South Ottawa township Flag

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 2026 population of 8,288. South Ottawa township is currently declining at a rate of -0.13% annually and its population has decreased by -0.71% since the most recent census, which recorded a population of 8,347 in 2020.

The median household income in South Ottawa township is $84,054 with a poverty rate of 13.49%. The median age in South Ottawa township is 40.8 years: 38.3 years for males, and 41.8 years for females. For every 100 females there are 82.5 males.

8.3K
Total Population
421
Density (mi²)
-11 -0.13%
Growth

South Ottawa township Population

South Ottawa township Population

Year ↓
Population
Growth
Annual Change
20268,288-11-0.13%
20258,299-11-0.13%
20248,31070.08%
20238,303290.35%
20228,274-62-0.74%
20218,336-11-0.13%
20208,347-6-0.07%
20198,003-35-0.44%
20188,038-20-0.25%
20178,058-34-0.42%
20168,092-41-0.5%
20158,133-41-0.5%
20148,174-40-0.49%
20138,214-24-0.29%
20128,238-50-0.6%
20118,288-2-0.02%
20108,329-7-0.08%

Median Age

Overall: 40.8 years
Female: 41.8 years
Male: 38.3 years

South Ottawa township Adults

There are 6,255 adults, (1,744 of whom are seniors) in South Ottawa township.

Sex Ratio

Female: 4,561 (54.8%)
Male: 3,761 (45.2%)

Demographics

The racial composition of South Ottawa township includes 92.63% White, and smaller percentages for other race, Asian, Black or African American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White7,70992.63%
Two or more races4615.54%
Other race831%
Asian420.5%
Black or African American260.31%
Native Hawaiian or Pacific Islander10.01%
Race
Population ↓
Percentage (of total)
White4665.6%
Two or more races2002.4%
Other race831%
Race
Population ↓
Percentage (of total)
White7,24387.03%
Two or more races2613.14%
Asian420.5%
Black or African American260.31%
Native Hawaiian or Pacific Islander10.01%

South Ottawa township Marital Status

Economics and Income Statistics

South Ottawa township's average per capita income is $57,972. Household income levels show a median of $84,054. The poverty rate stands at 13.49%.

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$126,883-
Families$100,738$114,816
Households$84,054$103,846
Non Families$37,000$72,241

$57,972

Average Income

$84,054

Median Household Income

13.49%

Poverty Rate

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)