Oskaloosa township Flag

Oskaloosa township

County:
Clay County
County Seat:
No
Area (mi²):
37.398
State:
Illinois

Oskaloosa township is located in Clay County, Illinois. Oskaloosa township has a 2025 population of 328. Oskaloosa township is currently declining at a rate of -0.91% annually and its population has decreased by -4.09% since the most recent census, which recorded a population of 342 in 2020.

The average household income in Oskaloosa township is $79,405 with a poverty rate of 26.83%.The median age in Oskaloosa township is 30.8 years: 43.1 years for males, and 26.7 years for females.

328
Total Population
9
Density (mi²)
-3 -0.91%
Growth

Oskaloosa township Population

Oskaloosa township Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Oskaloosa township includes 96.14% White, and smaller percentages for and multiracial populations.

Population by Race

Race
Population
Percentage (of total)
White49896.14%
Two or more races203.86%

Oskaloosa township Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Oskaloosa township's average per capita income is $47,950. Household income levels show a median of $77,614. The poverty rate stands at 26.83%.

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$102,188-
Households$77,614$79,405
Families$77,614$77,848
Non Families--

$47,950

Average Income

$77,614

Median Household Income

26.83%

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)