New Castle, NH demographics:
population, income, and more

Total population
515
-12.7% year-over-year change
Median household income
$176,953/yr
-8.6% year-over-year change
Housing units
290
-9.9% year-over-year change

New Castle population

How many people live in New Castle

New Castle is home to 515 residents, according to the most recent Census data. Gender-wise, 51.1% of New Castle locals are male, and 48.7% are female.

Total population
515
-12.7% year-over-year change
Gender ratio
Male
51.1%
263
Female
48.7%
251
Value Percent YoY change
Male 263 51.1% -14.1%
Female 251 48.7% -11.6%
A higher population often means more rental variety and livelier areas. The gender balance—how many men live here compared to women—can reveal a lot about the community and the lifestyles of its residents. Use this info to get a sense of the area's pace and personality.

Age demographics

The median age in New Castle is 63, with the population distributed as follows: about 11.6% are children under 15, then 4.3% are in the 15 to 24 age group. Adults between 25 and 44 make up 15.5% of the population, while another 24.3% fall into the 45 to 64 bracket. Finally, around 44.3% are 65 or older.

Median age
62.8
Age breakdown
Under 15
11.6%
15 to 24
4.3%
25 to 44
15.5%
45 to 64
24.3%
Over 65
44.3%
Value Percent YoY change
Under 15 60 11.6% -14.3%
15 to 24 22 4.3% -56.0%
25 to 44 80 15.5% 17.6%
45 to 64 125 24.3% -33.2%
Over 65 228 44.3% 6.0%
The age composition helps you get insight into who lives in the area. A younger population might mean a more active, fast-paced vibe, while an older one could suggest a quieter, slower lifestyle. If there's a balanced makeup, you’re likely to find a variety of services, housing types, and community spaces that cater to different life stages.

Racial makeup

In New Castle, 95.9% of the population are US-born citizens, while 4.1% have gained naturalized citizenship. There’s also a share of 3.1% that includes residents with two or more races.

Citizenship
U.S.-born citizens
95.9%
Non-U.S.-born citizens
4.1%
Non-citizens
0%
Value Percent YoY change
U.S.-born citizens 494 95.9% -12.7%
Non-U.S.-born citizens 21 4.1% -12.5%
Racial breakdown
White
96.1%
Black or African American
0%
American Indian and Alaska Native
0%
Asian
0.8%
Native Hawaiian and other Pacific Islander
0%
Two or more races
3.1%
Other
0%
Value Percent
White 495 96.1%
Asian 4 0.8%
Two or more races 16 3.1%

Households in New Castle

A peek inside New Castle households

New Castle has 250 households, with an average of 2 members in each. Of these, 67.2% are families, while the remaining 32.8% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
250
-8.4% year-over-year change
Average people per household
2
Non-family households
82
Family households
168
Value Percent YoY change
Non-family households 82 32.8% -5.8%
Family households 168 67.2% -10.2%
The mix between family and non-family households gives a glimpse into daily life. A higher percentage of families might mean more parks and schools, while more non-family setups can mean flexible housing and diverse living styles. For renters, this can signal what kinds of homes are common and can help you figure out if the area matches your lifestyle.

Housing in New Castle

The housing landscape of New Castle

New Castle's housing consists of 290 units, with 94.1% being detached single-family homes ideal for those wanting space. Attached options, including duplexes and townhouses, make up 0.7% and offer a more compact, shared living style.

Housing units
290
-9.9% year-over-year change
Housing types
Value Percent
1 unit, detached 273 94.1%
1 unit, attached 2 0.7%
2 units 11 3.8%
10 to 19 units 4 1.4%
Homes built since 2020
% year-over-year change

The age of buildings in New Castle

In New Castle, the median construction year is 1975. About 32.1% of homes were built before the 1940s, with another 2.8% going up by 1949. Most development happened in the second half of the 20th century.

Construction year breakdown by decade
Value Percent YoY change
Built in 1939 or earlier 93 32.1% -11.4%
Built between 1940 and 1949 8 2.8% 14.3%
Built between 1950 and 1959 11 3.8% 175.0%
Built between 1960 and 1969 17 5.9% -10.5%
Built between 1970 and 1979 30 10.3% -16.7%
Built between 1980 and 1989 40 13.8% -20.0%
Built between 1990 and 1999 50 17.2% 0.0%
Built between 2000 and 2009 27 9.3% -10.0%
Built between 2010 and 2019 14 4.8% -30.0%
As a renter, knowing when homes were built helps you understand the potential condition and design of rental units. Newer builds may have more contemporary layouts, while older homes can offer character or larger lots, depending on the area.

New Castle occupancy rates

Out of the 250 occupied housing units in New Castle, 92.8% are owner-occupied, while 6.8% are lived in by tenants. Meanwhile, 13.8% of all homes on the local market sit vacant.

Occupied housing units
250
-8.4% year-over-year change
Occupancy breakdown
Renter occupied
17
Owner occupied
232
Value Percent YoY
change
Renter occupied 17 6.8% -26.1%
Owner occupied 232 92.8% -7.2%
Unoccupied housing units
13.8%
Unoccupied housing units refer to homes that are currently without residents—whether they're waiting for renters or owners, used seasonally, or simply unclaimed. A higher share of empty homes may mean more housing availability, while a low number can reflect a tighter market with more competition. This, along with the renter-vs.-owner mix, helps paint a clearer picture of what types of housing and services are likely to be available in the area.

New Castle housing costs

Housing costs in New Castle come to a median of $2,232 per month, while tenants specifically pay a median gross rent of $3,501.

Median housing costs per month
$2,232/month
This figure sums up typical monthly housing costs for all households in the area. If you own, it includes mortgage payments in addition to property taxes, insurance and HOA fees. If you rent, it accounts for rent plus extras like utilities. It’s useful for seeing how local living expenses stack up compared to other places.
Median gross rent in New Castle
$3,501/month
Gross rent gives a more complete look at what renters actually pay, including not just base rent, but also utilities and fees. It’s a key number for evaluating rental affordability in your area of interest and understanding how it compares to nearby locations.

Education in New Castle

New Castle education at a glance

About 11.9% of the population in New Castle went to high school, while 13% pursued college studies. Another 6.5% earned an associate degree and 38.5% hold a bachelor’s. Meanwhile, 28.6% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
No high school 7 1.6% -22.2%
High school diploma 53 11.9% 6.0%
College diploma 58 13% 7.4%
Associate degree 29 6.5% -14.7%
Bachelor's degree 172 38.5% -9.5%
Graduate degree 128 28.6% -14.1%
A community’s education mix can offer insights into the local economy and housing market. Higher levels of education often align with more job opportunities and stable incomes, which can increase demand for homes and influence both rent prices and rental availability.

Income in New Castle

How much people earn in New Castle

The average annual household income in New Castle was $256,185 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a -24.3% change from the previous year. At the same time, the median income stood at $176,953, reflecting a -8.6% shift over the same period.

Average household income in New Castle
$256,185/year
-24.3% year-over-year change
Median household income in New Castle
$176,953/year
-8.6% year-over-year change

New Castle income by age

In New Castle, households led by residents aged 25 to 44 — usually in the early to mid stages of their careers — have a median income of $250,001. Those with someone between 45 and 64 in charge, often well established professionally, earn $249,375 overall. Overall, 95.2% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
25 - 44 $250,001 0.0%
45 - 64 $249,375 -0.2%
Over 65 $133,250 37.0%
Above poverty level
479
Below poverty level
24
Value Percent YoY
change
Above poverty level 479 95.2% -14.5%
Below poverty level 24 4.8% 9.1%

Employment in New Castle

Workforce and job types in New Castle

89.2% of the working population are employed in professional or administrative positions, while 10.8% are in hands-on or service-based jobs. Also, 31.4% run their own businesses, 57% are employed by private companies, and 5.4% work in the public sector.

Workforce demographics

White collar
199
Blue collar
24
Value Percent YoY change
White collar 199 89.2% -15.3%
Blue collar 24 10.8% 9.1%
Employer type
Self employees
31.4%
Private companies
57%
Governmental workers
5.4%
Not for profit companies
6.3%
Value Percent YoY change
Self employees 70 31.4% -5.4%
Private companies 127 57% -27.0%
Governmental workers 12 5.4% 500.0%
Not for profit companies 14 6.3% 100.0%

Transportation in New Castle

How people get around in New Castle

Commuting methods vary: 90.4% of residents travel by personal vehicle and 9.6% prefer to walk, while the remaining share relies on public transit or on two wheelers to get from A to B.

Means of transportation
Value Percent YoY change
Car 104 90.4% -26.2%
Walk 11 9.6% 175.0%
Understanding how locals get to work can help you plan your own routine. High car usage might mean you’ll need a vehicle, while strong public transit or walkability could save you the hassle. Commute times also play a big role in quality of life—shorter trips can give you more time for the things you enjoy.

What is the median and average household income in New Castle by zipcode?

Zipcode Population Number of households Median income Average income
03854 827 401 $176,953 $256,186

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FAQs about New Castle demographics 

What is the total population of New Castle?

New Castle has a total population of 515 residents, according to the latest release from the U.S. Census Bureau: the 2019-2023 American Community Survey (ACS) 5-year estimates. This figure changed by -12.7% compared to a year ago.

What is the gender ratio in New Castle?

The gender ratio in New Castle is as follows:
  • 51.1% males (263 residents)
  • 48.7% females (251 residents)

What is the median age in New Castle?

The median age in New Castle is 62.8.

What is the age distribution of the population in New Castle?

The age distribution in New Castle is as follows:
  • Under 15: 11.6% (60 residents)
  • Ages 15-24: 4.3% (22 residents)
  • Ages 25-44: 15.5% (80 residents)
  • Ages 45-64: 24.3% (125 residents)
  • Over 65: 44.3% (228 residents)

What is the racial and ethnic makeup of New Castle?

The racial and ethnic makeup of New Castle is as follows:
  • White: 96.1% (495 residents)
  • Black or African American: 0% ( residents)
  • American Indian and Alaska Native: 0% ( residents)
  • Asian: 0.8% (4 residents)
  • Native Hawaiian and Other Pacific Islander: 0% ( residents)
  • Two or More Races: 3.1% (16 residents)
  • Other: 0% ( residents)

What percentage of the population in New Castle are U.S.-born citizens?

U.S.-born citizens represent 95.9% of the population in New Castle.

How many housing units are there in New Castle?

There are 290 housing units in New Castle, reflecting a -9.9% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

How many households are in New Castle and what is the average household size?

New Castle has a total of 250 households, with an average of 2 people in each.

What is the median household income in New Castle?

New Castle has a median household income of $176,953, representing a -8.6% shift from the previous year, according to the U.S. Census Bureau.

What is the job market overview for New Castle?

Here’s a detailed breakdown of the local job market:

Job types:
  • White-collar workers: 89.2% (199 residents)
  • Blue-collar workers: 10.8% (24 residents)

Places of employment:
  • Self-employed: 31.4% (70 residents)
  • Private companies: 57% (127 residents)
  • Governmental workers: 5.4% (12 residents)
  • Not-for-profit companies: 6.3% (14 residents)

Data source & methodology

The demographic data on this page was sourced from the latest U.S. Census Bureau release—the 2019–2023 American Community Survey (ACS) 5-year estimates.

The information, issued annually, is compiled and published by the Point2Homes Research Team as soon as new data becomes available.

No representation, guarantee, or warranty is made concerning the accuracy or completeness of modified or aggregated information for particular areas.

Page last updated: September 2025