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 2026 population of 326. Oskaloosa township is currently declining at a rate of -0.91% annually and its population has decreased by -4.68% since the most recent census, which recorded a population of 342 in 2020.

The median household income in Oskaloosa township is $71,750 with a poverty rate of 32.29%. The median age in Oskaloosa township is 29.8 years: 30 years for males, and 23.8 years for females. For every 100 females there are 101.8 males.

326
Total Population
8.7
Density (mi²)
-3 -0.91%
Growth

Oskaloosa township Population

Oskaloosa township Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
2026326-3-0.91%
2025329-3-0.9%
2024332-3-0.9%
2023335-1-0.3%
2022336-3-0.88%
2021339-3-0.88%
2020342-1-0.29%
201931110.32%
2018310-1-0.32%
2017311-2-0.64%
201631300%
2015313-1-0.32%
2014314-3-0.95%
2013317-4-1.25%
201232110.31%
2011320-2-0.62%
201032200%

Median Age

Overall: 29.8 years
Female: 23.8 years
Male: 30 years

Oskaloosa township Adults

There are 426 adults, (23 of whom are seniors) in Oskaloosa township.

Sex Ratio

Female: 284 (49.6%)
Male: 289 (50.4%)

Demographics

The racial composition of Oskaloosa township includes 95.46% White, and smaller percentages for and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White54795.46%
Two or more races264.54%
Race
Population ↓
Percentage (of total)
White54795.46%
Two or more races264.54%

Oskaloosa township Marital Status

Economics and Income Statistics

Oskaloosa township 's average per capita income is $49,844. Household income levels show a median of $71,750. The poverty rate stands at 32.29%.

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
Households$71,750$99,027
Families$67,917$95,756
Married Families--
Non Families--

$49,844

Average Income

$71,750

Median Household Income

32.29%

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)