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 and multiracial populations.

Population by Race

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%

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