03445 ZIP Code — Sullivan, NH

Cheshire County, New Hampshire

ZIP code 03445 is located in Sullivan, New Hampshire, within Cheshire County. It covers approximately 19.50 square miles and serves a population of 687 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 603.

About ZIP code 03445

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 $219,400. Owner-occupancy is high at 86%, well above the national average.

Median household income is $96,750. The poverty rate of 3% is below the national average. 31% 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 30 minutes is near the national average.

Educational attainment is near the national average, with 27% of residents holding a bachelor's degree or higher.

Overall, ZIP code 03445 reflects a community defined by high homeownership and a significant Social Security-dependent population.

687

population

19.50

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

03445 ZIP code map

Cities in ZIP code 03445

Below are the cities the US Postal Service accepts for ZIP code 03445. Using any city not on this list may result in mail delivery delays.

City	Status
Sullivan	Acceptable
Sullivan	Preferred

Nearby ZIP codes

03448 Gilsum (2.2 mi) 03431 Keene (3.9 mi) 03435 Keene (6.2 mi) 03455 Marlborough (7.5 mi) 03450 Harrisville (8 mi) 03456 Marlow (8.2 mi) 03602 Alstead (9.9 mi) 03608 Walpole (10.5 mi) 03444 Dublin (11 mi) 03446 Swanzey (11.4 mi) 03449 Hancock (11.4 mi) 03467 Westmoreland (11.7 mi)

Demographics updated 05/2026

Population
Total population	687
Population density	35 / sq mi
State FIPS	33
County FIPS	005

Geography
Land area	19.50 sq mi
Water area	0.19 sq mi
Latitude	43.0111
Longitude	-72.2170
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	29.0%	36.3%	31.0%
$50k – $100k	37.4%	35.9%	31.2%
$100k – $200k	29.7%	22.5%	28.1%
Over $200k	3.8%	5.4%	9.7%

Demographics & statistics

687

Population

People per sq mi

44.0

Median age

$96,750

Median household income

$46,491

Per capita income

$219,400

Median home value

$1,050

Median monthly rent

85.5%

Home ownership

3.2%

Poverty rate

0.7%

Unemployment

262

Housing units

26.5%

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	113	16.4%
18 and over	574	83.6%
65 and over	129	18.8%
Median age	44.0 years

Race & ethnicity

White 88.8%

Asian 3.7%

Two or more races 3.1%

Hispanic or Latino 2.6%

Other race 1.8%

Group	Count	%
White	626	88.8%
Asian	26	3.7%
Two or more races	22	3.1%
Hispanic or Latino	18	2.6%
Other race	13	1.8%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	29.0%	36.3%	31.0%
$50k – $100k	37.4%	35.9%	31.2%
$100k – $200k	29.7%	22.5%	28.1%
Over $200k	3.8%	5.4%	9.7%

$10k–$15k 2.8%

$15k–$25k 6.4%

$25k–$35k 2.8%

$35k–$50k 7.8%

$50k–$75k 18.7%

$75k–$100k 12.7%

$100k–$150k 28.3%

$150k–$200k 14.8%

$200k+ 5.7%

Range	% of households
$10k–$15k	2.8%
$15k–$25k	6.4%
$25k–$35k	2.8%
$35k–$50k	7.8%
$50k–$75k	18.7%
$75k–$100k	12.7%
$100k–$150k	28.3%
$150k–$200k	14.8%
$200k+	5.7%
Median income	$96,750

Housing

Home values

Under $50k 7.4%

$50k–$100k 7.4%

$100k–$150k 6.2%

$150k–$200k 18.2%

$200k–$300k 35.1%

$300k–$500k 16.1%

$500k–$1M 7.9%

$1M+ 1.7%

Housing overview

Metric	Value
Median home value	$219,400
Median rent / month	$1,050
Owner occupied	85.5%
Renter occupied	14.5%
Vacant	6.6%
Single-family detached	84.5%
Large apartment buildings	0.0%
Mobile homes	7.3%
Median rooms	5.5
Avg household size (owned)	2.44

Year built

Era	%
2020 or later	0.7%
2010–2019	4.3%
2000–2009	18.2%
1990–1999	9.6%
1980–1989	13.5%
1970–1979	22.1%
1960–1969	7.6%
1950–1959	1.7%
1940–1949	2.3%
1939 or earlier	20.1%

Bedrooms

Size	% of units
No bedroom (studio)	1.7%
1 bedroom	7.6%
2 bedrooms	32.7%
3 bedrooms	41.3%
4 bedrooms	10.6%
5+ bedrooms	6.3%

Vehicles per household

Vehicles	% of households
No vehicle	6.4%
1 vehicle	16.3%
2 vehicles	45.9%
3 or more	31.4%

Heating fuel

Fuel type	%
Electricity	2.8%
Propane / LP gas	9.5%
Fuel oil	61.1%
Wood	25.8%

Households & families

Household type	Count	%
Married-couple family	169	59.7%
Cohabiting couple	34	12.0%
Male householder, no spouse	38	13.4%
Female householder, no spouse	42	14.8%
Households with children under 18	77	27.2%
Households with seniors (65+)	102	36.0%
Average household size	2.43

Marital status

Status	Male	Female
Never married	29.1%	14.6%
Married	56.8%	60.4%
Separated	6.1%	2.1%
Widowed	3.4%	7.3%
Divorced	4.7%	15.6%

Education

Less than 9th grade 1.6%

Some HS, no diploma 7.5%

HS graduate 29.6%

Some college, no degree 24.5%

Associate's degree 10.2%

Bachelor's degree 14.1%

Graduate / professional 12.4%

Metric	%
HS diploma or higher	90.9%
Bachelor's or higher	26.5%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	18	18.6%
Kindergarten	0	0.0%
Elementary school	36	37.1%
High school	18	18.6%
College / grad school	25	25.8%

Employment

Industry of employment

Education & healthcare 27.4%

Manufacturing 16.5%

Construction 12.1%

Professional & management 10.9%

Other services 9.2%

Retail trade 6.1%

Arts, food & hospitality 5.3%

Finance & real estate 4.6%

Wholesale trade 3.9%

Public administration 1.5%

Information 1.2%

Transportation & utilities 0.7%

Agriculture & mining 0.5%

Occupation

Category	%
Management, business & arts	43.4%
Service	17.0%
Sales & office	9.7%
Natural resources & construction	15.5%
Production & transportation	14.3%

Employment type

Type	%
Private sector	75.0%
Government	11.7%
Self-employed	13.3%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	84.8%
Carpool	5.6%
Public transit	0.0%
Walk	1.7%
Work from home	7.8%
Other means	0.0%
Avg commute (minutes)	29.7

Poverty

All people 3.2%

Under 18 years 2.7%

18 and over 3.3%

Married-couple families 1.8%

Female-led households 0.0%

Income support

Source	% of households
Social Security	31.1%
Retirement income	21.2%
Supplemental Security	3.5%
Cash public assistance	2.5%
Food stamps / SNAP	2.5%

Health indicators

Condition	%
Obesity	30.4%
High blood pressure	28.0%
High cholesterol	27.6%
Diabetes	7.8%
Heart disease	5.3%
Stroke	2.3%
Asthma	10.7%
Arthritis	25.1%
Kidney disease	2.3%
Pulmonary disease	5.7%
Cancer	6.6%

Behavior / access	%
Smoking	13.8%
Binge drinking	18.5%
No physical activity	17.2%
Less than 7 hrs sleep	33.0%
Depression	23.1%
Fair or poor health	10.8%
Poor mental health	14.3%
Poor physical health	9.2%
No health insurance	9.6%
Visited doctor (checkup)	66.7%
Visited dentist	68.3%
Cholesterol screening	91.1%
Teeth loss	10.1%

Veterans & disability

Veterans	Count	%
Civilian veterans	37	6.4%

Disability	%
Any disability	13.1%
Under 18	8.8%
18–64 years	9.9%
65 and over	27.9%

Health insurance coverage

Type	%
Private insurance	73.1%
Public insurance	32.3%
No insurance	3.3%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	622	90.5%
Spanish	10	1.6%
Other Indo-European	0	0.0%
Asian & Pacific Islander	0	0.0%
Other languages	10	1.6%

Place of birth & citizenship

Origin	Count	%
Native born (US)	655	95.3%
Born in same state	618	90.0%
Born in different state	314	45.7%
Foreign born	37	5.4%
Naturalized citizen	32	4.7%
Not a US citizen	9	28.1%

Ancestry

Ancestry	Count	%
French	177	25.8%
Italian	96	14%
German	18	2.6%
Arab	16	2.3%

Ancestry	Count	%
English	5	0.7%
Polish	4	0.6%
Norwegian	2	0.3%
Irish	1	0.1%

Technology access

Metric	% of households
Computer access	41.2%
Internet access	94.0%

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

Frequently asked questions about ZIP code 03445

What city is ZIP code 03445 in?

ZIP code 03445 is primarily assigned to Sullivan, New Hampshire.

What county is ZIP code 03445 in?

ZIP code 03445 falls within Cheshire County, New Hampshire.

Is ZIP code 03445 mostly owner-occupied?

86% of occupied units in ZIP code 03445 are owner-occupied, well above the national average.

What is the population of ZIP code 03445?

ZIP code 03445 has an estimated population of 687 residents, with a density of 35 people per square mile.

What is the median household income in ZIP code 03445?

The median household income in ZIP code 03445 is $96,750, above the national median of ~$75,000.

What is the typical home value in ZIP code 03445?

The median home value in ZIP code 03445 is $219,400.

What timezone is ZIP code 03445 in?

ZIP code 03445 observes the EST timezone.