Marlborough Flag

Marlborough

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

Marlborough is a city located in Middlesex County, Massachusetts. Marlborough has a 2025 population of 42,290 . Marlborough is currently growing at a rate of 0.29% annually and its population has increased by 1.45% since the most recent census, which recorded a population of 41,685 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. For every 100 females there are 94.2 males.

42.3K
Total Population
2,027
Density (mi²)
121 0.29%
Growth

Marlborough Population

Marlborough Population

Data after 2023 is projected based on recent change

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

White (60.87%)

Two or more races (16.39%)

Other race (14.06%)

Asian (4.9%)

Black or African American (3.65%)

Native American (0.13%)

Race
Population
Percentage (of total)
White25,19860.87%
Two or more races6,78616.39%
Other race5,82014.06%
Asian2,0274.9%
Black or African American1,5123.65%
Native American550.13%

Marlborough Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

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

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)