Marlborough

County:: St. Louis County
County Seat:: No
Area (mi²):: 0.227
State:: Missouri

Marlborough is a village located in St. Louis County, Missouri. Marlborough has a 2025 population of 2,154. Marlborough is currently declining at a rate of -0.6% annually and its population has decreased by -2.89% since the most recent census, which recorded a population of 2,218 in 2020.

The average household income in Marlborough is $58,885 with a poverty rate of 7.35%. The median age in Marlborough is 31.7 years: 30.4 years for males, and 36.7 years for females.

Demographics

The racial composition of Marlborough includes 79.42% White, 6.59% Black or African American, 3.51% Asian, and smaller percentages for Native American, Native Hawaiian or Pacific Islander, other race and multiracial populations.

Population by Race

White

Two or more races

Black or African American

Asian

Native American

Native Hawaiian or Pacific Islander

Other race

Race	Population	Percentage (of total)
White	1,879	79.42%
Two or more races	248	10.48%
Black or African American	156	6.59%
Asian	83	3.51%
Native American	0	0%
Native Hawaiian or Pacific Islander	0	0%
Other race	0	0%

Marlborough Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Marlborough's average per capita income is $36,611. Household income levels show a median of $47,011. The poverty rate stands at 7.35%.

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	$108,898	-
Families	$107,669	$95,250
Households	$47,011	$58,885
Non Families	$35,875	$38,851

$36,611

Average Income

$47,011

Median Household Income

7.35%

Poverty Rate