Marlborough

County:: Capitol Planning Region
County Seat:: No
Area (mi²):: 23.351
State:: Connecticut

Marlborough is located in Capitol Planning Region, Connecticut. Marlborough has a 2025 population of 6,130. Marlborough is currently growing at a rate of 0.2% annually and its population has increased by 0.52% since the most recent census, which recorded a population of 6,098 in 2020.

The average household income in Marlborough is $180,209 with a poverty rate of 9.19%.The median age in Marlborough is 42.8 years: 42.4 years for males, and 43.4 years for females.

Demographics

The racial composition of Marlborough includes 84.41% White, 4.77% Asian, and smaller percentages for Black or African American, other race and multiracial populations.

Population by Race

Race	Population	Percentage (of total)
White	5,154	84.41%
Two or more races	471	7.71%
Asian	291	4.77%
Black or African American	122	2%
Other race	68	1.11%

Marlborough Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Marlborough's average per capita income is $81,100. Household income levels show a median of $140,022. The poverty rate stands at 9.19%.

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	$152,308	-
Families	$145,938	$191,810
Households	$140,022	$180,209
Non Families	$57,982	$92,207

$81,100

Average Income

$140,022

Median Household Income

9.19%

Poverty Rate