Greenbush township Flag

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 2026 population of 526. Greenbush township is currently growing at a rate of 0.96% annually but its population has decreased by -2.23% since the most recent census, which recorded a population of 538 in 2020.

The median household income in Greenbush township is $94,609 with a poverty rate of 7.82%. The median age in Greenbush township is 59.2 years: 52.8 years for males, and 59.6 years for females. For every 100 females there are 107.5 males.

526
Total Population
15
Density (mi²)
5 0.96%
Growth

Greenbush township Population

Greenbush township Population

Year ↓
Population
Growth
Annual Change
202652650.96%
202552150.97%
2024516-4-0.77%
2023520-3-0.57%
2022523-8-1.51%
2021531-7-1.3%
202053800%
2019511-5-0.97%
2018516-4-0.77%
2017520-3-0.57%
2016523-2-0.38%
2015525-9-1.69%
201453430.56%
201353100%
201253110.19%
2011530-3-0.56%
201052920.38%

Median Age

Overall: 59.2 years
Female: 59.6 years
Male: 52.8 years

Greenbush township Adults

There are 438 adults, (185 of whom are seniors) in Greenbush township.

Sex Ratio

Female: 228 (48.2%)
Male: 245 (51.8%)

Demographics

The racial composition of Greenbush township includes 94.5% White, and smaller percentages for Black or African American and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White44794.5%
Two or more races224.65%
Black or African American40.85%
Race
Population ↓
Percentage (of total)
Two or more races224.65%
Race
Population ↓
Percentage (of total)
White44794.5%
Black or African American40.85%

Greenbush township Marital Status

Economics and Income Statistics

Greenbush township's average per capita income is $61,193. Household income levels show a median of $94,609. The poverty rate stands at 7.82%.

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$127,639-
Households$94,609$156,260
Families$94,453$106,768
Non Families-$368,217

$61,193

Average Income

$94,609

Median Household Income

7.82%

Poverty Rate

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)