New Castle

County:: Rockingham County
County Seat:: No
Area (mi²):: 0.809
State:: New Hampshire

New Castle is located in Rockingham County, New Hampshire. New Castle has a 2025 population of 992. New Castle is currently declining at a rate of -0.4% annually and its population has decreased by -0.3% since the most recent census, which recorded a population of 995 in 2020.

The average household income in New Castle is $338,436 with a poverty rate of 3.69%. The median age in New Castle is 56.8 years: 54.4 years for males, and 61.7 years for females.

Demographics

The racial composition of New Castle includes 96.62% White, and smaller percentages for Two or more races, Asian, Black or African American, Native American, Native Hawaiian or Pacific Islander, other race and multiracial populations.

Population by Race

White

Two or more races

Asian

Black or African American

Native American

Native Hawaiian or Pacific Islander

Other race

Race	Population	Percentage (of total)
White	916	96.62%
Two or more races	28	2.95%
Asian	4	0.42%
Black or African American	0	0%
Native American	0	0%
Native Hawaiian or Pacific Islander	0	0%
Other race	0	0%

New Castle Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

New Castle's average per capita income is $158,523. Household income levels show a median of $193,558. The poverty rate stands at 3.69%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.

Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.

Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.

Name	Median	Mean
Families	$250,001	$362,394
Married Families	$250,001	-
Households	$193,558	$338,436
Non Families	$95,260	$286,728

$158,523

Average Income

$193,558

Median Household Income

3.69%

Poverty Rate