Erin township

County:: Stephenson County
County Seat:: No
Area (mi²):: 18.148
State:: Illinois

Erin township is located in Stephenson County, Illinois. Erin township has a 2025 population of 363. Erin township is currently declining at a rate of -0.82% annually and its population has decreased by -4.47% since the most recent census, which recorded a population of 380 in 2020.

The average household income in Erin township is $75,661 with a poverty rate of 48.37%.The median age in Erin township is 18.9 years: 40.9 years for males, and 17.4 years for females.

Demographics

The racial composition of Erin township includes 90.47% White, 9.53% Black or African American, and smaller percentages for and multiracial populations.

Population by Race

Race	Population	Percentage (of total)
White	389	90.47%
Black or African American	41	9.53%

Erin township Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Erin township's average per capita income is $36,875. Household income levels show a median of $71,406. The poverty rate stands at 48.37%.

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	$81,172	-
Families	$80,781	$80,190
Households	$71,406	$75,661
Non Families	-	$65,622

$36,875

Average Income

$71,406

Median Household Income

48.37%

Poverty Rate