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 and multiracial populations.

Population by Race

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%

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