03858 ZIP Code — Newton, NH

Rockingham County, New Hampshire

ZIP code 03858 is located in Newton, New Hampshire, within Rockingham County. It covers approximately 9.81 square miles and serves a population of 4,808 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 603.

About ZIP code 03858

The housing stock consists of predominantly single-family detached homes. Most homes were built in the 1990s, giving the area an established character. Median home value is $384,800. Owner-occupancy is high at 91%, well above the national average.

Median household income is $141,328. The poverty rate of 3% is below the national average. 38% 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 32 minutes is near the national average.

Educational attainment is near the national average, with 34% of residents holding a bachelor's degree or higher.

Overall, ZIP code 03858 reflects a community defined by high homeownership and a significant Social Security-dependent population.

4,808

population

9.81

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

03858 ZIP code map

Cities in ZIP code 03858

Below are the cities the US Postal Service accepts for ZIP code 03858. Using any city not on this list may result in mail delivery delays.

City	Status
Newton	Preferred

Nearby ZIP codes

01860 Merrimac (2.5 mi) 03865 Plaistow (3 mi) 03848 Kingston (3.2 mi) 03826 East Hampstead (4.1 mi) 01913 Amesbury (4.7 mi) 03827 East Kingston (4.7 mi) 01830 Haverhill (4.9 mi) 03819 Danville (5.9 mi) 03811 Atkinson (6.2 mi) 01985 West Newbury (6.3 mi) 01832 Haverhill (6.7 mi) 03841 Hampstead (6.9 mi)

Demographics updated 05/2026

Population
Total population	4,808
Population density	490 / sq mi
State FIPS	33
County FIPS	015

Geography
Land area	9.81 sq mi
Water area	0.15 sq mi
Latitude	42.8654
Longitude	-71.0430
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	15.6%	23.5%	31.0%
$50k – $100k	19.9%	29.1%	31.2%
$100k – $200k	53.4%	32.8%	28.1%
Over $200k	11.1%	14.6%	9.7%

Demographics & statistics

4,808

Population

490

People per sq mi

47.0

Median age

$141,328

Median household income

$61,314

Per capita income

$384,800

Median home value

$1,224

Median monthly rent

91.4%

Home ownership

3.2%

Poverty rate

2.7%

Unemployment

1,688

Housing units

33.7%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

187

10–14

189

117

15–19

118

132

20–24

134

333

25–34

336

243

35–44

245

380

45–54

384

269

55–59

271

223

60–64

225

289

65–74

291

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	804	16.7%
18 and over	4,004	83.3%
65 and over	764	15.9%
Median age	47.0 years

Race & ethnicity

White 86.4%

Hispanic or Latino 6.3%

Two or more races 3.6%

Other race 2.8%

Black or African American 0.9%

Group	Count	%
White	4,434	86.4%
Hispanic or Latino	324	6.3%
Two or more races	186	3.6%
Other race	144	2.8%
Black or African American	44	0.9%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	15.6%	23.5%	31.0%
$50k – $100k	19.9%	29.1%	31.2%
$100k – $200k	53.4%	32.8%	28.1%
Over $200k	11.1%	14.6%	9.7%

Under $10k 0.5%

$10k–$15k 2.2%

$15k–$25k 3.7%

$25k–$35k 0.8%

$35k–$50k 1.6%

$50k–$75k 7.7%

$75k–$100k 9.7%

$100k–$150k 29.2%

$150k–$200k 20.0%

$200k+ 24.5%

Range	% of households
Under $10k	0.5%
$10k–$15k	2.2%
$15k–$25k	3.7%
$25k–$35k	0.8%
$35k–$50k	1.6%
$50k–$75k	7.7%
$75k–$100k	9.7%
$100k–$150k	29.2%
$150k–$200k	20.0%
$200k+	24.5%
Median income	$141,328

Housing

Home values

$50k–$100k 1.5%

$100k–$150k 2.1%

$150k–$200k 1.3%

$200k–$300k 13.9%

$300k–$500k 65.5%

$500k–$1M 14.8%

$1M+ 0.9%

Housing overview

Metric	Value
Median home value	$384,800
Median rent / month	$1,224
Owner occupied	91.4%
Renter occupied	8.6%
Vacant	2.9%
Single-family detached	86.8%
Large apartment buildings	2.1%
Mobile homes	1.7%
Median rooms	6.2
Avg household size (owned)	2.79

Year built

Era	%
2020 or later	0.4%
2010–2019	8.0%
2000–2009	15.9%
1990–1999	16.7%
1980–1989	13.8%
1970–1979	16.6%
1960–1969	4.7%
1950–1959	4.7%
1940–1949	6.3%
1939 or earlier	12.9%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	5.4%
2 bedrooms	20.7%
3 bedrooms	55.4%
4 bedrooms	17.3%
5+ bedrooms	1.2%

Vehicles per household

Vehicles	% of households
No vehicle	3.0%
1 vehicle	17.4%
2 vehicles	41.7%
3 or more	37.9%

Heating fuel

Fuel type	%
Utility gas	3.0%
Electricity	1.8%
Propane / LP gas	25.4%
Fuel oil	64.6%
Wood	2.9%
Solar	0.5%

Households & families

Household type	Count	%
Married-couple family	1,177	65.8%
Cohabiting couple	158	8.8%
Male householder, no spouse	138	7.7%
Female householder, no spouse	316	17.7%
Households with children under 18	464	25.9%
Households with seniors (65+)	545	30.5%
Average household size	2.69

Marital status

Status	Male	Female
Never married	29.9%	17.5%
Married	56.9%	63.1%
Separated	1.1%	0.0%
Widowed	1.4%	4.9%
Divorced	10.7%	14.6%

Education

Less than 9th grade 1.8%

Some HS, no diploma 2.0%

HS graduate 33.2%

Some college, no degree 21.5%

Associate's degree 7.7%

Bachelor's degree 23.1%

Graduate / professional 10.6%

Metric	%
HS diploma or higher	96.2%
Bachelor's or higher	33.7%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	28	3.2%
Kindergarten	21	2.4%
Elementary school	414	47.1%
High school	242	27.5%
College / grad school	174	19.8%

Employment

Industry of employment

Education & healthcare 29.5%

Manufacturing 18.5%

Construction 10.1%

Retail trade 9.1%

Professional & management 7.7%

Arts, food & hospitality 5.3%

Finance & real estate 5.1%

Transportation & utilities 5.0%

Public administration 4.4%

Wholesale trade 2.7%

Other services 1.8%

Information 1.0%

Occupation

Category	%
Management, business & arts	46.5%
Service	13.4%
Sales & office	13.8%
Natural resources & construction	15.0%
Production & transportation	11.2%

Employment type

Type	%
Private sector	80.4%
Government	11.8%
Self-employed	7.8%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	76.0%
Carpool	9.3%
Public transit	0.6%
Walk	0.0%
Work from home	14.1%
Other means	0.0%
Avg commute (minutes)	31.7

Poverty

All people 3.2%

Under 18 years 4.1%

18 and over 3.1%

Married-couple families 0.8%

Female-led households 16.9%

Income support

Source	% of households
Social Security	37.5%
Retirement income	18.6%
Supplemental Security	1.8%
Cash public assistance	0.0%
Food stamps / SNAP	3.1%

Health indicators

Condition	%
Obesity	30.5%
High blood pressure	28.0%
High cholesterol	29.9%
Diabetes	7.2%
Heart disease	4.5%
Stroke	2.1%
Asthma	10.0%
Arthritis	21.2%
Kidney disease	2.1%
Pulmonary disease	5.2%
Cancer	5.9%

Behavior / access	%
Smoking	16.1%
Binge drinking	19.8%
No physical activity	16.5%
Less than 7 hrs sleep	30.6%
Depression	20.6%
Fair or poor health	10.0%
Poor mental health	14.5%
Poor physical health	8.9%
No health insurance	9.4%
Visited doctor (checkup)	71.2%
Visited dentist	73.4%
Cholesterol screening	90.8%
Teeth loss	9.9%

Veterans & disability

Veterans	Count	%
Civilian veterans	220	5.5%

Disability	%
Any disability	8.2%
Under 18	4.7%
18–64 years	3.9%
65 and over	30.0%

Health insurance coverage

Type	%
Private insurance	85.4%
Public insurance	22.4%
No insurance	6.1%
Uninsured under 19	8.5%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	4,657	96.9%
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)	4,653	96.8%
Born in same state	4,616	96.0%
Born in different state	868	18.1%
Foreign born	37	0.8%
Naturalized citizen	155	3.2%
Not a US citizen	92	59.4%

Ancestry

Ancestry	Count	%
French	1,070	22.3%
Italian	965	20.1%
German	651	13.5%
Arab	110	2.3%

Ancestry	Count	%
Norwegian	61	1.3%
Polish	46	1%
Irish	27	0.6%

Technology access

Metric	% of households
Computer access	37.2%
Internet access	96.5%

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

Frequently asked questions about ZIP code 03858

What city is ZIP code 03858 in?

ZIP code 03858 is primarily assigned to Newton, New Hampshire.

What county is ZIP code 03858 in?

ZIP code 03858 falls within Rockingham County, New Hampshire.

Is ZIP code 03858 mostly owner-occupied?

91% of occupied units in ZIP code 03858 are owner-occupied, well above the national average.

Does ZIP code 03858 have a large retiree population?

38% of households in ZIP code 03858 receive Social Security income, suggesting a significant retiree or disability population.

What is the median household income in ZIP code 03858?

The median household income in ZIP code 03858 is $141,328, above the national median of ~$75,000.

What is the typical home value in ZIP code 03858?

The median home value in ZIP code 03858 is $384,800.

What timezone is ZIP code 03858 in?

ZIP code 03858 observes the EST timezone.