Erin township Flag

Erin township

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

Erin township is located in Stephenson County, Illinois. Erin township has a 2026 population of 370. Erin township is currently declining at a rate of -0.54% annually and its population has decreased by -3.14% since the most recent census, which recorded a population of 382 in 2020.

The median household income in Erin township is $71,406 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. For every 100 females there are 72.7 males.

370
Total Population
20
Density (mi²)
-2 -0.54%
Growth

Erin township Population

Erin township Population

Data after 2023 is projected based on recent change

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

White (90.47%)

Black or African American (9.53%)

Race
Population
Percentage (of total)
White38990.47%
Black or African American419.53%

Erin township Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

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

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)