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 Native American, Asian, Native Hawaiian or Pacific Islander, other race, Two or more races and multiracial populations.

Population by Race

White

Black or African American

Native American

Asian

Native Hawaiian or Pacific Islander

Other race

Two or more races

Race	Population	Percentage (of total)
White	389	90.47%
Black or African American	41	9.53%
Native American	0	0%
Asian	0	0%
Native Hawaiian or Pacific Islander	0	0%
Other race	0	0%
Two or more races	0	0%

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