Ontario township Flag

Ontario township

County:
Knox County
County Seat:
No
Area (mi²):
36.186
State:
Illinois

Ontario township is located in Knox County, Illinois. Ontario township has a 2025 population of 876. Ontario township is currently declining at a rate of -0.68% annually and its population has decreased by -4.26% since the most recent census, which recorded a population of 915 in 2020.

The average household income in Ontario township is $84,739 with a poverty rate of 2.4%.The median age in Ontario township is 33 years: 26.5 years for males, and 34.6 years for females.

876
Total Population
24
Density (mi²)
-6 -0.68%
Growth

Ontario township Population

Ontario township Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Ontario township includes 94.93% White, and smaller percentages for Asian, Two or more races, other race, Black or African American and multiracial populations.

Population by Race

Race
Population
Percentage (of total)
White1,03094.93%
Asian292.67%
Two or more races141.29%
Other race90.83%
Black or African American30.28%

Ontario township Marital Status

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

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Ontario township's average per capita income is $45,329. Household income levels show a median of $69,786. The poverty rate stands at 2.4%.

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$96,667-
Families$88,750$98,552
Households$69,786$84,739
Non Families$35,714$49,943

$45,329

Average Income

$69,786

Median Household Income

2.4%

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)