Greenbush township

County:: Warren County
County Seat:: No
Area (mi²):: 35.526
State:: Illinois

Greenbush township is located in Warren County, Illinois. Greenbush township has a 2025 population of 507. Greenbush township is currently declining at a rate of -0.98% annually and its population has decreased by -5.41% since the most recent census, which recorded a population of 536 in 2020.

The average household income in Greenbush township is $86,588 with a poverty rate of 9.61%.The median age in Greenbush township is 59.4 years: 52.5 years for males, and 62.5 years for females.

Demographics

The racial composition of Greenbush township includes 95.45% White, and smaller percentages for Black or African American and multiracial populations.

Population by Race

Race	Population	Percentage (of total)
White	566	95.45%
Two or more races	23	3.88%
Black or African American	4	0.67%

Greenbush township Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Greenbush township's average per capita income is $34,792. Household income levels show a median of $64,375. The poverty rate stands at 9.61%.

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	$105,703	-
Families	$105,078	$94,400
Households	$64,375	$86,588
Non Families	$41,938	$65,237

$34,792

Average Income

$64,375

Median Household Income

9.61%

Poverty Rate