Marion township

County:: Williamson County
County Seat:: No
Area (mi²):: 44.858
State:: Illinois

Marion township is located in Williamson County, Illinois. Marion township has a 2025 population of 3,866. Marion township is currently declining at a rate of -0.1% annually and its population has decreased by -0.92% since the most recent census, which recorded a population of 3,902 in 2020.

The average household income in Marion township is $117,981 with a poverty rate of 2.72%. The median age in Marion township is 52.2 years: 49.3 years for males, and 53.3 years for females.

Demographics

The racial composition of Marion township includes 93.81% White, and smaller percentages for Black or African American, other race, Asian, Native American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Two or more races

Black or African American

Other race

Asian

Native American

Native Hawaiian or Pacific Islander

Race	Population	Percentage (of total)
White	3,655	93.81%
Two or more races	120	3.08%
Black or African American	77	1.98%
Other race	39	1%
Asian	5	0.13%
Native American	0	0%
Native Hawaiian or Pacific Islander	0	0%

Marion township Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Marion township's average per capita income is $46,029. Household income levels show a median of $100,900. The poverty rate stands at 2.72%.

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	$111,944	-
Families	$107,173	$128,225
Households	$100,900	$117,981
Non Families	$72,330	$73,274

$46,029

Average Income

$100,900

Median Household Income

2.72%

Poverty Rate