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 and multiracial populations.

Population by Race

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%

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