Cooper township Flag

Cooper township

County:
Sangamon County
County Seat:
No
Area (mi²):
28.536
State:
Illinois

Cooper township is located in Sangamon County, Illinois. Cooper township has a 2026 population of 864. Cooper township is currently declining at a rate of -0.12% annually and its population has decreased by -1.71% since the most recent census, which recorded a population of 879 in 2020.

The median household income in Cooper township is $136,354 with a poverty rate of 0%. The median age in Cooper township is 45.5 years: 39.9 years for males, and 47.5 years for females. For every 100 females there are 125.1 males.

864
Total Population
30
Density (mi²)
-1 -0.12%
Growth

Cooper township Population

Cooper township Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
2026864-1-0.12%
2025865-1-0.12%
2024866-1-0.12%
2023867-2-0.23%
2022869-6-0.69%
2021875-4-0.46%
2020879-1-0.11%
2019866-8-0.92%
2018874-8-0.91%
2017882-5-0.56%
2016887-7-0.78%
2015894-5-0.56%
201489910.11%
201389800%
2012898-1-0.11%
201189960.67%
201089410.11%

Median Age

Overall: 45.5 years
Female: 47.5 years
Male: 39.9 years

Cooper township Adults

There are 621 adults, (130 of whom are seniors) in Cooper township.

Sex Ratio

Female: 339 (44.4%)
Male: 424 (55.6%)

Demographics

The racial composition of Cooper township includes 100% White, and smaller percentages for and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White763100%
Race
Population ↓
Percentage (of total)
White763100%

Cooper township Marital Status

Economics and Income Statistics

Cooper township 's average per capita income is $62,115. Household income levels show a median of $136,354. The poverty rate stands at 0%.

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$155,724-
Families$137,188$137,760
Households$136,354$129,271
Non Families-$90,321

$62,115

Average Income

$136,354

Median Household Income

0%

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)