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, Native American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Asian

Two or more races

Black or African American

Other race

Native American

Native Hawaiian or Pacific Islander

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%
Native American	0	0%
Native Hawaiian or Pacific Islander	0	0%

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