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, Native American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Asian

Two or more races

Other race

Black or African American

Native American

Native Hawaiian or Pacific Islander

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%
Native American	0	0%
Native Hawaiian or Pacific Islander	0	0%

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