South Rock Island township

County:: Rock Island County
County Seat:: No
Area (mi²):: 6.894
State:: Illinois

South Rock Island township is located in Rock Island County, Illinois. South Rock Island township has a 2025 population of 17,806. South Rock Island township is currently declining at a rate of -0.4% annually and its population has decreased by -3.27% since the most recent census, which recorded a population of 18,408 in 2020.

The average household income in South Rock Island township is $82,810 with a poverty rate of 13.89%.The median age in South Rock Island township is 42.8 years: 40.9 years for males, and 46.4 years for females.

Demographics

The racial composition of South Rock Island township includes 77.48% White, 10.36% Black or African American, 3.63% Asian, and smaller percentages for other race, Native American and multiracial populations.

Population by Race

Race	Population	Percentage (of total)
White	14,103	77.48%
Black or African American	1,886	10.36%
Two or more races	1,124	6.18%
Asian	660	3.63%
Other race	409	2.25%
Native American	19	0.1%

South Rock Island township Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

South Rock Island township's average per capita income is $47,719. Household income levels show a median of $66,789. The poverty rate stands at 13.89%.

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	$100,029	-
Families	$84,006	$111,090
Households	$66,789	$82,810
Non Families	$40,564	$50,415

$47,719

Average Income

$66,789

Median Household Income

13.89%

Poverty Rate