03854 ZIP Code — New Castle, NH

Rockingham County, New Hampshire

ZIP code 03854 is located in New Castle, New Hampshire, within Rockingham County. It covers approximately 0.81 square miles and serves a population of 904 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 603.

About ZIP code 03854

The housing stock consists of predominantly single-family detached homes. Most homes were built in the pre-1940, giving the area an established character. Median home value is $1,475,000. Owner-occupancy is high at 92%, well above the national average.

The gap between median ($164,167) and mean household income suggests income inequality — a small number of higher earners pull the average up. The poverty rate of 4% is below the national average. 52% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with professional and management as the leading industry. The average commute of 26 minutes is near the national average. Remote work is prevalent — 35% of workers work from home.

Educational attainment is high — 71% 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 13% of civilians, above the national average of 7%.

Overall, ZIP code 03854 reflects a community defined by a highly educated population, a strong veteran community, high homeownership, a high rate of remote workers, and a significant Social Security-dependent population.

904
population
0.81
sq mi land
Standard
ZIP type
Eastern (ET)
timezone
03854 ZIP code map
Cities in ZIP code 03854

Below are the cities the US Postal Service accepts for ZIP code 03854. Using any city not on this list may result in mail delivery delays.

City Status
New Castle Acceptable
Demographics updated 05/2026
Population
Total population 904
Population density 1,116 / sq mi
State FIPS 33
County FIPS 015
Geography
Land area 0.81 sq mi
Water area 1.46 sq mi
Latitude 43.0642
Longitude -70.7227
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 16.5% 23.5% 31.0%
$50k – $100k 22.5% 29.1% 31.2%
$100k – $200k 16.5% 32.8% 28.1%
Over $200k 44.5% 14.6% 9.7%

Demographics & statistics

904
Population
1,116
People per sq mi
57.4
Median age
$164,167
Median household income
$156,894
Per capita income
$1,475,000
Median home value
$2,786
Median monthly rent
92.1%
Home ownership
3.5%
Poverty rate
0.0%
Unemployment
510
Housing units
70.9%
Bachelor's or higher

Age distribution

Male Female
12
Under 5
11
21
5–9
18
19
10–14
17
41
15–19
36
4
20–24
4
20
25–34
17
25
35–44
22
69
45–54
59
49
55–59
43
48
60–64
42
96
65–74
83
68
75–84
58
12
85+
10
← Male
Female →

Age summary

GroupCount%
Under 1817519.4%
18 and over72980.6%
65 and over32736.2%
Median age57.4 years

Race & ethnicity

White 95.2%
Hispanic or Latino 2.2%
Two or more races 2.2%
Asian 0.4%
GroupCount%
White88095.2%
Hispanic or Latino202.2%
Two or more races202.2%
Asian40.4%

Household income

Income range This ZIP County avg State avg
Under $50k 16.5% 23.5% 31.0%
$50k – $100k 22.5% 29.1% 31.2%
$100k – $200k 16.5% 32.8% 28.1%
Over $200k 44.5% 14.6% 9.7%
$10k–$15k 0.9%
$15k–$25k 5.6%
$25k–$35k 5.3%
$35k–$50k 5.3%
$50k–$75k 4.9%
$75k–$100k 13.5%
$100k–$150k 7.0%
$150k–$200k 13.3%
$200k+ 44.2%
Range% of households
$10k–$15k0.9%
$15k–$25k5.6%
$25k–$35k5.3%
$35k–$50k5.3%
$50k–$75k4.9%
$75k–$100k13.5%
$100k–$150k7.0%
$150k–$200k13.3%
$200k+44.2%
Median income$164,167

Housing

Home values

$100k–$150k 1.5%
$200k–$300k 0.5%
$300k–$500k 2.3%
$500k–$1M 24.2%
$1M+ 71.5%

Housing overview

MetricValue
Median home value$1,475,000
Median rent / month$2,786
Owner occupied92.1%
Renter occupied7.9%
Vacant21.0%
Single-family detached84.0%
Large apartment buildings0.0%
Mobile homes1.8%
Median rooms7.0
Avg household size (owned)2.10

Year built

Era%
2020 or later0.0%
2010–20194.4%
2000–200910.8%
1990–199917.6%
1980–198914.0%
1970–19798.3%
1960–19692.8%
1950–19590.9%
1940–19492.8%
1939 or earlier38.4%

Bedrooms

Size% of units
No bedroom (studio)3.3%
1 bedroom5.0%
2 bedrooms18.0%
3 bedrooms40.8%
4 bedrooms30.5%
5+ bedrooms2.4%

Vehicles per household

Vehicles% of households
No vehicle3.3%
1 vehicle31.9%
2 vehicles50.2%
3 or more14.7%

Heating fuel

Fuel type%
Utility gas3.5%
Electricity0.9%
Propane / LP gas36.7%
Fuel oil55.3%
Wood0.7%
Solar0.7%

Households & families

Household typeCount%
Married-couple family24557.0%
Cohabiting couple225.1%
Male householder, no spouse5212.1%
Female householder, no spouse11125.8%
Households with children under 1810223.7%
Households with seniors (65+)24055.8%
Average household size2.10

Marital status

StatusMaleFemale
Never married30.8%8.5%
Married60.4%61.8%
Separated3.8%0.0%
Widowed0.0%16.5%
Divorced5.0%13.2%

Education

Less than 9th grade 1.7%
Some HS, no diploma 2.2%
HS graduate 3.3%
Some college, no degree 11.7%
Associate's degree 10.3%
Bachelor's degree 42.4%
Graduate / professional 28.4%
Metric%
HS diploma or higher96.1%
Bachelor's or higher70.9%

School enrollment (ages 3–17)

TypeCount%
Nursery / preschool127.3%
Kindergarten00.0%
Elementary school6338.4%
High school7747.0%
College / grad school127.3%

Employment

Industry of employment

Professional & management 23.8%
Finance & real estate 21.1%
Manufacturing 13.9%
Retail trade 11.2%
Education & healthcare 8.6%
Construction 7.0%
Arts, food & hospitality 5.1%
Transportation & utilities 4.5%
Wholesale trade 2.9%
Other services 1.1%
Public administration 0.8%

Occupation

Category%
Management, business & arts57.0%
Service5.1%
Sales & office31.8%
Natural resources & construction1.6%
Production & transportation4.5%

Employment type

Type%
Private sector88.0%
Government0.8%
Self-employed11.2%
Unpaid family workers0.0%

Commute

Method%
Drive alone60.4%
Carpool0.0%
Public transit0.8%
Walk1.6%
Work from home34.5%
Other means2.7%
Avg commute (minutes)26.3

Poverty

All people 3.5%
Under 18 years 0.0%
18 and over 4.4%
Married-couple families 3.7%
Female-led households 18.8%

Income support

Source% of households
Social Security52.3%
Retirement income29.8%
Supplemental Security2.3%
Cash public assistance0.0%
Food stamps / SNAP0.9%

Health indicators

Condition%
Obesity28.2%
High blood pressure38.0%
High cholesterol38.6%
Diabetes10.1%
Heart disease7.4%
Stroke3.0%
Asthma9.2%
Arthritis30.3%
Kidney disease3.1%
Pulmonary disease6.3%
Cancer10.4%
Behavior / access%
Smoking10.5%
Binge drinking13.7%
No physical activity16.0%
Less than 7 hrs sleep26.2%
Depression17.3%
Fair or poor health10.5%
Poor mental health10.7%
Poor physical health9.4%
No health insurance6.4%
Visited doctor (checkup)78.9%
Visited dentist78.9%
Cholesterol screening95.9%
Teeth loss7.4%

Veterans & disability

VeteransCount%
Civilian veterans9513.0%
Disability%
Any disability5.6%
Under 180.0%
18–64 years3.2%
65 and over11.6%

Health insurance coverage

Type%
Private insurance92.8%
Public insurance36.1%
No insurance0.3%
Uninsured under 190.0%

Language & origin

Language spoken at home (age 5+)

LanguageCount%
English only88197.5%
Spanish50.6%
Other Indo-European00.0%
Asian & Pacific Islander50.6%
Other languages00.0%

Place of birth & citizenship

OriginCount%
Native born (US)89198.6%
Born in same state85494.5%
Born in different state23025.4%
Foreign born374.1%
Naturalized citizen131.4%
Not a US citizen13100.0%

Ancestry

AncestryCount%
Italian33136.6%
French19421.5%
Arab262.9%
German252.8%
AncestryCount%
Polish252.8%
English91%
Irish50.6%

Technology access

Metric% of households
Computer access47.6%
Internet access97.4%

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

Frequently asked questions about ZIP code 03854

What city is ZIP code 03854 in?

ZIP code 03854 is primarily assigned to New Castle, New Hampshire.

What county is ZIP code 03854 in?

ZIP code 03854 falls within Rockingham County, New Hampshire.

How educated is the population of ZIP code 03854?

71% of residents hold a bachelor's degree or higher — well above the national average of ~33%, reflecting a highly educated population.

Does ZIP code 03854 have an older population?

36% of residents in ZIP code 03854 are 65 or older, above the national average of ~17%.

Is ZIP code 03854 mostly owner-occupied?

92% of occupied units in ZIP code 03854 are owner-occupied, well above the national average.

Does ZIP code 03854 have a large retiree population?

52% of households in ZIP code 03854 receive Social Security income, suggesting a significant retiree or disability population.

What timezone is ZIP code 03854 in?

ZIP code 03854 observes the EST timezone.

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