Jefferson township

County:: Stephenson County
County Seat:: No
Area (mi²):: 18.163
State:: Illinois

Jefferson township is located in Stephenson County, Illinois. Jefferson township has a 2025 population of 237. Jefferson township is currently declining at a rate of -0.84% annually and its population has decreased by -4.44% since the most recent census, which recorded a population of 248 in 2020.

The average household income in Jefferson township is $81,292 with a poverty rate of 4.86%. The median age in Jefferson township is 48.1 years: 43.8 years for males, and 52 years for females.

Demographics

The racial composition of Jefferson township includes 100% White, and smaller percentages for Black or African American, 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	185	100%
Black or African American	0	0%
Native American	0	0%
Asian	0	0%
Native Hawaiian or Pacific Islander	0	0%
Other race	0	0%
Two or more races	0	0%

Jefferson township Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Jefferson township's average per capita income is $28,750. Household income levels show a median of $75,556. The poverty rate stands at 4.86%.

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	$76,250	-
Households	$75,556	$81,292
Families	$75,556	$79,555
Non Families	-	-

$28,750

Average Income

$75,556

Median Household Income

4.86%

Poverty Rate