Frontenac

County:: St. Louis County
County Seat:: No
Area (mi²):: 2.881
State:: Missouri

Frontenac is a city located in St. Louis County, Missouri. Frontenac has a 2025 population of 3,795. Frontenac is currently growing at a rate of 0.9% annually and its population has increased by 4.72% since the most recent census, which recorded a population of 3,624 in 2020.

The average household income in Frontenac is $393,584 with a poverty rate of 2.04%.The median age in Frontenac is 45.8 years: 44.7 years for males, and 47.6 years for females.

Demographics

The racial composition of Frontenac includes 79.86% White, 9.35% Asian, and smaller percentages for Black or African American, other race and multiracial populations.

Population by Race

Race	Population	Percentage (of total)
White	2,930	79.86%
Asian	343	9.35%
Two or more races	297	8.09%
Black or African American	93	2.53%
Other race	6	0.16%

Frontenac Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Frontenac's average per capita income is $133,333. Household income levels show a median of $225,813. The poverty rate stands at 2.04%.

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
Families	$250,001	$452,557
Married Families	$250,001	-
Households	$225,813	$393,584
Non Families	$104,844	$127,217

$133,333

Average Income

$225,813

Median Household Income

2.04%

Poverty Rate