Marlborough

County:: Middlesex County
County Seat:: No
Area (mi²):: 20.864
State:: Massachusetts

Marlborough is a city located in Middlesex County, Massachusetts. Marlborough has a 2025 population of 40,839. Marlborough is currently declining at a rate of -0.41% annually and its population has decreased by -2.04% since the most recent census, which recorded a population of 41,689 in 2020.

The average household income in Marlborough is $116,348 with a poverty rate of 9.22%. The median age in Marlborough is 37.2 years: 37.7 years for males, and 36.7 years for females.

Demographics

The racial composition of Marlborough includes 60.87% White, 14.06% other race, 4.9% Asian, 3.65% Black or African American, and smaller percentages for Native American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Two or more races

Other race

Asian

Black or African American

Native American

Native Hawaiian or Pacific Islander

Race	Population	Percentage (of total)
White	25,198	60.87%
Two or more races	6,786	16.39%
Other race	5,820	14.06%
Asian	2,027	4.9%
Black or African American	1,512	3.65%
Native American	55	0.13%
Native Hawaiian or Pacific Islander	0	0%

Marlborough Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Marlborough's average per capita income is $58,147. Household income levels show a median of $95,047. The poverty rate stands at 9.22%.

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	$131,844	-
Families	$116,489	$133,497
Households	$95,047	$116,348
Non Families	$57,634	$81,752

$58,147

Average Income

$95,047

Median Household Income

9.22%

Poverty Rate