Northfield

County:: Merrimack County
County Seat:: No
Area (mi²):: 28.506
State:: New Hampshire

Northfield is located in Merrimack County, New Hampshire. Northfield has a 2025 population of 5,105. Northfield is currently growing at a rate of 0.85% annually and its population has increased by 4.7% since the most recent census, which recorded a population of 4,876 in 2020.

The average household income in Northfield is $98,637 with a poverty rate of 8.64%.The median age in Northfield is 43.8 years: 46 years for males, and 43.4 years for females.

Demographics

The racial composition of Northfield includes 92.21% White, and smaller percentages for Native American, Black or African American, Asian and multiracial populations.

Population by Race

Race	Population	Percentage (of total)
White	4,545	92.21%
Two or more races	248	5.03%
Native American	58	1.18%
Black or African American	40	0.81%
Asian	38	0.77%

Northfield Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Northfield's average per capita income is $52,205. Household income levels show a median of $84,552. The poverty rate stands at 8.64%.

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
Married Families	$110,313	-
Families	$104,474	$113,567
Households	$84,552	$98,637
Non Families	$51,314	$53,367

$52,205

Average Income

$84,552

Median Household Income

8.64%

Poverty Rate