South Ottawa township

County:: LaSalle County
County Seat:: No
Area (mi²):: 19.664
State:: Illinois

South Ottawa township is located in LaSalle County, Illinois. South Ottawa township has a 2025 population of 8,373. South Ottawa township is currently growing at a rate of 0.36% annually and its population has increased by 0.28% since the most recent census, which recorded a population of 8,350 in 2020.

The average household income in South Ottawa township is $100,634 with a poverty rate of 10.06%. The median age in South Ottawa township is 39.8 years: 36.7 years for males, and 42.6 years for females.

Demographics

The racial composition of South Ottawa township includes 96.34% White, and smaller percentages for Two or more races, Asian, other race, Black or African American, Native Hawaiian or Pacific Islander, Native American and multiracial populations.

Population by Race

White

Two or more races

Asian

Other race

Black or African American

Native Hawaiian or Pacific Islander

Native American

Race	Population	Percentage (of total)
White	8,031	96.34%
Two or more races	181	2.17%
Asian	70	0.84%
Other race	38	0.46%
Black or African American	15	0.18%
Native Hawaiian or Pacific Islander	1	0.01%
Native American	0	0%

South Ottawa township Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

South Ottawa township's average per capita income is $55,965. Household income levels show a median of $82,596. The poverty rate stands at 10.06%.

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	$127,656	-
Families	$99,387	$117,757
Households	$82,596	$100,634
Non Families	$43,250	$63,171

$55,965

Average Income

$82,596

Median Household Income

10.06%

Poverty Rate