Merrimack

County:: Hillsborough County
County Seat:: No
Area (mi²):: 32.592
State:: New Hampshire

Merrimack is located in Hillsborough County, New Hampshire. Merrimack has a 2025 population of 29,580. Merrimack is currently growing at a rate of 1.14% annually and its population has increased by 10.23% since the most recent census, which recorded a population of 26,835 in 2020.

The average household income in Merrimack is $147,450 with a poverty rate of 3.44%. The median age in Merrimack is 41.6 years: 40.8 years for males, and 41.9 years for females.

Demographics

The racial composition of Merrimack includes 88.38% White, 4.5% Asian, and smaller percentages for other race, Black or African American, Native Hawaiian or Pacific Islander, Native American and multiracial populations.

Population by Race

White

Asian

Two or more races

Other race

Black or African American

Native Hawaiian or Pacific Islander

Native American

Race	Population	Percentage (of total)
White	24,441	88.38%
Asian	1,245	4.5%
Two or more races	1,221	4.41%
Other race	466	1.68%
Black or African American	278	1.01%
Native Hawaiian or Pacific Islander	5	0.02%
Native American	0	0%

Merrimack Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Merrimack's average per capita income is $72,005. Household income levels show a median of $129,302. The poverty rate stands at 3.44%.

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	$152,320	-
Families	$147,978	$162,941
Households	$129,302	$147,450
Non Families	$81,076	$94,586

$72,005

Average Income

$129,302

Median Household Income

3.44%

Poverty Rate