03225 ZIP Code — Center Barnstead, NH

Belknap County, New Hampshire

ZIP code 03225 is located in Center Barnstead, New Hampshire, within Belknap County. It covers approximately 27.76 square miles and serves a population of 3,406 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 603.

About ZIP code 03225

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 $267,100. Owner-occupancy is high at 92%, well above the national average.

Median household income is $91,111. The poverty rate of 4% is below the national average. 37% 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 35 minutes is near the national average.

Educational attainment is near the national average, with 31% of residents holding a bachelor's degree or higher.

Overall, ZIP code 03225 reflects a community defined by high homeownership and a significant Social Security-dependent population.

3,406

population

27.76

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

03225 ZIP code map

Cities in ZIP code 03225

Below are the cities the US Postal Service accepts for ZIP code 03225. Using any city not on this list may result in mail delivery delays.

City	Status
Center Barnstead	Acceptable
Center Barnstead	Preferred

Nearby ZIP codes

03218 Barnstead (3.3 mi) 03263 Pittsfield (5.1 mi) 03837 Gilmanton Iron Works (5.4 mi) 03884 Strafford (7 mi) 03809 Alton (7.9 mi) 03835 Farmington (8 mi) 03855 New Durham (8.6 mi) 03237 Gilmanton (9.5 mi) 03261 Northwood (9.7 mi) 03810 Alton Bay (10.3 mi) 03234 Epsom (11.2 mi) 03851 Milton (12 mi)

Demographics updated 07/2026

Population
Total population	3,406
Population density	123 / sq mi
State FIPS	33
County FIPS	001

Geography
Land area	27.76 sq mi
Water area	1.68 sq mi
Latitude	43.3592
Longitude	-71.2351
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	26.9%	36.9%	31.0%
$50k – $100k	38.0%	31.7%	31.2%
$100k – $200k	30.7%	25.5%	28.1%
Over $200k	4.4%	5.9%	9.7%

Demographics & statistics

3,406

Population

123

People per sq mi

44.5

Median age

$91,111

Median household income

$41,834

Per capita income

$267,100

Median home value

$1,400

Median monthly rent

92.0%

Home ownership

3.7%

Poverty rate

2.1%

Unemployment

1,776

Housing units

31.4%

Bachelor's or higher

Age distribution

Male Female

Under 5

113

5–9

127

10–14

111

100

15–19

113

20–24

101

126

25–34

142

252

35–44

284

132

45–54

149

168

55–59

190

133

60–64

151

179

65–74

202

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	672	19.7%
18 and over	2,734	80.3%
65 and over	698	20.5%
Median age	44.5 years

Race & ethnicity

White 89.6%

American Indian / Alaska Native 3.8%

Two or more races 2.6%

Hispanic or Latino 2.4%

Other race 1%

Asian 0.7%

Group	Count	%
White	3,126	89.6%
American Indian / Alaska Native	131	3.8%
Two or more races	89	2.6%
Hispanic or Latino	82	2.4%
Other race	34	1%
Asian	26	0.7%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	26.9%	36.9%	31.0%
$50k – $100k	38.0%	31.7%	31.2%
$100k – $200k	30.7%	25.5%	28.1%
Over $200k	4.4%	5.9%	9.7%

Under $10k 1.3%

$15k–$25k 1.5%

$25k–$35k 7.4%

$35k–$50k 9.1%

$50k–$75k 23.6%

$75k–$100k 9.8%

$100k–$150k 25.0%

$150k–$200k 14.4%

$200k+ 7.9%

Range	% of households
Under $10k	1.3%
$15k–$25k	1.5%
$25k–$35k	7.4%
$35k–$50k	9.1%
$50k–$75k	23.6%
$75k–$100k	9.8%
$100k–$150k	25.0%
$150k–$200k	14.4%
$200k+	7.9%
Median income	$91,111

Housing

Home values

Under $50k 0.9%

$100k–$150k 5.2%

$150k–$200k 12.8%

$200k–$300k 43.7%

$300k–$500k 33.2%

$500k–$1M 3.5%

$1M+ 0.7%

Housing overview

Metric	Value
Median home value	$267,100
Median rent / month	$1,400
Owner occupied	92.0%
Renter occupied	8.0%
Vacant	33.9%
Single-family detached	94.9%
Large apartment buildings	0.0%
Mobile homes	3.3%
Median rooms	6.0
Avg household size (owned)	2.69

Year built

Era	%
2020 or later	0.4%
2010–2019	4.2%
2000–2009	12.3%
1990–1999	6.9%
1980–1989	28.7%
1970–1979	18.0%
1960–1969	8.9%
1950–1959	7.5%
1940–1949	1.5%
1939 or earlier	11.6%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	5.9%
2 bedrooms	30.1%
3 bedrooms	48.6%
4 bedrooms	10.2%
5+ bedrooms	5.2%

Vehicles per household

Vehicles	% of households
No vehicle	0.5%
1 vehicle	18.5%
2 vehicles	52.6%
3 or more	28.5%

Heating fuel

Fuel type	%
Utility gas	0.2%
Electricity	2.3%
Propane / LP gas	20.4%
Fuel oil	55.5%
Wood	14.1%
Solar	0.8%

Households & families

Household type	Count	%
Married-couple family	830	66.9%
Cohabiting couple	78	6.3%
Male householder, no spouse	121	9.8%
Female householder, no spouse	211	17.0%
Households with children under 18	325	26.2%
Households with seniors (65+)	431	34.8%
Average household size	2.75

Marital status

Status	Male	Female
Never married	26.0%	24.6%
Married	61.1%	61.5%
Separated	0.0%	0.9%
Widowed	1.1%	6.8%
Divorced	11.7%	6.1%

Education

Less than 9th grade 0.0%

Some HS, no diploma 4.8%

HS graduate 34.3%

Some college, no degree 19.3%

Associate's degree 10.3%

Bachelor's degree 19.4%

Graduate / professional 12.0%

Metric	%
HS diploma or higher	95.2%
Bachelor's or higher	31.4%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	23	3.2%
Kindergarten	9	1.3%
Elementary school	430	60.5%
High school	146	20.5%
College / grad school	103	14.5%

Employment

Industry of employment

Education & healthcare 24.1%

Manufacturing 11.0%

Construction 10.3%

Public administration 8.5%

Retail trade 7.9%

Finance & real estate 7.6%

Arts, food & hospitality 7.6%

Professional & management 5.7%

Other services 5.6%

Transportation & utilities 5.0%

Information 2.8%

Wholesale trade 2.4%

Agriculture & mining 1.6%

Occupation

Category	%
Management, business & arts	42.8%
Service	19.4%
Sales & office	13.7%
Natural resources & construction	11.5%
Production & transportation	12.6%

Employment type

Type	%
Private sector	70.5%
Government	22.6%
Self-employed	6.9%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	73.9%
Carpool	7.3%
Public transit	0.7%
Walk	1.8%
Work from home	15.7%
Other means	0.5%
Avg commute (minutes)	34.6

Poverty

All people 3.7%

Under 18 years 0.0%

18 and over 4.6%

Married-couple families 1.1%

Female-led households 19.0%

Income support

Source	% of households
Social Security	36.9%
Retirement income	36.8%
Supplemental Security	4.0%
Cash public assistance	1.6%
Food stamps / SNAP	2.7%

Health indicators

Condition	%
Obesity	35.2%
High blood pressure	29.9%
High cholesterol	30.3%
Diabetes	8.3%
Heart disease	5.4%
Stroke	2.4%
Asthma	10.7%
Arthritis	23.9%
Kidney disease	2.3%
Pulmonary disease	6.4%
Cancer	6.1%

Behavior / access	%
Smoking	18.5%
Binge drinking	19.6%
No physical activity	21.1%
Less than 7 hrs sleep	32.4%
Depression	21.6%
Fair or poor health	11.6%
Poor mental health	14.9%
Poor physical health	9.8%
No health insurance	11.5%
Visited doctor (checkup)	69.7%
Visited dentist	65.7%
Cholesterol screening	90.2%
Teeth loss	11.8%

Veterans & disability

Veterans	Count	%
Civilian veterans	263	9.7%

Disability	%
Any disability	10.4%
Under 18	1.3%
18–64 years	8.6%
65 and over	24.1%

Health insurance coverage

Type	%
Private insurance	71.3%
Public insurance	36.7%
No insurance	6.3%
Uninsured under 19	4.8%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	3,279	96.3%
Spanish	21	0.6%
Other Indo-European	0	0.0%
Asian & Pacific Islander	21	0.6%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	3,303	97.0%
Born in same state	3,288	96.5%
Born in different state	1,638	48.1%
Foreign born	15	0.4%
Naturalized citizen	103	3.0%
Not a US citizen	55	53.4%

Ancestry

Ancestry	Count	%
Italian	586	17.2%
French	498	14.6%
Arab	253	7.4%
German	226	6.6%

Ancestry	Count	%
Polish	29	0.9%
Irish	21	0.6%
English	10	0.3%

Technology access

Metric	% of households
Computer access	36.4%
Internet access	97.7%

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

Frequently asked questions about ZIP code 03225

What city is ZIP code 03225 in?

ZIP code 03225 is primarily assigned to Center Barnstead, New Hampshire.

What county is ZIP code 03225 in?

ZIP code 03225 falls within Belknap County, New Hampshire.

Is ZIP code 03225 mostly owner-occupied?

92% of occupied units in ZIP code 03225 are owner-occupied, well above the national average.

Does ZIP code 03225 have a large retiree population?

37% of households in ZIP code 03225 receive Social Security income, suggesting a significant retiree or disability population.

Does ZIP code 03225 have a large veteran population?

10% of civilians in ZIP code 03225 are veterans, above the national average of ~7%.

What is the population of ZIP code 03225?

ZIP code 03225 has an estimated population of 3,406 residents, with a density of 123 people per square mile.

What timezone is ZIP code 03225 in?

ZIP code 03225 observes the EST timezone.