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, Native American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Two or more races

Asian

Black or African American

Other race

Native American

Native Hawaiian or Pacific Islander

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%
Native American	0	0%
Native Hawaiian or Pacific Islander	0	0%

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