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 and multiracial populations.

Population by Race

Race	Population	Percentage (of total)
White	916	96.62%
Two or more races	28	2.95%
Asian	4	0.42%

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