Lake St. Louis township

County:: St. Charles County
County Seat:: No
Area (mi²):: 10.778
State:: Missouri

Lake St. Louis township is located in St. Charles County, Missouri. Lake St. Louis township has a 2025 population of 30,038. Lake St. Louis township is currently declining at a rate of 0% annually and its population has decreased by 0% since the most recent census, which recorded a population of 0 in 2020.

The average household income in Lake St. Louis township is $134,247 with a poverty rate of 5.01%. The median age in Lake St. Louis township is 40.6 years: 39.6 years for males, and 42.2 years for females.

Demographics

The racial composition of Lake St. Louis township includes 86.31% White, 5.05% Black or African American, and smaller percentages for Asian, other race, Native American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Two or more races

Black or African American

Asian

Other race

Native American

Native Hawaiian or Pacific Islander

Race	Population	Percentage (of total)
White	25,927	86.31%
Two or more races	1,616	5.38%
Black or African American	1,518	5.05%
Asian	645	2.15%
Other race	320	1.07%
Native American	12	0.04%
Native Hawaiian or Pacific Islander	0	0%

Lake St. Louis township Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Lake St. Louis township's average per capita income is $64,803. Household income levels show a median of $111,863. The poverty rate stands at 5.01%.

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	$154,939	-
Families	$141,385	$158,500
Households	$111,863	$134,247
Non Families	$50,644	$71,916

$64,803

Average Income

$111,863

Median Household Income

5.01%

Poverty Rate