Prairie Du Long township

County:: St. Clair County
County Seat:: No
Area (mi²):: 35.456
State:: Illinois

Prairie Du Long township is located in St. Clair County, Illinois. Prairie Du Long township has a 2025 population of 2,515. Prairie Du Long township is currently declining at a rate of -1.06% annually and its population has decreased by -4.95% since the most recent census, which recorded a population of 2,646 in 2020.

The average household income in Prairie Du Long township is $149,568 with a poverty rate of 3.68%. The median age in Prairie Du Long township is 42.3 years: 42 years for males, and 42.7 years for females.

Demographics

The racial composition of Prairie Du Long township includes 95.17% White, and smaller percentages for Black or African American, Two or more races, other race, Native American, Asian, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Black or African American

Two or more races

Other race

Native American

Asian

Native Hawaiian or Pacific Islander

Race	Population	Percentage (of total)
White	2,484	95.17%
Black or African American	62	2.38%
Two or more races	56	2.15%
Other race	8	0.31%
Native American	0	0%
Asian	0	0%
Native Hawaiian or Pacific Islander	0	0%

Prairie Du Long township Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Prairie Du Long township's average per capita income is $73,182. Household income levels show a median of $155,197. The poverty rate stands at 3.68%.

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	$176,280	-
Families	$166,250	$165,299
Households	$155,197	$149,568
Non Families	$36,957	$33,268

$73,182

Average Income

$155,197

Median Household Income

3.68%

Poverty Rate