Osco Flag

Osco

County:
Henry County
County Seat:
No
Area (mi²):
36.484
State:
Illinois

Osco is located in Henry County, Illinois. Osco has a 2025 population of 413 . Osco is currently declining at a rate of -0.48% annually and its population has decreased by -3.05% since the most recent census, which recorded a population of 426 in 2020.

The average household income in Osco is $117,492 with a poverty rate of 3.19%. The median age in Osco is 61.5 years: 59.8 years for males, and 61.6 years for females. For every 100 females there are 122.6 males.

413
Total Population
11
Density (mi²)
-2 -0.48%
Growth

Osco Population

Osco Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Osco includes 99.13% White, and smaller percentages for Two or more races and multiracial populations.

Population by Race

White (99.13%)

Two or more races (0.87%)

Race
Population
Percentage (of total)
White34299.13%
Two or more races30.87%

Osco Marital Status

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

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Osco's average per capita income is $54,539. Household income levels show a median of $109,830. The poverty rate stands at 3.19%.

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$155,208-
Families$127,955$133,093
Households$109,830$117,492
Non Families-$66,892

$54,539

Average Income

$109,830

Median Household Income

3.19%

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)