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.

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)
White	1,030	94.93%
Asian	29	2.67%
Two or more races	14	1.29%
Other race	9	0.83%
Black or African American	3	0.28%

Ontario township Marital Status

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