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

Population by Race

White

Two or more races

Black or African American

Native American

Asian

Native Hawaiian or Pacific Islander

Other race

Race	Population	Percentage (of total)
White	566	95.45%
Two or more races	23	3.88%
Black or African American	4	0.67%
Native American	0	0%
Asian	0	0%
Native Hawaiian or Pacific Islander	0	0%
Other race	0	0%

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