Erienna township

County:: Grundy County
County Seat:: No
Area (mi²):: 20.816
State:: Illinois

Erienna township is located in Grundy County, Illinois. Erienna township has a 2025 population of 2,511. Erienna township is currently growing at a rate of 0.8% annually and its population has increased by 3.72% since the most recent census, which recorded a population of 2,421 in 2020.

The average household income in Erienna township is $124,148 with a poverty rate of 5.09%.The median age in Erienna township is 50.7 years: 44.7 years for males, and 52.9 years for females.

Demographics

The racial composition of Erienna township includes 93.07% White, and smaller percentages for Asian, Black or African American, other race and multiracial populations.

Population by Race

Race	Population	Percentage (of total)
White	2,512	93.07%
Two or more races	133	4.93%
Asian	38	1.41%
Black or African American	10	0.37%
Other race	6	0.22%

Erienna township Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Erienna township's average per capita income is $73,857. Household income levels show a median of $102,941. The poverty rate stands at 5.09%.

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
Families	$117,292	$139,183
Married Families	$114,180	-
Households	$102,941	$124,148
Non Families	-	$90,946

$73,857

Average Income

$102,941

Median Household Income

5.09%

Poverty Rate