.2%

Arts, food & hospitality 2.4%

Other services 1.7%

Public administration 1.5%

Information 0.7%

Occupation

Category	%
Management, business & arts	31.2%
Service	15.1%
Sales & office	14.6%
Natural resources & construction	21.7%
Production & transportation	17.3%

Employment type

Type	%
Private sector	82.2%
Government	6.1%
Self-employed	11.7%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	77.7%
Carpool	12.9%
Public transit	0.0%
Walk	1.0%
Work from home	8.4%
Other means	0.0%
Avg commute (minutes)	35.6

Poverty

All people 6.5%

Under 18 years 7.3%

18 and over 6.3%

Married-couple families 0.0%

Female-led households 20.0%

Income support

Source	% of households
Social Security	35.2%
Retirement income	20.7%
Supplemental Security	1.6%
Cash public assistance	0.7%
Food stamps / SNAP	6.6%

Health indicators

Condition	%
Obesity	34.0%
High blood pressure	30.7%
High cholesterol	33.2%
Diabetes	9.4%
Heart disease	6.2%
Stroke	2.8%
Asthma	11.1%
Arthritis	26.9%
Kidney disease	2.6%
Pulmonary disease	7.0%
Cancer	6.8%

Behavior / access	%
Smoking	18.1%
Binge drinking	17.1%
No physical activity	20.3%
Less than 7 hrs sleep	34.4%
Depression	24.0%
Fair or poor health	13.1%
Poor mental health	14.5%
Poor physical health	10.7%
No health insurance	11.2%
Visited doctor (checkup)	69.9%
Visited dentist	65.1%
Cholesterol screening	91.1%
Teeth loss	14.1%

Veterans & disability

Veterans	Count	%
Civilian veterans	51	7.3%

Disability	%
Any disability	8.8%
Under 18	1.7%
18–64 years	7.3%
65 and over	22.1%

Health insurance coverage

Type	%
Private insurance	73.6%
Public insurance	30.9%
No insurance	4.5%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	863	92.4%
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)	930	99.6%
Born in same state	927	99.3%
Born in different state	414	44.3%
Foreign born	3	0.3%
Naturalized citizen	4	0.4%
Not a US citizen	2	50.0%

Ancestry

Ancestry	Count	%
French	256	27.4%
Italian	165	17.7%
German	49	5.2%
Arab	44	4.7%

Ancestry	Count	%
Polish	7	0.7%
Norwegian	4	0.4%
Irish	2	0.2%

Technology access

Metric	% of households
Computer access	32.5%
Internet access	94.7%

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

Frequently asked questions about ZIP code 03605

What city is ZIP code 03605 in?

ZIP code 03605 is primarily assigned to Lempster, New Hampshire.

What county is ZIP code 03605 in?

ZIP code 03605 falls within Sullivan County, New Hampshire.

Is ZIP code 03605 mostly owner-occupied?

94% of occupied units in ZIP code 03605 are owner-occupied, well above the national average.

Does ZIP code 03605 have a large retiree population?

35% of households in ZIP code 03605 receive Social Security income, suggesting a significant retiree or disability population.

What is the population of ZIP code 03605?

ZIP code 03605 has an estimated population of 934 residents, with a density of 30 people per square mile.

What is the typical home value in ZIP code 03605?

The median home value in ZIP code 03605 is $202,000.

What timezone is ZIP code 03605 in?

ZIP code 03605 observes the EST timezone.