Vienna township

County:: Johnson County
County Seat:: No
Area (mi²):: 35.694
State:: Illinois

Vienna township is located in Johnson County, Illinois. Vienna township has a 2025 population of 675. Vienna township is currently growing at a rate of 0.45% annually and its population has increased by 2.27% since the most recent census, which recorded a population of 660 in 2020.

The average household income in Vienna township is $97,125 with a poverty rate of 15.43%.The median age in Vienna township is 45.4 years: 42.4 years for males, and 50.5 years for females.

Demographics

The racial composition of Vienna township includes 92.38% White, and smaller percentages for other race and multiracial populations.

Population by Race

Race	Population	Percentage (of total)
White	509	92.38%
Two or more races	40	7.26%
Other race	2	0.36%

Vienna township Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Vienna township's average per capita income is $57,159. Household income levels show a median of $97,500. The poverty rate stands at 15.43%.

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	$130,515	-
Families	$128,542	$125,771
Households	$97,500	$97,125
Non Families	$40,583	$43,123

$57,159

Average Income

$97,500

Median Household Income

15.43%

Poverty Rate