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 and multiracial populations.

Population by Race

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%

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