Caseyville township

County:: St. Clair County
County Seat:: No
Area (mi²):: 34.892
State:: Illinois

Caseyville township is located in St. Clair County, Illinois. Caseyville township has a 2025 population of 34,182. Caseyville township is currently declining at a rate of -0.72% annually and its population has decreased by -3.65% since the most recent census, which recorded a population of 35,477 in 2020.

The average household income in Caseyville township is $113,197 with a poverty rate of 7.24%. The median age in Caseyville township is 38.8 years: 36.7 years for males, and 41.4 years for females.

Demographics

The racial composition of Caseyville township includes 64.34% White, 21.58% Black or African American, and smaller percentages for Asian, other race, Native Hawaiian or Pacific Islander, Native American and multiracial populations.

Population by Race

White

Black or African American

Two or more races

Asian

Other race

Native Hawaiian or Pacific Islander

Native American

Race	Population	Percentage (of total)
White	22,589	64.34%
Black or African American	7,575	21.58%
Two or more races	3,360	9.57%
Asian	870	2.48%
Other race	707	2.01%
Native Hawaiian or Pacific Islander	9	0.03%
Native American	0	0%

Caseyville township Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Caseyville township's average per capita income is $55,954. Household income levels show a median of $85,162. The poverty rate stands at 7.24%.

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	$126,549	-
Families	$111,472	$136,358
Households	$85,162	$113,197
Non Families	$50,437	$63,081

$55,954

Average Income

$85,162

Median Household Income

7.24%

Poverty Rate